ClamAV libclamav MEW PE buffer overflow
| clamav-libclamav-mewpe-bo (39119) |  High Risk |
Description:
Clam AntiVirus (ClamAV) is vulnerable to a heap-based buffer overflow, caused by an integer overflow error in the cli_scanpe function when parsing PE files packed with the MEW packer. By persuading a victim to open a specially-crafted PE file, a remote attacker could overflow a buffer and execute arbitrary code on the system with elevated privileges or cause the application to crash.
Platforms Affected:
- Apple, Mac OS X Server 10.5.2
- Clam Anti-Virus, ClamAV 0.91.2
- Debian, Debian Linux 4.0
- Gentoo, Linux
- Mandriva, Corporate Server 3.0
- Mandriva, Corporate Server 3.0 X86_64
- Mandriva, Corporate Server 4.0
- Mandriva, Corporate Server 4.0 X86_64
- Mandriva, Linux 2007 X86_64
- Mandriva, Linux 2007
- Mandriva, Linux 2007.1
- Mandriva, Linux 2007.1 X86_64
- Mandriva, Linux 2008.0 X86_64
- Mandriva, Linux 2008.0
Remedy:
Upgrade to the latest version of Clam AntiVirus (0.92 or later), available from the Clam AntiVirus Web site. See References.
For Mac OS X:
Apply Security Update 2008-002, available from the Apple Web site. See References.
For other distributions:
Apply the appropriate update for your system. See References.
Consequences:
Gain Access
References:
- Apple Web site, About Security Update 2008-002 at http://docs.info.apple.com/article.html?artnum=307562.
- Clam AntiVirus Web site, Clam AntiVirus at http://www.clamav.net/.
- iDefense PUBLIC ADVISORY: 12.18.07, ClamAV libclamav MEW PE File Integer Overflow Vulnerability at http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=634.
- BID-26927: ClamAV 'libclamav/pe.c' MEW Packed PE File Integer Overflow Vulnerability
- CVE-2007-6335: Integer overflow in libclamav in ClamAV before 0.92 allows remote attackers to execute arbitrary code via a crafted MEW packed PE file, which triggers a heap-based buffer overflow.
- DSA-1435: clamav -- several vulnerabilities
- FrSIRT/ADV-2007-4253: ClamAV Multiple File Format Handling Buffer Overflow Vulnerabilities
- FrSIRT/ADV-2008-0924: Apple Mac OS X Command Execution and Security Bypass Issues
- GLSA-200712-20: ClamAV: Multiple vulnerabilities
- MDVSA-2008:003: Updated clamav packages fix multiple vulnerabilities
- SA28117: ClamAV Multiple Vulnerabilities
- SA28421: Kolab Server ClamAV Multiple Vulnerabilities
- SA29420: Mac OS X Security Update Fixes Multiple Vulnerabilities
- SECTRACK ID: 1019112: Clam AntiVirus Integer Overflow in Processing MEW Packed Files Lets Remote Users Execute Arbitrary Code
- SUSE-SR:2008:001: SUSE Security Summary Report
Reported:
Dec 18, 2007
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