Multiple vulnerabilities have been found in pwlib that may lead to a remote denial of service or buffer overflow attack.
|Package||dev-libs/pwlib on all architectures|
|Affected versions||<= 1.5.2-r2|
|Unaffected versions||>= 1.5.2-r3|
pwlib is a multi-platform library designed for OpenH323.
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.
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.
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.
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"
April 09, 2004
April 09, 2004: 01