Cisco Unified IP Phone SSH server buffer overflow
| cisco-unifiedipphone-ssh-bo (40490) |  High Risk |
Description:
Cisco Unified IP Phones running SCCP firmware are vulnerable to a buffer overflow in the internal SSH server. By sending a specially-crafted packet to TCP port 22, a remote attacker could overflow a buffer and execute arbitrary code on the phone or cause the phone to reboot.
*CVSS:
| Base Score: | 9 |
| Access Vector: | Network |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | Partial |
| Integrity Impact: | Partial |
| Availability Impact: | Complete |
| Temporal Score: | 6.7 |
| 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-10803: Dropbear SSH Server Digital Signature Standard Unspecified Authentication Vulnerability
- CVE-2004-2486: The DSS verification code in Dropbear SSH Server before 0.43 frees uninitialized variables, which might allow remote attackers to gain access.
- OSVDB ID: 8137: Dropbear SSH Server DSS Verification Issue
- SA12153: Dropbear SSH Server DSS Verification Vulnerability
- SA28935: Cisco Unified IP Phone Multiple Vulnerabilities
- VUPEN/ADV-2008-0543: Cisco Unified IP Phones Overflow and Denial of Service Vulnerabilities
Platforms Affected:
- Cisco Unified IP Phone 7906G
- Cisco Unified IP Phone 7911G
- Cisco Unified IP Phone 7941G
- Cisco Unified IP Phone 7961G
- Cisco Unified IP Phone 7970G
- Cisco Unified IP Phone 7971G
Reported:
Feb 13, 2008
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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.