GLSA 200404-11: Multiple Vulnerabilities in pwlib
Posted on: 04/09/2004 09:48 AM

A pwlib update has been released for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200404-11
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http://security.gentoo.org
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Severity: High
Title: Multiple Vulnerabilities in pwlib

Date: April 09, 2004
Bugs: #45846
ID: 200404-11

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Synopsis
=======

Multiple vulnerabilites have been found in pwlib that may lead to a remote denial of service or buffer overflow attack.

Background
=========

pwlib is a multi-platform library designed for OpenH323.

Affected packages
================

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Package / Vulnerable / Unaffected
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dev-libs/pwlib <= 1.5.2-r2 >= 1.5.2-r3

Description
==========

Multiple vulnerabilities have been found in the implimentation of protocol H.323 contained in pwlib. Most of the vulnerabilies are in the parsing of ASN.1 elements which would allow an attacker to use a maliciously crafted ASN.1 element to cause unpredictable behavior in pwlib.

Impact
=====

An attacker may cause a denial of service condition or cause a buffer overflow that would allow arbitrary code to be executed with root privileges.

Workaround
=========

Blocking ports 1719 and 1720 may reduce the likelihood of an attack. All users are advised to upgrade to the latest version of the affected package.

Resolution
=========

All pwlib users are advised to upgrade to version 1.5.2-r3 or later:

# emerge sync

# emerge -pv ">=dev-libs/pwlib-1.5.2-r3"
# emerge ">=dev-libs/pwlib-1.5.2-r3"

References
=========

[ 1 ] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0097
[ 2 ] http://www.uniras.gov.uk/vuls/2004/006489/h323.htm

Availability
===========

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200404-11.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 http://bugs.gentoo.org.


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