Cisco Unified IP Phone SIP proxy buffer overflow
| cisco-unifiedipphone-sipproxy-bo (40498) |  High Risk |
Description:
Cisco Unified IP Phones running SIP firmware are vulnerable to a heap-based buffer overflow, caused by improper bounds checking. By sending a specially-crafted challenge/response message, a remote attacker controlling the SIP proxy could overflow a buffer and execute arbitrary code on the phone.
*CVSS:
| Base Score: | 6.8 |
| Access Vector: | Network |
| Access Complexity: | Medium |
| Authentication: | None |
| Confidentiality Impact: | Partial |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 5 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
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-2008-0531: Heap-based buffer overflow in Cisco Unified IP Phone 7940, 7940G, 7960, and 7960G running SIP firmware might allow remote SIP servers to execute arbitrary code via a crafted challenge/response message.
- SA28935: Cisco Unified IP Phone Multiple Vulnerabilities
- SECTRACK ID: 1019411: Cisco Unified IP Phone Heap Overflow in Parsing SIP Proxy Responses Lets Remote Users Execute Arbitrary Code
- VUPEN/ADV-2008-0543: Cisco Unified IP Phones Overflow and Denial of Service Vulnerabilities
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 xforce@iss.net
* 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.