GLSA-200804-27 : SILC: Multiple vulnerabilities

This script is Copyright (C) 2008-2014 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-200804-27
(SILC: Multiple vulnerabilities)

Nathan G. Grennan reported a boundary error in SILC Toolkit
within the silc_fingerprint() function in the file
lib/silcutil/silcutil.c when passing overly long data, resulting in a
stack-based buffer overflow (CVE-2008-1227).
A vulnerability
has been reported in SILC Server which is caused due to an error in the
handling of 'NEW_CLIENT' packets that do not contain a nickname
(CVE-2008-1429).
Ariel Waissbein, Pedro Varangot, Martin
Mizrahi, Oren Isacson, Carlos Garcia, and Ivan Arce of Core Security
Technologies reported that SILC Client, Server, and Toolkit contain a
vulnerability in the silc_pkcs1_decode() function in the silccrypt
library (silcpkcs1.c), resulting in an integer underflow, signedness
error, and a buffer overflow (CVE-2008-1552).

Impact :

A remote attacker could exploit these vulnerabilities to cause a Denial
of Service or execute arbitrary code with the privileges of the user
running the application.

Workaround :

There is no known workaround at this time.

See also :

http://www.gentoo.org/security/en/glsa/glsa-200804-27.xml

Solution :

All SILC Toolkit users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=net-im/silc-toolkit-1.1.7'
All SILC Client users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=net-im/silc-client-1.1.4'
All SILC Server users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=net-im/silc-server-1.1.2'

Risk factor :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)

Family: Gentoo Local Security Checks

Nessus Plugin ID: 32073 (gentoo_GLSA-200804-27.nasl)

Bugtraq ID:

CVE ID: CVE-2008-1227
CVE-2008-1429
CVE-2008-1552