GLSA 200404-11: Multiple Vulnerabilities in pwlib

http://security.gentoo.org/

Severity:	high
Title:	Multiple Vulnerabilities in pwlib
Date:	04/09/2004
Bugs:	#45846
ID:	200404-11

Synopsis

Multiple vulnerabilities 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

Package	Vulnerable	Unaffected	Architecture(s)
dev-libs/pwlib	<= 1.5.2-r2	>= 1.5.2-r3	All supported architectures

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

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 https://bugs.gentoo.org.