Libxml2 URI Parsing Buffer Overflow Vulnerabilities
Gentoo Linux Security Advisory
||GLSA 200403-01 / libxml
||March 05, 2004
||March 05, 2004: 01
||local and remote combination
All supported architectures
A buffer overflow has been discovered in libxml2 versions prior to
2.6.6 which may be exploited by an attacker allowing the execution of
Yuuichi Teranishi discovered a flaw in libxml2 versions prior to 2.6.6.
When the libxml2 library fetches a remote resource via FTP or HTTP, libxml2
uses parsing routines that can overflow a buffer caused by improper bounds
checking if they are passed a URL longer than 4096 bytes.
If an attacker is able to exploit an application using libxml2 that parses
remote resources, then this flaw could be used to execute arbitrary code.
No workaround is available; users are urged to upgrade libxml2 to 2.6.6.
All users are recommended to upgrade their libxml2 installation:
Code Listing 3.1: Resolution
# emerge sync
# emerge -pv ">=dev-libs/libxml2-2.6.6"
# emerge ">=dev-libs/libxml2-2.6.6"