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ESB-2014.1657 - ALERT [UNIX/Linux][Debian] bash: Execute arbitrary code/commands - Remote/unauthenticated

Date: 25 September 2014
References: ESB-2014.1659  ESB-2014.1660  ESB-2014.1668  ESB-2014.1669.2  ESB-2014.1670  ESB-2014.1671  ESB-2014.1672  ESB-2014.1673  ASB-2014.0110  ESB-2014.1674  
ESB-2014.1725.2  ESB-2014.1730  ESB-2014.1746  ESB-2014.1747  ESB-2014.1821  ESB-2014.1824  ESB-2014.1855  ESB-2014.1870  ESB-2014.1877  ESB-2014.1898  ESB-2014.1899  
ESB-2014.1901  ESB-2014.1902  ESB-2014.1903  ESB-2014.1904  ESB-2014.1905  ESB-2014.1917  ESB-2014.1974  ESB-2014.2161  ESB-2014.2227  ESB-2014.2416  ESB-2015.0488  
ESB-2015.0712  ESB-2015.0739  ESB-2015.0938  

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Click here for PGP verifiable version
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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2014.1657
                           bash security update
                             25 September 2014

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           bash
Publisher:         Debian
Operating System:  Debian GNU/Linux 7
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-6271  

Original Bulletin: 
   http://www.debian.org/security/2014/dsa-3032

Comment: AusCERT has received reports that this vulnerability is 
         currently being exploited in the wild. Administrators should patch
         vulnerable systems as soon as possible.
         
         This advisory references vulnerabilities in products which run on 
         platforms other than Debian. It is recommended that administrators 
         running bash check for an updated version of the software for their
         operating system.

- --------------------------BEGIN INCLUDED TEXT--------------------

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- - -------------------------------------------------------------------------
Debian Security Advisory DSA-3032-1                   security@debian.org
http://www.debian.org/security/                            Florian Weimer
September 24, 2014                     http://www.debian.org/security/faq
- - -------------------------------------------------------------------------

Package        : bash
CVE ID         : CVE-2014-6271

Stephane Chazelas discovered a vulnerability in bash, the GNU
Bourne-Again Shell, related to how environment variables are
processed.  In many common configurations, this vulnerability is
exploitable over the network, especially if bash has been configured
as the system shell.

For the stable distribution (wheezy), this problem has been fixed in
version 4.2+dfsg-0.1+deb7u1.

We recommend that you upgrade your bash packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        http://www.auscert.org.au/render.html?cid=1980

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
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