GLSA 200605-03: ClamAV: Buffer overflow in Freshclam

http://security.gentoo.org/

Severity:	normal
Title:	ClamAV: Buffer overflow in Freshclam
Date:	05/02/2006
Bugs:	#131791
ID:	200605-03

Synopsis

Freshclam is vulnerable to a buffer overflow that could lead to execution of arbitrary code.

Background

ClamAV is a GPL virus scanner. Freshclam is a utility to download virus signature updates.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
app-antivirus/clamav	< 0.88.2	>= 0.88.2	All supported architectures

Description

Ulf Harnhammar and an anonymous German researcher discovered that Freshclam fails to check the size of the header data returned by a webserver.

Impact

By enticing a user to connect to a malicious webserver an attacker could cause the execution of arbitrary code.

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-0.88.2"

References

CVE-2006-1989

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200605-03.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.