[ GLSA 200404-11 ] Multiple Vulnerabilities in pwlib

[GLSA]

Gentoo Linux Security Advisory

Title: Multiple Vulnerabilities in pwlib (GLSA 200404-11)
Severity: high
Exploitable: remote
Date: April 09, 2004
Bug(s): #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: dev-libs/pwlib
Vulnerable: <= 1.5.2-r2
Unaffected: >= 1.5.2-r3
Architectures: 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: