GLSA 200608-13: ClamAV: Heap buffer overflow

http://security.gentoo.org/

Severity:	high
Title:	ClamAV: Heap buffer overflow
Date:	08/08/2006
Bugs:	#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	Vulnerable	Unaffected	Architecture(s)
app-antivirus/clamav	< 0.88.4	>= 0.88.4	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:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-antivirus/clamav-0.88.4"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200608-13.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.