ID

VAR-201202-0169

CVE

CVE-2012-0363

TITLE

plural Cisco Product Web An arbitrary command execution vulnerability in the interface

DESCRIPTION

The web interface on Cisco SRP 520 series devices with firmware before 1.1.26 and SRP 520W-U and 540 series devices with firmware before 1.2.4 allows remote authenticated users to execute arbitrary commands via unspecified vectors, related to a "command injection vulnerability," aka Bug ID CSCtt46871. plural Cisco Product Web The interface contains a vulnerability that allows arbitrary commands to be executed. The problem is Bug ID CSCtt46871 It is a problem.An arbitrary command may be executed by a remotely authenticated user. Cisco Small Business SRP500 series appliances are prone to a remote command-injection vulnerability. Successful exploits will result in the execution of operating system commands in the context of the root user. This may facilitate a complete compromise of an affected computer. This issue is being tracked by Cisco bug ID CSCtt46871. These vulnerabilities could be exploited from the local LAN side of the SRP device by default configuration and the WAN side of the SRP device if remote management is enabled. Remote management is disabled by default. Cisco has released free software updates that address these vulnerabilities. Workarounds that mitigate these vulnerabilities are available. This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120223-srp500 Affected Products ================= Vulnerable Products +------------------ The following Cisco SRP 520 Series models are affected if running firmware prior to version 1.1.26: * Cisco SRP 521W * Cisco SRP 526W * Cisco SRP 527W The following Cisco SRP 520W-U Series models are affected if running firmware prior to version 1.2.4: * Cisco SRP 521W-U * Cisco SRP 526W-U * Cisco SRP 527W-U The following Cisco SRP 540 Series models are affected if running firmware prior to version 1.2.4: * Cisco SRP 541W * Cisco SRP 546W * Cisco SRP 547W To view the firmware version on a device, log in to the Services Ready Platform Configuration Utility and navigate to the Status > Router page to view information about the Cisco SRP Series device and its firmware status. The Firmware Version field indicates the current running version of firmware on the Cisco SRP 500 Series device. Products Confirmed Not Vulnerable +-------------------------------- No other Cisco products are currently known to be affected by these vulnerabilities. Details ======= Cisco SRP 500 Series devices are a flexible, cost-effective, fixed-configuration customer premises equipment (CPE) with embedded intelligence to enable service providers to create, provision, and deploy premium revenue-generating services to small businesses on an as-needed basis. These vulnerabilities could be exploited from the local LAN side of the SRP device by default configuration and the WAN side of the SRP device if remote management is enabled. Remote management is disabled by default. An attacker could exploit this vulnerability by either enticing an administrator to access a crafted link or by performing a man-in-the-middle attack to intercept an authenticated session. An attacker could exploit this vulnerability by first creating a desired configuration file and then uploading it using the unauthenticated URL. An exploit could allow the attacker to alter the configuration of the Cisco SRP 500 Series device. An attacker could exploit this vulnerability by enticing an authenticated user to click on a crafted link or by installing malicious files on the FTP or HTTP server that the administrators of the device may use. An exploit could allow the attacker to install malicious software on the Cisco SRP 500 Series device to launch future attacks. Vulnerability Scoring Details ============================= Cisco has scored the vulnerabilities in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this security advisory is in accordance with CVSS version 2.0. CVSS is a standards-based scoring method that conveys vulnerability severity and helps organizations determine the urgency and priority of a response. Cisco has provided a base and temporal score. Customers can also compute environmental scores that help determine the impact of the vulnerability in their own networks. Cisco has provided additional information regarding CVSS at the following link: http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html Cisco has also provided a CVSS calculator to compute the environmental impact for individual networks at the following link: http://intellishield.cisco.com/security/alertmanager/cvss * CSCtt46871 - Cisco SRP 500 Series Web Interface Command Injection Vulnerability CVSS Base Score - 9.0 Access Vector - Network Access Complexity - Low Authentication - Single Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete CVSS Temporal Score - 7.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed * CSCtw55495 - Cisco SRP 500 Series Unauthenticated Configuration Upload Vulnerability CVSS Base Score - 7.8 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - None Integrity Impact - Complete Availability Impact - None CVSS Temporal Score - 6.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed * CSCtw56009 - Cisco SRP 500 Series Directory Traversal Vulnerability CVSS Base Score - 9.0 Access Vector - Network Access Complexity - Low Authentication - Single Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete CVSS Temporal Score - 7.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed Impact ====== Successful exploitation of these vulnerabilities may result in the execution of arbitrary commands on the device or the uploading of files that may be malicious, which may allow the attacker to alter the device configuration. Software Versions and Fixes =========================== When considering software upgrades, also consult: http://www.cisco.com/go/psirt As well as any subsequent advisories to determine exposure and a complete upgrade solution. In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center (TAC) or your contracted maintenance provider for assistance. +---------------------------------------------------------------+ | Affected Product | First Fixed Release | |-----------------------------+---------------------------------| | Cisco SRP 521W | 1.1.26 | |-----------------------------+---------------------------------| | Cisco SRP 526W | 1.1.26 | |-----------------------------+---------------------------------| | Cisco SRP 527W | 1.1.26 | |-----------------------------+---------------------------------| | Cisco SRP 521W-U | 1.2.4 | |-----------------------------+---------------------------------| | Cisco SRP 526W-U | 1.2.4 | |-----------------------------+---------------------------------| | Cisco SRP 527W-U | 1.2.4 | |-----------------------------+---------------------------------| | Cisco SRP 541W | 1.2.4 | |-----------------------------+---------------------------------| | Cisco SRP 546W | 1.2.4 | |-----------------------------+---------------------------------| | Cisco SRP 547W | 1.2.4 | +---------------------------------------------------------------+ The latest Cisco SRP 500 Series Services Ready Platforms firmware can be downloaded at: http://www.cisco.com/cisco/software/navigator.html?mdfid=282736194&i=rm Workarounds =========== The Cisco SRP 500 Series devices are designed as CPE devices, and only disabling access from the outside network will prevent exploitation, from remote networks. The following mitigations help limit exposure to this vulnerability: * Disable Remote Management Caution: Do not disable remote management if administrators manage devices using the WAN connection. This action will result in a loss of management connectivity to the device. Remote Management is disabled by default. If it is enabled, administrators can disable this feature by choosing Administration > Web Access Management. Change the setting for the Remote Management field to Disabled. Disabling remote management limits exposure because the vulnerability can then be exploited from the inter-LAN network only. * Limit Remote Management Access to Specific IP Addresses If remote management is required, secure the device so that it can be accessed by certain IP addresses only, rather than the default setting of All IP Addresses. After choosing Administration > Web Access Management, an administrator can change the Allowed Remote IP Address setting to ensure that only devices with specified IP addresses can access the device. Obtaining Fixed Software ======================== Cisco has released free software updates that address these vulnerabilities. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment. Customers may only install and expect support for the feature sets they have purchased. By installing, downloading, accessing or otherwise using such software upgrades, customers agree to be bound by the terms of Cisco's software license terms found at: http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html Or as otherwise set forth at Cisco.com Downloads at: http://www.cisco.com/public/sw-center/sw-usingswc.shtml Do not contact psirt@cisco.com or security-alert@cisco.com for software upgrades. Customers should obtain upgraded software through their regular update channels. For most customers, this means that upgrades should be obtained through the Software Center on Cisco's worldwide website at: http://www.cisco.com If the information is not clear, please contact the Cisco Small Business Support Center or your contracted maintenance provider for assistance. Small Business Support Center contacts are as follows. +1 866 606 1866 (toll free from within North America) +1 408 418 1866 (toll call from anywhere in the world) Customers should have their product serial number available. For additional support contact information, including localized telephone numbers, and instructions and e-mail addresses for use in various languages refer to: http://www.cisco.com/en/US/support/tsd_cisco_small_business_support_center_contacts.html Customers with Service Contracts +------------------------------- See the Obtaining Fixed Software section of this advisory. Customers Using Third-Party Support Organizations +------------------------------------------------ See the Obtaining Fixed Software section of this advisory. Customers Without Service Contracts +---------------------------------- See the Obtaining Fixed Software section of this advisory. Exploitation and Public Announcements ===================================== The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory. These vulnerabilities were reported to Cisco by Michal Sajdak of Securitum, Poland. Status of This Notice: Final ============================ THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. A stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors. Distribution ============ This advisory is posted on Cisco Security Intelligence Operations at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120223-srp500 Additionally, a text version of this advisory is clear signed with the Cisco PSIRT PGP key and circulated among the following e-mail addresses: * cust-security-announce@cisco.com * first-bulletins@lists.first.org * bugtraq@securityfocus.com * vulnwatch@vulnwatch.org * cisco@spot.colorado.edu * cisco-nsp@puck.nether.net * full-disclosure@lists.grok.org.uk Future updates of this advisory, if any, will reside on Cisco.com but may not be announced on mailing lists. Users can monitor this advisory's URL for any updates. Revision History ================ +-------------------------------------------------------------------+ | Revision 1.0 | 2012-02-23 | Initial Public Release | +-------------------------------------------------------------------+ Cisco Security Procedures ========================= Complete information on reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco, is available on Cisco's worldwide website at: http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at: http://www.cisco.com/go/psirt +-------------------------------------------------------------------- Copyright 2010-2012 Cisco Systems, Inc. All rights reserved. +-------------------------------------------------------------------- -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org iF4EAREIAAYFAk9FbNgACgkQQXnnBKKRMNAfIAD/WMs9GOrkuwOl4hChGWKdtysj zrvZf97YvaI0rShqp0gA/33sBJSMX3KcSYgYZS5RgYG5ZLFV0Cc2zXURzQRzxY85 =WMsW -----END PGP SIGNATURE----- _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

code injection

CONFIGURATIONS

EXPLOIT AVAILABILITY

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Michal Sajdak of Securitum

SOURCES

LAST UPDATE DATE

2025-04-11T23:02:02.974000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE