GLSA 200507-25: Clam AntiVirus: Integer overflows

http://security.gentoo.org/

Severity:	high
Title:	Clam AntiVirus: Integer overflows
Date:	07/26/2005
Bugs:	#100178
ID:	200507-25

Synopsis

Clam AntiVirus is vulnerable to integer overflows when handling several file formats, potentially resulting in the execution of arbitrary code.

Background

Clam AntiVirus is a GPL anti-virus toolkit, designed for integration with mail servers to perform attachment scanning. Clam AntiVirus also provides a command line scanner and a tool for fetching updates of the virus database.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
app-antivirus/clamav	< 0.86.2	>= 0.86.2	All supported architectures

Description

Neel Mehta and Alex Wheeler discovered that Clam AntiVirus is vulnerable to integer overflows when handling the TNEF, CHM and FSG file formats.

Impact

By sending a specially-crafted file an attacker could execute arbitrary code with the permissions of the user running Clam AntiVirus.

Workaround

There is no known workaround at this time.

Resolution

All Clam AntiVirus users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-antivirus/clamav-0.86.2"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200507-25.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.