[ GLSA 200608-13 ] ClamAV: Heap buffer overflow

[GLSA]

Gentoo Linux Security Advisory

Title: ClamAV: Heap buffer overflow (GLSA 200608-13)
Severity: high
Exploitable: remote
Date: August 08, 2006
Bug(s): #143093
ID: 200608-13

Synopsis

ClamAV is vulnerable to a heap-based buffer overflow resulting in a Denial of Service and potentially remote execution of arbitrary code.

Background

ClamAV is a GPL virus scanner.

Affected Packages

Package: app-antivirus/clamav
Vulnerable: < 0.88.4
Unaffected: >= 0.88.4
Architectures: All supported architectures


Description

Damian Put has discovered a boundary error in the pefromupx() function used by the UPX extraction module, which unpacks PE Windows executable files. Both the "clamscan" command-line utility and the "clamd" daemon are affected.

Impact

By sending a malicious attachment to a mail server running ClamAV, a remote attacker can cause a Denial of Service and potentially the execution of arbitrary code with the permissions of the user running ClamAV.

Workaround

There is no known workaround at this time.

Resolution

All ClamAV users should upgrade to the latest version: