ID

VAR-200810-0195

CVE

CVE-2008-3814

TITLE

Cisco Unity Authentication bypass vulnerability

DESCRIPTION

Unspecified vulnerability in Cisco Unity 4.x before 4.2(1)ES161, 5.x before 5.0(1)ES53, and 7.x before 7.0(2)ES8, when using anonymous authentication (aka native Unity authentication), allows remote attackers to bypass authentication and read or modify system configuration parameters by going to a specific link more than once. Cisco Unity is prone to multiple remote vulnerabilities, including: - An information-disclosure vulnerability in the web interface - A denial-of-service vulnerability in the administration interface - A script-injection vulnerability in the web interface - Multiple denial-of-service vulnerabilities in unspecified services These issues are reported in Cisco Unity 7.0; other versions may also be affected. Cisco Unity is prone to an authentication-bypass vulnerability. Exploiting this issue can allow remote attackers to gain unauthorized administrative privileges. This issue is being tracked by Cisco Bug ID CSCsr86943. Versions prior to the following are vulnerable: Cisco Unity 4.0 ES161 for the 4.x release Cisco Unity 5.0 ES53 for the 5.x release Cisco Unity 7.0 ES8 for the 7.x release. When connecting to the specially crafted link for the first time, the user is redirected to the authentication page; however, subsequent attempts no longer verify valid login credentials. ---------------------------------------------------------------------- Do you need accurate and reliable IDS / IPS / AV detection rules? Get in-depth vulnerability details: http://secunia.com/binary_analysis/sample_analysis/ ---------------------------------------------------------------------- TITLE: Cisco Unity Multiple Vulnerabilities SECUNIA ADVISORY ID: SA32187 VERIFY ADVISORY: http://secunia.com/advisories/32187/ CRITICAL: Less critical IMPACT: Security Bypass, Exposure of sensitive information, DoS WHERE: >From local network SOFTWARE: Cisco Unity 4.x http://secunia.com/advisories/product/4386/ Cisco Unity 5.x http://secunia.com/advisories/product/20082/ Cisco Unity 7.x http://secunia.com/advisories/product/20083/ DESCRIPTION: Some vulnerabilities and a security issue have been reported in Cisco Unity, which can be exploited by malicious, local users to disclose potentially sensitive information, and by malicious people to bypass certain security restrictions and cause a DoS (Denial of Service). 2) An error in the session handling in the Cisco Unity server can be exploited to cause a DoS by exhausting all available sessions. 3) A security issue is caused due to insecure permissions on "\CommServer\Reports", which can be exploited by domain users to disclose potentially sensitive information. SOLUTION: Update to version 4.0ES161, 5.0ES53, or 7.0ES8. http://tools.cisco.com/support/downloads/go/Redirect.x?mdfid=274246502 PROVIDED AND/OR DISCOVERED BY: VoIPshield Systems ORIGINAL ADVISORY: Cisco: http://www.cisco.com/warp/public/707/cisco-sa-20081008-unity.shtml http://www.cisco.com/warp/public/707/cisco-sr-20081008-unity.shtml VoIPshield: http://www.voipshield.com/research-details.php?id=126&s=1&threats_details=&threats_category=0&threats_vendor=0&limit=20&sort=discovered&sortby=DESC http://www.voipshield.com/research-details.php?id=128&s=1&threats_details=&threats_category=0&threats_vendor=0&limit=20&sort=discovered&sortby=DESC http://www.voipshield.com/research-details.php?id=130&s=1&threats_details=&threats_category=0&threats_vendor=0&limit=20&sort=discovered&sortby=DESC ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities. Subscribe: http://secunia.com/advisories/secunia_security_advisories/ Definitions: (Criticality, Where etc.) http://secunia.com/advisories/about_secunia_advisories/ Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor. Cisco has released free software updates that address this vulnerability. A workaround that mitigates this vulnerability is available. This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20081008-unity.shtml. Affected Products ================= Cisco Unity is a voice and unified messaging platform. Cisco Unity can be configured to interoperate with Microsoft Exchange or IBM Lotus Domino enabling users to access e-mail, voice, and fax messages from a single inbox. Products Confirmed Not Vulnerable +-------------------------------- No other Cisco products are currently known to be affected by this vulnerability. Anonymous authentication is used when Cisco Unity servers are authenticated to the subscriber instead of Microsoft Windows (Integrated Windows authentication). By default, Cisco Unity is configured so that the administrator uses the Integrated Windows authentication method for authentication. No credentials, personally identifiable, or user information can be obtained through exploitation of this vulnerability. Vulnerability Scoring Details +---------------------------- Cisco has provided scores for the vulnerabilities in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this Security Advisory is done in accordance with CVSS version 2.0. CVSS is a standards-based scoring method that conveys vulnerability severity and helps determine urgency and priority of response. Cisco has provided a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks. Cisco has provided an FAQ to answer additional questions regarding CVSS at: http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html Cisco has also provided a CVSS calculator to help compute the environmental impact for individual networks at http://intellishield.cisco.com/security/alertmanager/cvss. * Authentication bypass w/ anonymous auth (CSCsr86943) CVSS Base Score - 5.8 Access Vector - Network Access Complexity - Medium Authentication - None Confidentiality Impact - Partial Integrity Impact - Partial Availability Impact - None CVSS Temporal Score - 5.2 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed Impact ====== Successful exploitation of the vulnerability may result in an unauthenticated user viewing or altering some configuration parameters of the Cisco Unity server. Software for each releases is available at: 4.2(1) ES release, 5.0(1) ES release, 7.0(2) ES release. When considering software upgrades, also consult http://www.cisco.com/go/psirt and 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. Workarounds =========== Integrated Windows authentication is not affected by this vulnerability and may be used as an alternative to Anonymous Authentication. Details on authentication mechanisms and how to configure them can be found in the Installation Guide for Cisco Unity in the "Setting Up Authentication for the Cisco Unity Administrator" section, located at: http://www.cisco.com/en/US/docs/voice_ip_comm/unity/5x/installation/guide/umexnofo/5xcuigumenofo100.html Obtaining Fixed Software ======================== Cisco has released free software updates that address this vulnerability. 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/products/prod_warranties_item09186a008088e31f.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 with Service Contracts +------------------------------- Customers with contracts 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. Customers using Third Party Support Organizations +------------------------------------------------ Customers whose Cisco products are provided or maintained through prior or existing agreements with third-party support organizations, such as Cisco Partners, authorized resellers, or service providers should contact that support organization for guidance and assistance with the appropriate course of action in regards to this advisory. The effectiveness of any workaround or fix is dependent on specific customer situations, such as product mix, network topology, traffic behavior, and organizational mission. Due to the variety of affected products and releases, customers should consult with their service provider or support organization to ensure any applied workaround or fix is the most appropriate for use in the intended network before it is deployed. Customers without Service Contracts +---------------------------------- Customers who purchase direct from Cisco but do not hold a Cisco service contract, and customers who purchase through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should acquire upgrades by contacting the Cisco Technical Assistance Center (TAC). TAC contacts are as follows. * +1 800 553 2447 (toll free from within North America) * +1 408 526 7209 (toll call from anywhere in the world) * e-mail: tac@cisco.com Customers should have their product serial number available and be prepared to give the URL of this notice as evidence of entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC. Refer to http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml for additional TAC contact information, including localized telephone numbers, and instructions and e-mail addresses for use in various languages. Exploitation and Public Announcements ===================================== This vulnerability was reported to Cisco by VoIPShield Systems. 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's worldwide website at: http://www.cisco.com/warp/public/707/cisco-sa-20081008-unity.shtml In addition to worldwide web posting, a text version of this notice is clear-signed with the Cisco PSIRT PGP key and is posted to the following e-mail and Usenet news recipients. * 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 * comp.dcom.sys.cisco@newsgate.cisco.com Future updates of this advisory, if any, will be placed on Cisco's worldwide website, but may or may not be actively announced on mailing lists or newsgroups. Users concerned about this problem are encouraged to check the above URL for any updates. Revision History ================ +------------------------------------------------------------+ | Revision 1.0 | 2008-Oct-8 | 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 2007-2008 Cisco Systems, Inc. All rights reserved. +-------------------------------------------------------------------- Updated: Oct 08, 2008 Document ID: 108036 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iEYEARECAAYFAkjs3N8ACgkQ86n/Gc8U/uBCMACcC7UX1BUzBt6/RYNhK16p4NKJ e9AAmgIIbr76NlUb50u2oXQjx7ITFWpP =P/iv -----END PGP SIGNATURE-----

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

network

TYPE

authorization issue

CONFIGURATIONS

EXPLOIT AVAILABILITY

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

VoIPshield Systems

SOURCES

LAST UPDATE DATE

2025-04-10T23:09:31.086000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE