[ GLSA 200501-46 ] ClamAV: Multiple issues

2005-02-0100:00:00

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Gentoo Linux Security Advisory GLSA 200501-46

                                        http://security.gentoo.org/

Severity: Normal
Title: ClamAV: Multiple issues
Date: January 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
-------------------------------------------------------------------

1 app-antivirus/clamav <= 0.80 >= 0.81

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 &quot;&gt;=app-antivirus/clamav-0.81&quot;

References

[ 1 ] CAN-2005-0133
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0133
[ 2 ] ClamAV Release Announcement
http://sourceforge.net/forum/forum.php?forum_id=440649
[ 3 ] Secunia SA13900
http://secunia.com/advisories/13900/

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
[email protected] or alternatively, you may file a bug at
http://bugs.gentoo.org.