Cisco Unified IP Phone telnet server buffer overflow

cisco-unifiedipphone-telnet-bo (40493) The risk level is classified as HighHigh Risk

Description:

Cisco Unified IP Phones running SIP firmware are vulnerable to a buffer overflow, caused by improper bounds checking when the telnet server is enabled and the password parameter is configured. By sending a specially-crafted command to the telnet server, a remote authenticated attacker could overflow a buffer and execute arbitrary code on the phone with elevated privileges.

*CVSS:

Base Score: 6
  Access Vector: Network
  Access Complexity: Medium
  Authentication: Single
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 4.4
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Privileges

Remedy:

Refer to cisco-sa-20080213-phone for patch, upgrade or suggested workaround information. See References.

References:

  • cisco-sa-20080213-phone: Cisco Security Advisory: Cisco Unified IP Phone Overflow and Denial of Service Vulnerabilities.
  • BID-27774: Cisco Unified IP Phone SCCP and SIP Protocol Multiple Remote Vulnerabilities
  • CVE-2008-0529: Buffer overflow in the telnet server in Cisco Unified IP Phone 7906G, 7911G, 7941G, 7961G, 7970G, and 7971G running SCCP firmware might allow remote authenticated users to execute arbitrary code via a crafted command.
  • OSVDB ID: 41564: Cisco Unified IP Phone Telnet Server Overflow
  • SA28935: Cisco Unified IP Phone Multiple Vulnerabilities
  • SECTRACK ID: 1019410: Cisco Unified IP Phone Buffer Overflow in Telnet Server Lets Remote Users Execute Arbitrary Code

Platforms Affected:

  • Cisco Unified IP Phone 7940
  • Cisco Unified IP Phone 7940G
  • Cisco Unified IP Phone 7960
  • Cisco Unified IP Phone 7960G

Reported:

Feb 13, 2008

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email ignore thisxforceignore this@ignore thisus.ignore thisibm.comignore this

Return to the main page

* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

About IBM Security Systems

IBM Security Systems include an extensive portfolio of hardware, software solutions, professional and managed services offerings covering the spectrum of IT and business security risks: people and identity, data and information, application and process, network, server and endpoint and physical infrastructure, empowering clients to innovate and operate their businesses on the most secure infrastructure platforms. Through world-class solutions that address risk across the enterprise, IBM helps organizations build a strong security posture that helps reduce costs, improve service, and manage risk. IBM X-Force(R) Research and Development is one of the most renowned commercial security research and development groups in the world. For more information on how to address today's biggest risks, please visit us at ibm.com/security.