GLSA 200501-46: ClamAV: Multiple issues

http://security.gentoo.org/

Severity:	normal
Title:	ClamAV: Multiple issues
Date:	01/31/2005
Bugs:	#78656, #79194
ID:	200501-46

Synopsis

ClamAV contains two vulnerabilities that could lead to Denial of Service and evasion of virus scanning.

Background

ClamAV is an antivirus toolkit. It includes a multi-threaded daemon and a command line scanner.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
app-antivirus/clamav	<= 0.80	>= 0.81	All supported architectures

Description

ClamAV fails to properly scan ZIP files with special headers (CAN-2005-0133) and base64 encoded images in URLs.

Impact

By sending a base64 encoded image file in a URL an attacker could evade virus scanning. By sending a specially-crafted ZIP file an attacker could cause a Denial of Service by crashing the clamd daemon.

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-0.81"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200501-46.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.