Sophos Anti-Virus SIT archive buffer overflow
| sophos-sit-bo (30852) |  High Risk |
Description:
Multiple Sophos Anti-Virus products are vulnerable to a heap-based buffer overflow, caused by improper handling of SIT archives by the virus engine. By sending a specially-crafted SIT archive containing an overly long non-null terminated filename to a vulnerable system, a remote attacker could overflow a buffer and execute arbitrary code on the system, once the file is processed.
*CVSS:
| Base Score: | 10 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 7.4 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
Remedy:
Refer to Sophos Support Knowledgebase Article 21637 for upgrade information. See References.
References:
- Sophos Support Knowledgebase Article 21637: Sophos Anti-Virus: SIT file vulnerability identified.
- ZDI-06-046: Sophos Anti-Virus SIT Archive Parsing Buffer Overflow Vulnerability.
- BID-21563: Sophos Anti-Virus Scanning Engine Veex.DLL Multiple Buffer Overflow Vulnerabilities
- CVE-2006-6335: Multiple buffer overflows in Sophos Anti-Virus scanning engine before 2.40 allow remote attackers to execute arbitrary code via (1) a SIT archive with a long filename that is not null-terminated, which triggers a heap-based overflow in veex.dll due to improper length calculation, and (2) a CPIO archive, with a long filename that is not null-terminated, which triggers a stack-based overflow in veex.dll.
- SA23325: Sophos Anti-Virus SIT/CPIO File Processing Vulnerabilities
- VUPEN/ADV-2006-4919: Sophos AntiVirus Scan Engine CPIO and SIT Files Handling Code Execution Vulnerabilities
Platforms Affected:
- Sophos Sophos Anti-Virus for Linux prior to 5.1.1
- Sophos Sophos Anti-Virus for Windows 2000+ prior to 6.5.0
- Sophos Sophos Anti-Virus for Windows 95/98/Me prior to 4.6.6
- Sophos Sophos Anti-Virus for Windows NT prior to 4.6.6
- Sophos Sophos Anti-Virus virus engine prior to 2.40.2
Reported:
Dec 12, 2006
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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.