Joined: 13 Jun 2003
Location: Barcelona, Spain
|Posted: Sat Mar 06, 2004 11:48 pm Post subject: [ GLSA 200403-01 ] Libxml2 URI Parsing Buffer Overflow Vulne
|Gentoo Linux Security Advisory
Title: Libxml2 URI Parsing Buffer Overflow Vulnerabilities (GLSA 200403-01)
Exploitable: local and remote combination
Date: March 05, 2004
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 arbitrary code.
Vulnerable: < 2.6.6
Unaffected: >= 2.6.6
Architectures: All supported architectures
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:
|# emerge sync
# emerge -pv ">=dev-libs/libxml2-2.6.6"
# emerge ">=dev-libs/libxml2-2.6.6"
Last edited by GLSA on Sun May 07, 2006 4:50 pm; edited 1 time in total