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.
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
Remedy:
Refer to cisco-sa-20080213-phone for patch, upgrade or suggested workaround information. See References.
Consequences:
Gain Access
References:
- cisco-sa-20080213-phone, Cisco Security Advisory: Cisco Unified IP Phone Overflow and Denial of Service Vulnerabilities at http://www.cisco.com/warp/public/707/cisco-sa-20080213-phone.shtml.
- 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.
- FrSIRT/ADV-2008-0543: Cisco Unified IP Phones Overflow and Denial of Service Vulnerabilities
- OSVDB ID: 8137: Dropbear SSH Server DSS Verification Issue
- SA12153: Dropbear SSH Server DSS Verification Vulnerability
- SA28935: Cisco Unified IP Phone Multiple Vulnerabilities
Reported:
Feb 13, 2008
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