[ GLSA 200403-01 ] Libxml2 URI Parsing Buffer Overflow Vulnerabilities
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Gentoo Linux Security Advisory GLSA 200403-01
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~ http://security.gentoo.org
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~ Severity: Normal
~ Title: Libxml2 URI Parsing Buffer Overflow Vulnerabilities
~ Date: March 06, 2004
~ Bugs: #42735
~ ID: 200403-01
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Synopsis
========
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.
Description
===========
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.
Impact
======
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.
Workaround
==========
No workaround is available; users are urged to upgrade libxml2 to
2.6.6.
Resolution
==========
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"
References
==========
~ [ 1 ] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0110
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@xxxxxxxxxx or alternatively, you may file a bug at
http://bugs.gentoo.org.
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