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Multiple Vulnerabilities in pwlib

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200404-11 / dev-libs/pwlib
Release Date April 09, 2004
Latest Revision April 09, 2004: 01
Impact high
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
dev-libs/pwlib <= 1.5.2-r2 >= 1.5.2-r3 All supported architectures

Related bugreports: #45846

Synopsis

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

2.  Impact Information

Background

pwlib is a multi-platform library designed for OpenH323.

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.

3.  Resolution Information

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:

Code Listing 3.1: Resolution

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

4.  References



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Page updated April 09, 2004

Summary: This is a Gentoo Linux Security Advisory

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