[ 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: