[ GLSA 200408-26 ] zlib: Denial of service vulnerability

[pahud]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200408-26
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Severity: Normal
Title: zlib: Denial of service vulnerability
Date: August 27, 2004
Bugs: #61749
ID: 200408-26

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

The zlib library contains a Denial of Service vulnerability.

Background
==========

zlib is a general-purpose data-compression library.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 sys-libs/zlib <= 1.2.1-r2 >= 1.2.1-r3

Description
===========

zlib contains a bug in the handling of errors in the "inflate()" and
"inflateBack()" functions.

Impact
======

An attacker could exploit this vulnerability to launch a Denial of
Service attack on any application using the zlib library.

Workaround
==========

There is no known workaround at this time. All users are encouraged to
upgrade to the latest available version of zlib.

Resolution
==========

All zlib users should upgrade to the latest version:

# emerge sync

# emerge -pv ">=sys-libs/zlib-1.2.1-r3"
# emerge ">=sys-libs/zlib-1.2.1-r3"

You should also run revdep-rebuild to rebuild any packages that depend
on older versions of zlib :

# revdep-rebuild

References
==========

[ 1 ] OpenPKG-SA-2004.038-zlib
http://www.openpkg.org/security/OpenPKG ... -zlib.html

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200408-26.xml

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@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2004 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/1.0
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)

iD8DBQFBL4HwzKC5hMHO6rkRAh2AAJ9FErl2R7QrRcOuPCSfUojOsMIhKwCePwDq
Fi2c3A5pOl+YXWbZV0/om70=
=i0HL
-----END PGP SIGNATURE-----