GLSA 200909-04: Clam AntiVirus: Multiple vulnerabilities

http://security.gentoo.org/

Severity:	normal
Title:	Clam AntiVirus: Multiple vulnerabilities
Date:	09/09/2009
Bugs:	#264834, #265545
ID:	200909-04

Synopsis

Multiple vulnerabilities in ClamAV allow for the remote execution of arbitrary code or Denial of Service.

Background

Clam AntiVirus (short: ClamAV) is an anti-virus toolkit for UNIX, designed especially for e-mail scanning on mail gateways.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
app-antivirus/clamav	< 0.95.2	>= 0.95.2	All supported architectures

Description

Multiple vulnerabilities have been found in ClamAV:

The vendor reported a Divide-by-zero error in the PE ("Portable Executable"; Windows .exe) file handling of ClamAV (CVE-2008-6680).
Jeffrey Thomas Peckham found a flaw in libclamav/untar.c, possibly resulting in an infinite loop when processing TAR archives in clamd and clamscan (CVE-2009-1270).
Martin Olsen reported a vulnerability in the CLI_ISCONTAINED macro in libclamav/others.h, when processing UPack archives (CVE-2009-1371).
Nigel disclosed a stack-based buffer overflow in the "cli_url_canon()" function in libclamav/phishcheck.c when processing URLs (CVE-2009-1372).

Impact

A remote attacker could entice a user or automated system to process a specially crafted UPack archive or a file containing a specially crafted URL, possibly resulting in the remote execution of arbitrary code with the privileges of the user running the application, or a Denial of Service. Furthermore, a remote attacker could cause a Denial of Service by supplying a specially crafted TAR archive or PE executable to a Clam AntiVirus instance.

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-0.95.2"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200909-04.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.