GLSA-200703-01 : Snort: Remote execution of arbitrary code

This script is Copyright (C) 2007-2014 Tenable Network Security, Inc.


Synopsis :

The remote Gentoo host is missing one or more security-related
patches.

Description :

The remote host is affected by the vulnerability described in GLSA-200703-01
(Snort: Remote execution of arbitrary code)

The Snort DCE/RPC preprocessor does not properly reassemble certain
types of fragmented SMB and DCE/RPC packets.

Impact :

A remote attacker could send specially crafted fragmented SMB or
DCE/RPC packets, without the need to finish the TCP handshake, that
would trigger a stack-based buffer overflow while being reassembled.
This could lead to the execution of arbitrary code with the permissions
of the user running the Snort preprocessor.

Workaround :

Disable the DCE/RPC processor by commenting the 'preprocessor dcerpc'
section in /etc/snort/snort.conf .

See also :

http://www.gentoo.org/security/en/glsa/glsa-200703-01.xml

Solution :

All Snort users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=net-analyzer/snort-2.6.1.3'

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
Public Exploit Available : true

Family: Gentoo Local Security Checks

Nessus Plugin ID: 24749 (gentoo_GLSA-200703-01.nasl)

Bugtraq ID:

CVE ID: CVE-2006-5276