Clam AntiVirus libclamav/upx.c buffer overflow
| clam-antivirus-upx-bo (22307) |  High Risk |
Description:
Clam AntiVirus is vulnerable to a buffer overflow caused by a signedness error in libclamav/upx.c when processing a malformed UPX-compressed executable file. A remote attacker could exploit this vulnerability to cause a buffer overflow and possibly compromise the system.
Platforms Affected:
- Clam Anti-Virus, ClamAV 0.86.2 and prior
- Debian, Debian Linux 3.1
- Gentoo, Linux
- MandrakeSoft, Mandrake Linux 10.1
- MandrakeSoft, Mandrake Linux 10.1 X86_64
- MandrakeSoft, Mandrake Linux LE2005
- MandrakeSoft, Mandrake Linux LE2005 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 3.0
- MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
- SuSE, Linux Enterprise Server 9
- SuSE, SuSE Linux 10.0
- SuSE, SuSE Linux 9.1
- SuSE, SuSE Linux 9.2
- SuSE, SuSE Linux 9.3
Remedy:
Upgrade to the latest version of Clam AntiVirus (0.87 or later), available from the ClamAV Download Web page. See References.
For Debian GNU/Linux:
Refer to DSA-824-1 for patch, upgrade, or suggested workaround information. See References.
For Gentoo Linux:
Refer to Gentoo Linux Security Announcement GLSA 2005-09-13 for patch, upgrade, or suggested workaround information. See References.
For SUSE Linux:
Refer to SUSE Security Announcement SUSE-SA:2005:055 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Gain Access
References:
- ClamAV Download Web page, clamav 0.86.1 released at http://www.clamav.net/stable.php#pagestart.
- SourceForge.net: Files, Clam AntiVirus - File Release Notes and Changelog - Release Name: 0.87 at http://sourceforge.net/project/shownotes.php?release_id=356974.
- BID-14866: ClamAV UPX Compressed Executable Buffer Overflow Vulnerability
- CVE-2005-2920: Buffer overflow in libclamav/upx.c in Clam AntiVirus (ClamAV) before 0.87 allows remote attackers to execute arbitrary code via a crafted UPX packed executable.
- DSA-824: clamav -- infinite loop
- GLSA-200509-13: Clam AntiVirus: Multiple vulnerabilities
- MDKSA-2005:166: Updated clamv packages fix vulnerabilities
- SA16848: ClamAV UPX and FSG Handling Vulnerabilities
- SUSE-SA:2005:055: clamav: remote code execution
- US-CERT VU#363713: Clam AntiVirus contains a buffer overflow vulnerability
- VUPEN/ADV-2005-1774: Clam AntiVirus (ClamAV) Buffer Overflow and DoS Vulnerabilities
Reported:
Sep 19, 2005
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