Sophos Anti-Virus multiple archive security bypass
| sophos-archive-security-bypass (36502) |  Low Risk |
Description:
Sophos Anti-Virus could allow a remote attacker to bypass security restrictions, caused by a vulnerability when viewing specially-crafted CAB, LZH, or RAR archive files with a malicious header. By persuading a victim to open a specially-crafted archive file, an attacker could exploit this vulnerability to bypass scan protection.
*CVSS:
| Base Score: | 4.3 |
| Access Vector: | Network |
| Access Complexity: | Medium |
| Authentication: | None |
| Confidentiality Impact: | None |
| Integrity Impact: | Partial |
| Availability Impact: | None |
| Temporal Score: | 3.2 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Bypass Security
Remedy:
Upgrade to the latest version of Sophos Anti-Virus (2.49.0 or later), available from the Sophos Web site. See References.
References:
- Sophos Web site: Advisory: Sophos Anti-Virus evasion vulnerabilities reported.
- BID-25574: Sophos Anti-Virus CAB, LZH, and RAR File Scan Evasion Vulnerability
- CVE-2007-4787: The virus detection engine in Sophos Anti-Virus before 2.49.0 does not properly process malformed (1) CAB, (2) LZH, and (3) RAR files with modified headers, which might allow remote attackers to bypass malware detection.
- SA26726: Sophos Anti-Virus Multiple Archive Detection Bypass
- VUPEN/ADV-2007-3078: Sophos Anti-Virus Multiple Archive Handling Detection Bypass Vulnerabilities
Platforms Affected:
- Sophos Sophos Anti-Virus virus engine prior to 2.49.0
Reported:
Sep 04, 2007
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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.