ClamAV UPX File Handling Buffer Overflow Vulnerability - Advisories

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ClamAV UPX File Handling Buffer Overflow Vulnerability

Secunia Advisory:	SA18379
Release Date:	2006-01-10
Last Update:	2006-01-17

Critical:	Highly critical
Impact:	System access
Where:	From remote
Solution Status:	Vendor Patch

Software:	Clam AntiVirus (clamav) 0.x

CVE reference:	CVE-2006-0162 (Secunia mirror)

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Description: A vulnerability has been reported in ClamAV, which can be exploited by malicious people to compromise a vulnerable system. The vulnerability is caused due to a boundary error in "libclamav/upx.c" when unpacking executable files compressed with UPX. This can be exploited to cause a heap-based buffer overflow and potentially allows arbitrary code execution via a specially-crafted UPX packed file. The vulnerability has been reported in versions 0.80 through 0.87.1. Solution: Update to version 0.88. http://www.clamav.net/stable.php#pagestart Provided and/or discovered by: Discovered by anonymous and reported via 3Com's Zero Day Initiative. Changelog: 2006-01-13: Updated advisory with information from 3Com's Zero Day Initiative. 2006-01-17: Added link to US-CERT vulnerability note. Original Advisory: ClamAV: http://www.clamav.net/doc/0.88/ChangeLog 3Com's Zero Day Initiative: http://www.zerodayinitiative.com/advisories/ZDI-06-001.html Other References: US-CERT VU#385908: http://www.kb.cert.org/vuls/id/385908



Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise. Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.

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