CentOS - Jul 2005 - [Fwd: [Full-disclosure] [ GLSA 200507-05 ] zlib: Buffer overflow]

Has Centos been tested for this yet?


-------- Original Message --------
Subject: [Full-disclosure] [ GLSA 200507-05 ] zlib: Buffer overflow
Date: Wed, 06 Jul 2005 16:23:20 +0200
From: Thierry Carrez <koon at gentoo.org>
Organization: Gentoo Linux
To: gentoo-announce at lists.gentoo.org
CC: full-disclosure at lists.grok.org.uk, 
bugtraq at securityfocus.com,	security-alerts at linuxsecurity.com

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Gentoo Linux Security Advisory                           GLSA 
200507-05
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http://security.gentoo.org/
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   Severity: High
      Title: zlib: Buffer overflow
       Date: July 06, 2005
       Bugs: #98121
         ID: 200507-05

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Synopsis
=======
A buffer overflow has been discovered in zlib, potentially 
resulting in
the execution of arbitrary code.

Background
=========
zlib is a widely used free and patent unencumbered data compression
library.

Affected packages
================
 
-------------------------------------------------------------------
      Package        /  Vulnerable  / 
Unaffected
 
-------------------------------------------------------------------
   1  sys-libs/zlib     < 1.2.2-r1                          >= 
1.2.2-r1

Description
==========
Tavis Ormandy of the Gentoo Linux Security Audit Team discovered a
buffer overflow in zlib. A bounds checking operation failed to take
invalid data into account, allowing a specifically malformed deflate
data stream to overrun a buffer.

Impact
=====
An attacker could construct a malformed data stream, embedding it
within network communication or an application file format, 
potentially
resulting in the execution of arbitrary code when decoded by the
application using the zlib library.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All zlib users should upgrade to the latest version:

     # emerge --sync
     # emerge --ask --oneshot --verbose ">=sys-libs/zlib-1.2.2-r1"

References
=========
   [ 1 ] CAN-2005-2096
 
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2096

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

   http://security.gentoo.org/glsa/glsa-200507-05.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 at gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
======
Copyright 2005 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/2.0




-- 
My "Foundation" verse:
Isa 54:17  No weapon that is formed against thee shall prosper; 
and every tongue that shall rise against thee in judgment thou 
shalt condemn. This is the heritage of the servants of the LORD, 
and their righteousness is of me, saith the LORD.

-- carpe ductum -- "Grab the tape"
CDTT (Certified Duct Tape Technician)

Linux user #322099
Machines:
206822
256638
276825
http://counter.li.org/
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http://lists.centos.org/pipermail/centos-announce/2005-July/thread.html

On 7/7/05, William Warren <hescominsoon at emmanuelcomputerconsulting.com>
wrote:
> Has Centos been tested for this yet?
> 
> 
> -------- Original Message --------
> Subject: [Full-disclosure] [ GLSA 200507-05 ] zlib: Buffer overflow
> Date: Wed, 06 Jul 2005 16:23:20 +0200
> From: Thierry Carrez <koon at gentoo.org>
> Organization: Gentoo Linux
> To: gentoo-announce at lists.gentoo.org
> CC: full-disclosure at lists.grok.org.uk,
> bugtraq at securityfocus.com,      security-alerts at linuxsecurity.com
> 
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> - - -
> Gentoo Linux Security Advisory                           GLSA
> 200507-05
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> - - -
> 
> http://security.gentoo.org/
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> - - -
> 
>    Severity: High
>       Title: zlib: Buffer overflow
>        Date: July 06, 2005
>        Bugs: #98121
>          ID: 200507-05
> 
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> - - -
> 
> Synopsis
> =======> 
> A buffer overflow has been discovered in zlib, potentially
> resulting in
> the execution of arbitrary code.
> 
> Background
> =========> 
> zlib is a widely used free and patent unencumbered data compression
> library.
> 
> Affected packages
> ================> 
> 
> -------------------------------------------------------------------
>       Package        /  Vulnerable  /
> Unaffected
> 
> -------------------------------------------------------------------
>    1  sys-libs/zlib     < 1.2.2-r1                          >>
1.2.2-r1
> 
> Description
> ==========> 
> Tavis Ormandy of the Gentoo Linux Security Audit Team discovered a
> buffer overflow in zlib. A bounds checking operation failed to take
> invalid data into account, allowing a specifically malformed deflate
> data stream to overrun a buffer.
> 
> Impact
> =====> 
> An attacker could construct a malformed data stream, embedding it
> within network communication or an application file format,
> potentially
> resulting in the execution of arbitrary code when decoded by the
> application using the zlib library.
> 
> Workaround
> =========> 
> There is no known workaround at this time.
> 
> Resolution
> =========> 
> All zlib users should upgrade to the latest version:
> 
>      # emerge --sync
>      # emerge --ask --oneshot --verbose
">=sys-libs/zlib-1.2.2-r1"
> 
> References
> =========> 
>    [ 1 ] CAN-2005-2096
> 
> http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2096
> 
> Availability
> ===========> 
> This GLSA and any updates to it are available for viewing at
> the Gentoo Security Website:
> 
>    http://security.gentoo.org/glsa/glsa-200507-05.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 at gentoo.org or alternatively, you may file a bug at
> http://bugs.gentoo.org.
> 
> License
> ======> 
> Copyright 2005 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/2.0
> 
> 
> 
> 
> --
> My "Foundation" verse:
> Isa 54:17  No weapon that is formed against thee shall prosper;
> and every tongue that shall rise against thee in judgment thou
> shalt condemn. This is the heritage of the servants of the LORD,
> and their righteousness is of me, saith the LORD.
> 
> -- carpe ductum -- "Grab the tape"
> CDTT (Certified Duct Tape Technician)
> 
> Linux user #322099
> Machines:
> 206822
> 256638
> 276825
> http://counter.li.org/
> 
> 
> BodyID:422675878.2.n.logpart (stored separately)
> 
> _______________________________________________
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> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
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> 
> 
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> 
> 

-- 
Beau Henderson