VARIoT IoT vulnerabilities database
| VAR-201808-0033 | CVE-2016-4397 | Vulnerability in JP1/Cm2/Network Node Manager i |
CVSS V2: 4.6 CVSS V3: 7.8 Severity: HIGH |
A local code execution security vulnerability was identified in HP Network Node Manager i (NNMi) v10.00, v10.10 and v10.20 Software. A vulnerability (CVE-2016-4397) exists in JP1/Cm2/Network Node Manager i. An attacker may have unspecified impact.
A local attacker can leverage this issue to execute arbitrary code in the context of affected application. Failed attempts may lead to denial-of-service conditions. -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Note: the current version of the following document is available here:
https://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c05325811
SUPPORT COMMUNICATION - SECURITY BULLETIN
Document ID: c05325811
Version: 1
HPSBGN03657 rev.1 - HPE Network Node Manager i (NNMi) Software, Local Code
Execution
NOTICE: The information in this Security Bulletin should be acted upon as
soon as possible.
HISTORY
Version:1 (rev.1) - 4 November 2016 Initial release
Third Party Security Patches: Third party security patches that are to be
installed on systems running Hewlett Packard Enterprise (HPE) software
products should be applied in accordance with the customer's patch management
policy.
Support: For issues about implementing the recommendations of this Security
Bulletin, contact normal HPE Services support channel. For other issues about
the content of this Security Bulletin, send e-mail to security-alert@hpe.com.
Report: To report a potential security vulnerability for any HPE supported
product:
Web form: https://www.hpe.com/info/report-security-vulnerability
Email: security-alert@hpe.com
Subscribe: To initiate a subscription to receive future HPE Security Bulletin
alerts via Email: http://www.hpe.com/support/Subscriber_Choice
Security Bulletin Archive: A list of recently released Security Bulletins is
available here: http://www.hpe.com/support/Security_Bulletin_Archive
Software Product Category: The Software Product Category is represented in
the title by the two characters following HPSB.
3C = 3COM
3P = 3rd Party Software
GN = HPE General Software
HF = HPE Hardware and Firmware
MU = Multi-Platform Software
NS = NonStop Servers
OV = OpenVMS
PV = ProCurve
ST = Storage Software
UX = HP-UX
Copyright 2016 Hewlett Packard Enterprise
Hewlett Packard Enterprise shall not be liable for technical or editorial
errors or omissions contained herein. The information provided is provided
"as is" without warranty of any kind. To the extent permitted by law, neither
HP or its affiliates, subcontractors or suppliers will be liable for
incidental,special or consequential damages including downtime cost; lost
profits; damages relating to the procurement of substitute products or
services; or damages for loss of data, or software restoration. The
information in this document is subject to change without notice. Hewlett
Packard Enterprise and the names of Hewlett Packard Enterprise products
referenced herein are trademarks of Hewlett Packard Enterprise in the United
States and other countries. Other product and company names mentioned herein
may be trademarks of their respective owners.
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| VAR-201702-0427 | CVE-2016-5815 | Schneider Electric of IONXXXX Series and PM5XXX Vulnerability to Access Device Management Portal in Series Power Meter |
CVSS V2: 7.5 CVSS V3: 9.8 Severity: CRITICAL |
An issue was discovered on Schneider Electric IONXXXX series power meters ION73XX series, ION75XX series, ION76XX series, ION8650 series, ION8800 series, and PM5XXX series. No authentication is configured by default. An unauthorized user can access the device management portal and make configuration changes. Schneider Electric ION Power Meter is an electrical energy meter.
A security bypass vulnerability exists in Schneider Electric ION Series. An attacker could use this vulnerability to bypass certain security mechanisms to perform unauthorized operations
| VAR-201611-0416 | No CVE | Shanghai Bingfeng Computer Network Technology Co., Ltd. online behavior management system has arbitrary command execution vulnerability |
CVSS V2: 7.5 CVSS V3: - Severity: HIGH |
Shanghai Bingfeng Computer Network Technology Co., Ltd. online behavior management system is a network auditing equipment. Shanghai Bingfeng Computer Network Technology Co., Ltd. online behavior management system has arbitrary command execution vulnerabilities, and attackers can exploit the vulnerability to obtain server permissions
| VAR-201702-0071 | CVE-2016-8362 | plural Moxa OnCell Vulnerability in downloading log files in series products |
CVSS V2: 4.0 CVSS V3: 6.5 Severity: MEDIUM |
An issue was discovered in Moxa OnCell OnCellG3470A-LTE, AWK-1131A/3131A/4131A Series, AWK-3191 Series, AWK-5232/6232 Series, AWK-1121/1127 Series, WAC-1001 V2 Series, WAC-2004 Series, AWK-3121-M12-RTG Series, AWK-3131-M12-RCC Series, AWK-5232-M12-RCC Series, TAP-6226 Series, AWK-3121/4121 Series, AWK-3131/4131 Series, and AWK-5222/6222 Series. Any user is able to download log files by accessing a specific URL. MOXAOnCell is an industrial grade IP gateway product. The MoxaOnCellSeries product verification bypass vulnerability allows an attacker to bypass the authentication mechanism and gain unauthorized access. Moxa OnCell Series products are prone to an authentication-bypass vulnerability and an OS command execution vulnerability. Moxa OnCellG3470A-LTE etc
| VAR-201702-0072 | CVE-2016-8363 | plural Moxa OnCell Any on the server in series products OS Command execution vulnerability |
CVSS V2: 7.5 CVSS V3: 10.0 Severity: CRITICAL |
An issue was discovered in Moxa OnCell OnCellG3470A-LTE, AWK-1131A/3131A/4131A Series, AWK-3191 Series, AWK-5232/6232 Series, AWK-1121/1127 Series, WAC-1001 V2 Series, WAC-2004 Series, AWK-3121-M12-RTG Series, AWK-3131-M12-RCC Series, AWK-5232-M12-RCC Series, TAP-6226 Series, AWK-3121/4121 Series, AWK-3131/4131 Series, and AWK-5222/6222 Series. User is able to execute arbitrary OS commands on the server. MOXAOnCell is an industrial grade IP gateway product. Moxa OnCellG3470A-LTE etc
| VAR-201702-0352 | CVE-2016-4764 | plural Apple Used in products WebKit Vulnerable to arbitrary code execution |
CVSS V2: 6.8 CVSS V3: 8.8 Severity: HIGH |
An issue was discovered in certain Apple products. iOS before 10 is affected. Safari before 10 is affected. iTunes before 12.5.1 is affected. tvOS before 10 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site. WebKit is prone to multiple memory-corruption vulnerabilities.
An attacker may exploit these issues by enticing victims into viewing a malicious web page. WebKit is a set of open source web browser engines jointly developed by companies such as KDE, Apple (Apple), and Google (Google), and is currently used by browsers such as Apple Safari and Google Chrome. A memory corruption vulnerability exists in WebKit. ==========================================================================
Ubuntu Security Notice USN-3166-1
January 10, 2017
webkit2gtk vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 LTS
Summary:
Several security issues were fixed in WebKitGTK+.
Software Description:
- webkit2gtk: JavaScript engine library from WebKitGTK+ - GObject introspection
Details:
A large number of security issues were discovered in the WebKitGTK+ Web and
JavaScript engines.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 LTS:
libjavascriptcoregtk-4.0-18 2.14.2-0ubuntu0.16.04.1
libwebkit2gtk-4.0-37 2.14.2-0ubuntu0.16.04.1
This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart any applications
that use WebKitGTK+, such as Epiphany, to make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-3166-1
CVE-2016-4613, CVE-2016-4657, CVE-2016-4666, CVE-2016-4707,
CVE-2016-4728, CVE-2016-4733, CVE-2016-4734, CVE-2016-4735,
CVE-2016-4759, CVE-2016-4760, CVE-2016-4761, CVE-2016-4762,
CVE-2016-4764, CVE-2016-4765, CVE-2016-4767, CVE-2016-4768,
CVE-2016-4769, CVE-2016-7578
Package Information:
https://launchpad.net/ubuntu/+source/webkit2gtk/2.14.2-0ubuntu0.16.04.1
| VAR-201611-0163 | CVE-2016-6452 | Cisco Prime Home of Web Base of GUI Vulnerabilities that bypass authentication |
CVSS V2: 10.0 CVSS V3: 9.8 Severity: CRITICAL |
A vulnerability in the web-based graphical user interface (GUI) of Cisco Prime Home could allow an unauthenticated, remote attacker to bypass authentication. The attacker could be granted full administrator privileges. Cisco Prime Home versions 5.1.1.6 and earlier and 5.2.2.2 and earlier have been confirmed to be vulnerable. Cisco Prime Home versions 6.0 and later are not vulnerable. More Information: CSCvb71732. Known Affected Releases: 5.0 5.0(1) 5.0(1.1) 5.0(1.2) 5.0(2) 5.15.1(0) 5.1(1) 5.1(1.3) 5.1(1.4) 5.1(1.5) 5.1(1.6) 5.1(2) 5.1(2.1) 5.1(2.3) 5.25.2(0.1) 5.2(1.0) 5.2(1.2) 5.2(2.0) 5.2(2.1) 5.2(2.2). Vendors have confirmed this vulnerability Bug ID CSCvb71732 It is released as.Authentication may be bypassed by a third party.
An attacker can exploit this issue to bypass the authentication mechanism and perform unauthorized actions. This may lead to further attacks.
This issue is tracked by Cisco Bug ID CSCvb71732. The solution provides visibility into a unified view of connected devices in the home, reduces home network operating costs and improves user experience, among other features. An attacker could exploit this vulnerability by sending a specially crafted HTTP request to gain full administrator privileges
| VAR-201611-0388 | CVE-2016-6457 | Cisco ACI for Nexus 9000 Series platform Reef Service disruption in switches (DoS) Vulnerabilities |
CVSS V2: 6.1 CVSS V3: 6.5 Severity: MEDIUM |
A vulnerability in the Cisco Nexus 9000 Series Platform Leaf Switches for Application Centric Infrastructure (ACI) could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on the affected device. This vulnerability affects Cisco Nexus 9000 Series Leaf Switches (TOR) - ACI Mode and Cisco Application Policy Infrastructure Controller (APIC). More Information: CSCuy93241. Known Affected Releases: 11.2(2x) 11.2(3x) 11.3(1x) 11.3(2x) 12.0(1x). Known Fixed Releases: 11.2(2i) 11.2(2j) 11.2(3f) 11.2(3g) 11.2(3h) 11.2(3l) 11.3(0.236) 11.3(1j) 11.3(2i) 11.3(2j) 12.0(1r). Vendors have confirmed this vulnerability Bug ID CSCuy93241 It is released as.Denial of service by an attacker on an adjacent network (DoS) There is a possibility of being put into a state.
An attacker can exploit this issue to cause a denial-of-service condition.
This issue is being tracked by Cisco Bug IDCSCuy93241
| VAR-201611-0167 | CVE-2016-6458 | Cisco E Email Security For appliance AsyncOS Vulnerability that bypasses the set content filter in the content filtering function |
CVSS V2: 5.0 CVSS V3: 7.5 Severity: HIGH |
A vulnerability in the content filtering functionality of Cisco AsyncOS Software for Cisco Email Security Appliances could allow an unauthenticated, remote attacker to bypass content filters configured on an affected device. Email that should have been filtered could instead be forwarded by the device. This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for Cisco Email Security Appliances, both virtual and hardware appliances, if the software is configured to use a content filter for email attachments that are protected or encrypted. More Information: CSCva52546. Known Affected Releases: 10.0.0-125 9.7.1-066. CiscoAsyncOS Remote Security Bypass Vulnerability. An attacker could exploit the vulnerability to bypass certain security mechanisms and perform unauthorized operations.
This issue is being tracked by Cisco Bug ID CSCva52546
| VAR-201706-0084 | CVE-2016-7807 | Access restriction bypass vulnerability in WFS-SR01 |
CVSS V2: 5.0 CVSS V3: 7.5 Severity: HIGH |
I-O DATA DEVICE WFS-SR01 firmware version 1.10 and earlier allow remote attackers to bypass access restriction to access data on storage devices inserted into the product via unspecified vectors. WFS-SR01 provided by I-O DATA DEVICE, INC. is a portable storage device which provides wireless LAN router function. WFS-SR01 contains access restriction bypass vulnerability in "Pocket Router Function". I-O DATA DEVICE, INC. reported this vulnerability to JPCERT/CC to notify users of its solution through JVN. JPCERT/CC and I-O DATA DEVICE, INC.
Attackers can exploit these issues to execute remote command or to bypass certain security restrictions and perform unauthorized actions.
WFS-SR01 firmware version 1.10 and prior versions are vulnerable
| VAR-201611-0158 | CVE-2016-6441 |
Cisco ASR 900 Series router IOS XE of TL1 Vulnerabilities that cause code reloads
Related entries in the VARIoT exploits database: VAR-E-201611-0430 |
CVSS V2: 10.0 CVSS V3: 9.8 Severity: CRITICAL |
A vulnerability in the Transaction Language 1 (TL1) code of Cisco ASR 900 Series routers could allow an unauthenticated, remote attacker to cause a reload of, or remotely execute code on, the affected system. This vulnerability affects Cisco ASR 900 Series Aggregation Services Routers (ASR902, ASR903, and ASR907) that are running the following releases of Cisco IOS XE Software: 3.17.0S 3.17.1S 3.17.2S 3.18.0S 3.18.1S. More Information: CSCuy15175. Known Affected Releases: 15.6(1)S 15.6(2)S. Known Fixed Releases: 15.6(1)S2.12 15.6(1.17)S0.41 15.6(1.17)SP 15.6(2)SP 16.4(0.183) 16.5(0.10). The Cisco ASR900 Series is a modular aggregation service router.
This issue being tracked by Cisco Bug ID CSCuy15175
| VAR-201611-0160 | CVE-2016-6448 | Cisco Meeting Server of Session Description Protocol An arbitrary code execution vulnerability in the parser |
CVSS V2: 7.5 CVSS V3: 9.8 Severity: CRITICAL |
A vulnerability in the Session Description Protocol (SDP) parser of Cisco Meeting Server could allow an unauthenticated, remote attacker to execute arbitrary code on an affected system. This vulnerability affects the following products: Cisco Meeting Server releases prior to Release 2.0.3, Acano Server releases 1.9.x prior to Release 1.9.5, Acano Server releases 1.8.x prior to Release 1.8.17. More Information: CSCva76004. Known Affected Releases: 1.8.x 1.92.0. Vendors have confirmed this vulnerability Bug ID CSCva76004 It is released as.A third party may execute arbitrary code. Cisco Meeting Server is prone to a buffer overflow vulnerability.
An attacker can exploit this issue to execute arbitrary code within the context of affected application. Failed exploit attempts will result in denial-of-service conditions.
This issue is being tracked by Cisco bug ID CSCva76004
| VAR-201611-0159 | CVE-2016-6447 | Cisco Meeting Server and Meeting Vulnerability to execute arbitrary code in application |
CVSS V2: 7.5 CVSS V3: 9.8 Severity: CRITICAL |
A vulnerability in Cisco Meeting Server and Meeting App could allow an unauthenticated, remote attacker to execute arbitrary code on an affected system. This vulnerability affects the following products: Cisco Meeting Server releases prior to 2.0.1, Acano Server releases prior to 1.8.16 and prior to 1.9.3, Cisco Meeting App releases prior to 1.9.8, Acano Meeting Apps releases prior to 1.8.35. More Information: CSCva75942 CSCvb67878. Known Affected Releases: 1.81.92.0. Vendors have confirmed this vulnerability Bug ID CSCva75942 and CSCvb67878 It is released as.A third party may execute arbitrary code.
This issue being tracked by Cisco Bug ID CSCva75942 and CSCvb67878. Cisco Meeting Server (formerly known as Acano Conferencing Server, CMS) and so on are products of Cisco (Cisco). CMS is a set of conference server software including audio and video; Cisco Meeting App is a set of applications for creating, joining and running conference video systems. A buffer overflow vulnerability exists in several Cisco products
| VAR-201611-0168 | CVE-2016-6459 | Cisco TelePresence TC Or CE The software runs TelePresence Local shell command injection vulnerability in endpoint |
CVSS V2: 4.9 CVSS V3: 5.5 Severity: MEDIUM |
Cisco TelePresence endpoints running either CE or TC software contain a vulnerability that could allow an authenticated, local attacker to execute a local shell command injection. More Information: CSCvb25010. Known Affected Releases: 8.1.x. Known Fixed Releases: 6.3.4 7.3.7 8.2.2 8.3.0. Vendors have confirmed this vulnerability Bug ID CSCvb25010 It is released as.A local attacker could insert local shell commands. Cisco TelePresence Endpoints is prone to a local command-injection vulnerability.
A local attacker can exploit this issue to execute arbitrary commands with elevated privileges. Successful exploits may compromise the affected device.
This issue is being tracked by Cisco Bug ID CSCvb25010
| VAR-201706-0083 | CVE-2016-7806 | Command injection vulnerability in WFS-SR01 |
CVSS V2: 10.0 CVSS V3: 9.8 Severity: CRITICAL |
I-O DATA DEVICE WFS-SR01 firmware version 1.10 and earlier allow remote attackers to execute arbitrary OS commands via unspecified vectors. WFS-SR01 provided by I-O DATA DEVICE, INC. is a portable storage device which provides wireless LAN router function. WFS-SR01 contains command injection vulnerability in "Pocket Router Function". I-O DATA DEVICE, INC. reported this vulnerability to JPCERT/CC to notify users of its solution through JVN. JPCERT/CC and I-O DATA DEVICE, INC.
WFS-SR01 firmware version 1.10 and prior versions are vulnerable
| VAR-201702-0079 | CVE-2016-8374 | plural Schneider Electric Magelis Service disruption in products (DoS) Vulnerabilities |
CVSS V2: 7.8 CVSS V3: 7.5 Severity: HIGH |
An issue was discovered in Schneider Electric Magelis HMI Magelis GTO Advanced Optimum Panels, all versions, Magelis GTU Universal Panel, all versions, Magelis STO5xx and STU Small panels, all versions, Magelis XBT GH Advanced Hand-held Panels, all versions, Magelis XBT GK Advanced Touchscreen Panels with Keyboard, all versions, Magelis XBT GT Advanced Touchscreen Panels, all versions, and Magelis XBT GTW Advanced Open Touchscreen Panels (Windows XPe). An attacker may be able to disrupt a targeted web server, resulting in a denial of service because of UNCONTROLLED RESOURCE CONSUMPTION. A denial of service vulnerability exists in several Schneider Electric products
| VAR-201702-0074 | CVE-2016-8367 | plural Schneider Electric Magelis Target of product Web Vulnerability to open multiple connections to the server |
CVSS V2: 5.0 CVSS V3: 5.3 Severity: MEDIUM |
An issue was discovered in Schneider Electric Magelis HMI Magelis GTO Advanced Optimum Panels, all versions, Magelis GTU Universal Panel, all versions, Magelis STO5xx and STU Small panels, all versions, Magelis XBT GH Advanced Hand-held Panels, all versions, Magelis XBT GK Advanced Touchscreen Panels with Keyboard, all versions, Magelis XBT GT Advanced Touchscreen Panels, all versions, and Magelis XBT GTW Advanced Open Touchscreen Panels (Windows XPe). An attacker can open multiple connections to a targeted web server and keep connections open preventing new connections from being made, rendering the web server unavailable during an attack. There are resource consumption vulnerabilities in several Schneider Electric products. An attacker exploiting a vulnerability can lead to resource exhaustion and restart, causing a denial of service attack.
Attackers can exploit this issue to cause excessive resource consumption, resulting in a denial-of-service condition
| VAR-201611-0166 | CVE-2016-6455 | Cisco ASR 5500 Series Routers Denial of Service Vulnerability |
CVSS V2: 5.0 CVSS V3: 7.5 Severity: HIGH |
A vulnerability in the Slowpath of StarOS for Cisco ASR 5500 Series routers with Data Processing Card 2 (DPC2) could allow an unauthenticated, remote attacker to cause a subset of the subscriber sessions to be disconnected, resulting in a partial denial of service (DoS) condition. This vulnerability affects Cisco ASR 5500 devices with Data Processing Card 2 (DPC2) running StarOS 18.0 or later. More Information: CSCvb12081. Known Affected Releases: 18.7.4 19.5.0 20.0.2.64048 20.2.3 21.0.0. Known Fixed Releases: 18.7.4 18.7.4.65030 18.8.M0.65044 19.5.0 19.5.0.65092 19.5.M0.65023 19.5.M0.65050 20.2.3 20.2.3.64982 20.2.3.65017 20.2.a4.65307 20.3.M0.64984 20.3.M0.65029 20.3.M0.65037 20.3.M0.65071 20.3.T0.64985 20.3.T0.65031 20.3.T0.65043 20.3.T0.65067 21.0.0 21.0.0.65256 21.0.M0.64922 21.0.M0.64983 21.0.M0.65140 21.0.V0.65150 21.1.A0.64932 21.1.A0.64987 21.1.A0.65145 21.1.PP0.65270 21.1.R0.65130 21.1.R0.65135 21.1.R0.65154 21.1.VC0.65203 21.2.A0.65147. Vendors have confirmed this vulnerability Bug ID CSCvb12081 It is released as.Part of a subscriber session by a third party (subset) Resulting in service disruption (DoS) There is a possibility of being put into a state. The Cisco ASR5000 Series is a carrier-grade platform for deploying high-demand 3G networks and migrating to Long Term Evolution (LTE). After installing the DPC2 on the Cisco ASR5500 series router, there is a security hole in StarOSSlowpath. Cisco StarOS for ASR 5500 Series routers are prone to a remote denial-of-service vulnerability.
An attacker can exploit this issue to cause a denial-of-service condition.
This issue is being tracked by Cisco Bug ID CSCvb12081. StarOS is a set of Linux operating systems used in it
| VAR-201611-0348 | CVE-2016-8864 | ISC BIND of DNAME Vulnerability in processing response packets containing records |
CVSS V2: 5.0 CVSS V3: 7.5 Severity: HIGH |
named in ISC BIND 9.x before 9.9.9-P4, 9.10.x before 9.10.4-P4, and 9.11.x before 9.11.0-P1 allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a DNAME record in the answer section of a response to a recursive query, related to db.c and resolver.c. ISC BIND Is DNAME There is a problem with the response packet containing the record, db.c Or resolver.c so assertion failture ( Violation of representation ) And the result named May end abnormally. (resolver.c so assertion failure If this happens "INSIST((valoptions & 0x0002U) != 0) failed" , db.c so assertion failure If this happens "REQUIRE(targetp != ((void *)0) && *targetp == ((void *)0)) failed" Is displayed. ) According to the developer, 2016 Year 11 Moon 2 No attacks have been observed as of the day, but queries that cause crashes are mentioned on the public mailing list. Supplementary information : CWE Vulnerability type by CWE-19: Data Handling ( Data processing ) Has been identified. https://cwe.mitre.org/data/definitions/19.htmlService disruption by a remote third party (DoS) An attack may be carried out. ISC BIND is prone to a remote denial-of-service vulnerability.
Attackers can exploit this issue to crash the application, resulting in a denial-of-service condition.
ISC BIND versions 9.0.x through 9.8.x, 9.9.0 through 9.9.9-P3, 9.9.3-S1 through 9.9.9-S5, 9.10.0 through 9.10.4-P3 and 9.11.0 are vulnerable.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
=====================================================================
Red Hat Security Advisory
Synopsis: Important: bind security update
Advisory ID: RHSA-2016:2871-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-2871.html
Issue date: 2016-12-06
CVE Names: CVE-2016-8864
=====================================================================
1. Summary:
An update for bind is now available for Red Hat Enterprise Linux 6.2
Advanced Update Support, Red Hat Enterprise Linux 6.4 Advanced Update
Support, Red Hat Enterprise Linux 6.5 Advanced Update Support, Red Hat
Enterprise Linux 6.5 Telco Extended Update Support, Red Hat Enterprise
Linux 6.6 Advanced Update Support, Red Hat Enterprise Linux 6.6 Telco
Extended Update Support, and Red Hat Enterprise Linux 6.7 Extended Update
Support.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux HPC Node EUS (v. 6.7) - x86_64
Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7) - x86_64
Red Hat Enterprise Linux Server AUS (v. 6.2) - x86_64
Red Hat Enterprise Linux Server AUS (v. 6.4) - x86_64
Red Hat Enterprise Linux Server AUS (v. 6.5) - x86_64
Red Hat Enterprise Linux Server AUS (v. 6.6) - x86_64
Red Hat Enterprise Linux Server EUS (v. 6.7) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 6.2) - x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 6.4) - x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 6.5) - x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 6.6) - x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 6.7) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional TUS (v. 6.5) - x86_64
Red Hat Enterprise Linux Server Optional TUS (v. 6.6) - x86_64
Red Hat Enterprise Linux Server TUS (v. 6.5) - x86_64
Red Hat Enterprise Linux Server TUS (v. 6.6) - x86_64
3. Description:
The Berkeley Internet Name Domain (BIND) is an implementation of the Domain
Name System (DNS) protocols. BIND includes a DNS server (named); a resolver
library (routines for applications to use when interfacing with DNS); and
tools for verifying that the DNS server is operating correctly.
Security Fix(es):
* A denial of service flaw was found in the way BIND handled responses
containing a DNAME answer. (CVE-2016-8864)
Red Hat would like to thank ISC for reporting this issue. Upstream
acknowledges Tony Finch (University of Cambridge) and Marco Davids (SIDN
Labs) as the original reporters.
4. Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
After installing the update, the BIND daemon (named) will be restarted
automatically.
5. Bugs fixed (https://bugzilla.redhat.com/):
1389652 - CVE-2016-8864 bind: assertion failure while handling responses containing a DNAME answer
6. Package List:
Red Hat Enterprise Linux HPC Node EUS (v. 6.7):
Source:
bind-9.8.2-0.37.rc1.el6_7.9.src.rpm
x86_64:
bind-debuginfo-9.8.2-0.37.rc1.el6_7.9.i686.rpm
bind-debuginfo-9.8.2-0.37.rc1.el6_7.9.x86_64.rpm
bind-libs-9.8.2-0.37.rc1.el6_7.9.i686.rpm
bind-libs-9.8.2-0.37.rc1.el6_7.9.x86_64.rpm
bind-utils-9.8.2-0.37.rc1.el6_7.9.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7):
x86_64:
bind-9.8.2-0.37.rc1.el6_7.9.x86_64.rpm
bind-chroot-9.8.2-0.37.rc1.el6_7.9.x86_64.rpm
bind-debuginfo-9.8.2-0.37.rc1.el6_7.9.i686.rpm
bind-debuginfo-9.8.2-0.37.rc1.el6_7.9.x86_64.rpm
bind-devel-9.8.2-0.37.rc1.el6_7.9.i686.rpm
bind-devel-9.8.2-0.37.rc1.el6_7.9.x86_64.rpm
bind-sdb-9.8.2-0.37.rc1.el6_7.9.x86_64.rpm
Red Hat Enterprise Linux Server AUS (v. 6.2):
Source:
bind-9.7.3-8.P3.el6_2.6.src.rpm
x86_64:
bind-9.7.3-8.P3.el6_2.6.x86_64.rpm
bind-chroot-9.7.3-8.P3.el6_2.6.x86_64.rpm
bind-debuginfo-9.7.3-8.P3.el6_2.6.i686.rpm
bind-debuginfo-9.7.3-8.P3.el6_2.6.x86_64.rpm
bind-libs-9.7.3-8.P3.el6_2.6.i686.rpm
bind-libs-9.7.3-8.P3.el6_2.6.x86_64.rpm
bind-utils-9.7.3-8.P3.el6_2.6.x86_64.rpm
Red Hat Enterprise Linux Server AUS (v. 6.4):
Source:
bind-9.8.2-0.17.rc1.el6_4.10.src.rpm
x86_64:
bind-9.8.2-0.17.rc1.el6_4.10.x86_64.rpm
bind-chroot-9.8.2-0.17.rc1.el6_4.10.x86_64.rpm
bind-debuginfo-9.8.2-0.17.rc1.el6_4.10.i686.rpm
bind-debuginfo-9.8.2-0.17.rc1.el6_4.10.x86_64.rpm
bind-libs-9.8.2-0.17.rc1.el6_4.10.i686.rpm
bind-libs-9.8.2-0.17.rc1.el6_4.10.x86_64.rpm
bind-utils-9.8.2-0.17.rc1.el6_4.10.x86_64.rpm
Red Hat Enterprise Linux Server AUS (v. 6.5):
Source:
bind-9.8.2-0.23.rc1.el6_5.5.src.rpm
x86_64:
bind-9.8.2-0.23.rc1.el6_5.5.x86_64.rpm
bind-chroot-9.8.2-0.23.rc1.el6_5.5.x86_64.rpm
bind-debuginfo-9.8.2-0.23.rc1.el6_5.5.i686.rpm
bind-debuginfo-9.8.2-0.23.rc1.el6_5.5.x86_64.rpm
bind-libs-9.8.2-0.23.rc1.el6_5.5.i686.rpm
bind-libs-9.8.2-0.23.rc1.el6_5.5.x86_64.rpm
bind-utils-9.8.2-0.23.rc1.el6_5.5.x86_64.rpm
Red Hat Enterprise Linux Server TUS (v. 6.5):
Source:
bind-9.8.2-0.23.rc1.el6_5.5.src.rpm
x86_64:
bind-9.8.2-0.23.rc1.el6_5.5.x86_64.rpm
bind-chroot-9.8.2-0.23.rc1.el6_5.5.x86_64.rpm
bind-debuginfo-9.8.2-0.23.rc1.el6_5.5.i686.rpm
bind-debuginfo-9.8.2-0.23.rc1.el6_5.5.x86_64.rpm
bind-libs-9.8.2-0.23.rc1.el6_5.5.i686.rpm
bind-libs-9.8.2-0.23.rc1.el6_5.5.x86_64.rpm
bind-utils-9.8.2-0.23.rc1.el6_5.5.x86_64.rpm
Red Hat Enterprise Linux Server AUS (v. 6.6):
Source:
bind-9.8.2-0.30.rc1.el6_6.7.src.rpm
x86_64:
bind-9.8.2-0.30.rc1.el6_6.7.x86_64.rpm
bind-chroot-9.8.2-0.30.rc1.el6_6.7.x86_64.rpm
bind-debuginfo-9.8.2-0.30.rc1.el6_6.7.i686.rpm
bind-debuginfo-9.8.2-0.30.rc1.el6_6.7.x86_64.rpm
bind-libs-9.8.2-0.30.rc1.el6_6.7.i686.rpm
bind-libs-9.8.2-0.30.rc1.el6_6.7.x86_64.rpm
bind-utils-9.8.2-0.30.rc1.el6_6.7.x86_64.rpm
Red Hat Enterprise Linux Server TUS (v. 6.6):
Source:
bind-9.8.2-0.30.rc1.el6_6.7.src.rpm
x86_64:
bind-9.8.2-0.30.rc1.el6_6.7.x86_64.rpm
bind-chroot-9.8.2-0.30.rc1.el6_6.7.x86_64.rpm
bind-debuginfo-9.8.2-0.30.rc1.el6_6.7.i686.rpm
bind-debuginfo-9.8.2-0.30.rc1.el6_6.7.x86_64.rpm
bind-libs-9.8.2-0.30.rc1.el6_6.7.i686.rpm
bind-libs-9.8.2-0.30.rc1.el6_6.7.x86_64.rpm
bind-utils-9.8.2-0.30.rc1.el6_6.7.x86_64.rpm
Red Hat Enterprise Linux Server EUS (v. 6.7):
Source:
bind-9.8.2-0.37.rc1.el6_7.9.src.rpm
i386:
bind-9.8.2-0.37.rc1.el6_7.9.i686.rpm
bind-chroot-9.8.2-0.37.rc1.el6_7.9.i686.rpm
bind-debuginfo-9.8.2-0.37.rc1.el6_7.9.i686.rpm
bind-libs-9.8.2-0.37.rc1.el6_7.9.i686.rpm
bind-utils-9.8.2-0.37.rc1.el6_7.9.i686.rpm
ppc64:
bind-9.8.2-0.37.rc1.el6_7.9.ppc64.rpm
bind-chroot-9.8.2-0.37.rc1.el6_7.9.ppc64.rpm
bind-debuginfo-9.8.2-0.37.rc1.el6_7.9.ppc.rpm
bind-debuginfo-9.8.2-0.37.rc1.el6_7.9.ppc64.rpm
bind-libs-9.8.2-0.37.rc1.el6_7.9.ppc.rpm
bind-libs-9.8.2-0.37.rc1.el6_7.9.ppc64.rpm
bind-utils-9.8.2-0.37.rc1.el6_7.9.ppc64.rpm
s390x:
bind-9.8.2-0.37.rc1.el6_7.9.s390x.rpm
bind-chroot-9.8.2-0.37.rc1.el6_7.9.s390x.rpm
bind-debuginfo-9.8.2-0.37.rc1.el6_7.9.s390.rpm
bind-debuginfo-9.8.2-0.37.rc1.el6_7.9.s390x.rpm
bind-libs-9.8.2-0.37.rc1.el6_7.9.s390.rpm
bind-libs-9.8.2-0.37.rc1.el6_7.9.s390x.rpm
bind-utils-9.8.2-0.37.rc1.el6_7.9.s390x.rpm
x86_64:
bind-9.8.2-0.37.rc1.el6_7.9.x86_64.rpm
bind-chroot-9.8.2-0.37.rc1.el6_7.9.x86_64.rpm
bind-debuginfo-9.8.2-0.37.rc1.el6_7.9.i686.rpm
bind-debuginfo-9.8.2-0.37.rc1.el6_7.9.x86_64.rpm
bind-libs-9.8.2-0.37.rc1.el6_7.9.i686.rpm
bind-libs-9.8.2-0.37.rc1.el6_7.9.x86_64.rpm
bind-utils-9.8.2-0.37.rc1.el6_7.9.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 6.2):
Source:
bind-9.7.3-8.P3.el6_2.6.src.rpm
x86_64:
bind-debuginfo-9.7.3-8.P3.el6_2.6.i686.rpm
bind-debuginfo-9.7.3-8.P3.el6_2.6.x86_64.rpm
bind-devel-9.7.3-8.P3.el6_2.6.i686.rpm
bind-devel-9.7.3-8.P3.el6_2.6.x86_64.rpm
bind-sdb-9.7.3-8.P3.el6_2.6.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 6.4):
Source:
bind-9.8.2-0.17.rc1.el6_4.10.src.rpm
x86_64:
bind-debuginfo-9.8.2-0.17.rc1.el6_4.10.i686.rpm
bind-debuginfo-9.8.2-0.17.rc1.el6_4.10.x86_64.rpm
bind-devel-9.8.2-0.17.rc1.el6_4.10.i686.rpm
bind-devel-9.8.2-0.17.rc1.el6_4.10.x86_64.rpm
bind-sdb-9.8.2-0.17.rc1.el6_4.10.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 6.5):
Source:
bind-9.8.2-0.23.rc1.el6_5.5.src.rpm
x86_64:
bind-debuginfo-9.8.2-0.23.rc1.el6_5.5.i686.rpm
bind-debuginfo-9.8.2-0.23.rc1.el6_5.5.x86_64.rpm
bind-devel-9.8.2-0.23.rc1.el6_5.5.i686.rpm
bind-devel-9.8.2-0.23.rc1.el6_5.5.x86_64.rpm
bind-sdb-9.8.2-0.23.rc1.el6_5.5.x86_64.rpm
Red Hat Enterprise Linux Server Optional TUS (v. 6.5):
Source:
bind-9.8.2-0.23.rc1.el6_5.5.src.rpm
x86_64:
bind-debuginfo-9.8.2-0.23.rc1.el6_5.5.i686.rpm
bind-debuginfo-9.8.2-0.23.rc1.el6_5.5.x86_64.rpm
bind-devel-9.8.2-0.23.rc1.el6_5.5.i686.rpm
bind-devel-9.8.2-0.23.rc1.el6_5.5.x86_64.rpm
bind-sdb-9.8.2-0.23.rc1.el6_5.5.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 6.6):
x86_64:
bind-debuginfo-9.8.2-0.30.rc1.el6_6.7.i686.rpm
bind-debuginfo-9.8.2-0.30.rc1.el6_6.7.x86_64.rpm
bind-devel-9.8.2-0.30.rc1.el6_6.7.i686.rpm
bind-devel-9.8.2-0.30.rc1.el6_6.7.x86_64.rpm
bind-sdb-9.8.2-0.30.rc1.el6_6.7.x86_64.rpm
Red Hat Enterprise Linux Server Optional TUS (v. 6.6):
x86_64:
bind-debuginfo-9.8.2-0.30.rc1.el6_6.7.i686.rpm
bind-debuginfo-9.8.2-0.30.rc1.el6_6.7.x86_64.rpm
bind-devel-9.8.2-0.30.rc1.el6_6.7.i686.rpm
bind-devel-9.8.2-0.30.rc1.el6_6.7.x86_64.rpm
bind-sdb-9.8.2-0.30.rc1.el6_6.7.x86_64.rpm
Red Hat Enterprise Linux Server Optional EUS (v. 6.7):
i386:
bind-debuginfo-9.8.2-0.37.rc1.el6_7.9.i686.rpm
bind-devel-9.8.2-0.37.rc1.el6_7.9.i686.rpm
bind-sdb-9.8.2-0.37.rc1.el6_7.9.i686.rpm
ppc64:
bind-debuginfo-9.8.2-0.37.rc1.el6_7.9.ppc.rpm
bind-debuginfo-9.8.2-0.37.rc1.el6_7.9.ppc64.rpm
bind-devel-9.8.2-0.37.rc1.el6_7.9.ppc.rpm
bind-devel-9.8.2-0.37.rc1.el6_7.9.ppc64.rpm
bind-sdb-9.8.2-0.37.rc1.el6_7.9.ppc64.rpm
s390x:
bind-debuginfo-9.8.2-0.37.rc1.el6_7.9.s390.rpm
bind-debuginfo-9.8.2-0.37.rc1.el6_7.9.s390x.rpm
bind-devel-9.8.2-0.37.rc1.el6_7.9.s390.rpm
bind-devel-9.8.2-0.37.rc1.el6_7.9.s390x.rpm
bind-sdb-9.8.2-0.37.rc1.el6_7.9.s390x.rpm
x86_64:
bind-debuginfo-9.8.2-0.37.rc1.el6_7.9.i686.rpm
bind-debuginfo-9.8.2-0.37.rc1.el6_7.9.x86_64.rpm
bind-devel-9.8.2-0.37.rc1.el6_7.9.i686.rpm
bind-devel-9.8.2-0.37.rc1.el6_7.9.x86_64.rpm
bind-sdb-9.8.2-0.37.rc1.el6_7.9.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2016-8864
https://access.redhat.com/security/updates/classification/#important
https://kb.isc.org/article/AA-01434
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2016 Red Hat, Inc.
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Version: GnuPG v1
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--
RHSA-announce mailing list
RHSA-announce@redhat.com
https://www.redhat.com/mailman/listinfo/rhsa-announce
.
===========================================================================
Ubuntu Security Notice USN-3119-1
November 01, 2016
bind9 vulnerability
===========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary:
Bind could be made to crash if it received specially crafted network
traffic.
Software Description:
- bind9: Internet Domain Name Server
Details:
Tony Finch and Marco Davids discovered that Bind incorrectly handled
certain responses containing a DNAME answer.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.10:
bind9 1:9.10.3.dfsg.P4-10.1ubuntu1.1
Ubuntu 16.04 LTS:
bind9 1:9.10.3.dfsg.P4-8ubuntu1.2
Ubuntu 14.04 LTS:
bind9 1:9.9.5.dfsg-3ubuntu0.10
Ubuntu 12.04 LTS:
bind9 1:9.8.1.dfsg.P1-4ubuntu0.19
In general, a standard system update will make all the necessary changes.
Bug Fix(es):
* ICANN is planning to perform a Root Zone DNSSEC Key Signing Key (KSK)
rollover during October 2017. Maintaining an up-to-date KSK is essential
for ensuring that validating DNS resolvers continue to function following
the rollover. (BZ#1459648)
4.
Release Date: 2017-01-27
Last Updated: 2017-01-27
Potential Security Impact: Remote: Denial of Service (DoS)
Source: Hewlett Packard Enterprise, Product Security Response Team
VULNERABILITY SUMMARY
Potential security vulnerabilities have been identified in the HP-UX BIND service running named. These vulnerabilities could be exploited remotely to create multiple Denial of Services (DoS).
- HP-UX BIND B.11.31 - BIND 9.9.4 prior to C.9.9.4.9.0
BACKGROUND
CVSS Base Metrics
=================
Reference, CVSS V3 Score/Vector, CVSS V2 Score/Vector
CVE-2016-8864
7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0 (AV:N/AC:L/Au:N/C:N/I:N/A:P)
CVE-2016-9131
7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0 (AV:N/AC:L/Au:N/C:N/I:N/A:P)
CVE-2016-9444
7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0 (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Information on CVSS is documented in
HPE Customer Notice HPSN-2008-002 here:
https://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c01345499
RESOLUTION
HPE has provided the following software updates to resolve the vulnerability in the HP-UX BIND service running named.
* BIND 9.9.4 for HP-UX Release B.11.31 (PA and IA)
* Depot: HP_UX_11.31_HPUX-NameServer_C.9.9.4.9.0_HP-UX_B.11.31_IA_PA.depot
Note: The depot files can be found here:
<https://h20392.www2.hpe.com/portal/swdepot/displayProductInfo.do?productNumb
r=BIND>
MANUAL ACTIONS: Yes - Update
Download and install the software update
PRODUCT SPECIFIC INFORMATION
HP-UX Software Assistant: HP-UX Software Assistant is an enhanced application
that replaces HP-UX Security Patch Check. It analyzes all Security Bulletins
issued by HPE and lists recommended actions that may apply to a specific HP-UX
system. It can also download patches and create a depot automatically.
For more information see:
<https://h20392.www2.hpe.com/portal/swdepot/displayProductInfo.do?productNumb
r=B6834AA>
The following text is for use by the HP-UX Software Assistant.
AFFECTED VERSIONS
HP-UX B.11.31 IA/PA
===================
NameService.BIND-AUX
NameService.BIND-RUN
action: install C.9.9.4.9.0 or subsequent
HISTORY
Version:1 (rev.1) - 28 January 2017 Initial release
Third Party Security Patches: Third party security patches that are to be installed on systems running Hewlett Packard Enterprise (HPE) software products should be applied in accordance with the customer's patch management policy.
Support: For issues about implementing the recommendations of this Security Bulletin, contact normal HPE Services support channel. For other issues about the content of this Security Bulletin, send e-mail to security-alert@hpe.com.
Report: To report a potential security vulnerability for any HPE supported
product:
Web form: https://www.hpe.com/info/report-security-vulnerability
Email: security-alert@hpe.com
Subscribe: To initiate a subscription to receive future HPE Security Bulletin alerts via Email: http://www.hpe.com/support/Subscriber_Choice
Security Bulletin Archive: A list of recently released Security Bulletins is available here: http://www.hpe.com/support/Security_Bulletin_Archive
Software Product Category: The Software Product Category is represented in the title by the two characters following HPSB.
3C = 3COM
3P = 3rd Party Software
GN = HPE General Software
HF = HPE Hardware and Firmware
MU = Multi-Platform Software
NS = NonStop Servers
OV = OpenVMS
PV = ProCurve
ST = Storage Software
UX = HP-UX
Copyright 2016 Hewlett Packard Enterprise
Hewlett Packard Enterprise shall not be liable for technical or editorial errors or omissions contained herein. The information provided is provided "as is" without warranty of any kind. To the extent permitted by law, neither HP or its affiliates, subcontractors or suppliers will be liable for incidental,special or consequential damages including downtime cost; lost profits; damages relating to the procurement of substitute products or services; or damages for loss of data, or software restoration. The information in this document is subject to change without notice. Hewlett Packard Enterprise and the names of Hewlett Packard Enterprise products referenced herein are trademarks of Hewlett Packard Enterprise in the United States and other countries. Other product and company names mentioned herein may be trademarks of their respective owners.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All BIND users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dns/bind-9.10.4_p4"
References
==========
[ 1 ] CVE-2016-8864
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-8864
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201701-26
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.
License
=======
Copyright 2017 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
. 6) - i386, x86_64
3
| VAR-201702-0073 | CVE-2016-8364 | IBHsoftec S7-SoftPLC CPX43 Heap Buffer Overflow Vulnerability |
CVSS V2: 10.0 CVSS V3: 9.8 Severity: CRITICAL |
An issue was discovered in IBHsoftec S7-SoftPLC prior to 4.12b. Object memory can read a network packet that is larger than the space that is available, a Heap-based Buffer Overflow. This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of IBHsoftec SoftPLC. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of packets by the service listening on TCP port 502. The issue lies in the failure to properly validate the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute arbitrary code under the context of Administrator. IBHsoftec S7-SoftPLC is a software program for the replacement of hardware PLCs by IBHsoftec, Germany. Failed exploit attempts will likely cause denial-of-service conditions