ClamAV < 0.97.2 'cli_hm_scan' Denial of Service

This script is Copyright (C) 2011-2014 Tenable Network Security, Inc.


Synopsis :

The remote antivirus service is affected by a denial of service
vulnerability.

Description :

According to its version, the ClamAV clamd antivirus daemon on the
remote host is earlier than 0.97.2. As such, it is potentially
affected by a denial of service vulnerability.

An off-by-one error exists in the 'cli_hm_scan' function in the file
'libclamav/matcher-hash.c' that can be exploited by a specially
crafted message causing the clamd daemon to crash.

See also :

http://blog.clamav.net/2011/07/clamav-0972-is-now-available.html
http://www.nessus.org/u?9a96973b
https://bugzilla.clamav.net/show_bug.cgi?id=2818

Solution :

Upgrade to ClamAV 0.97.2 or later.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)
CVSS Temporal Score : 4.1
(CVSS2#E:F/RL:OF/RC:C)
Public Exploit Available : true

Family: Misc.

Nessus Plugin ID: 55905 ()

Bugtraq ID: 48891

CVE ID: CVE-2011-2721