Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2014.1673
Important: bash security update
26 September 2014
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: bash
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 5
Red Hat Enterprise Linux WS/Desktop 5
Red Hat Enterprise Linux Server 6
Red Hat Enterprise Linux WS/Desktop 6
Red Hat Enterprise Linux Server 7
Red Hat Enterprise Linux WS/Desktop 7
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-7169 CVE-2014-6271
Reference: ESB-2014.1672
ESB-2014.1671
ESB-2014.1670
ESB-2014.1669
ESB-2014.1668
ESB-2014.1660
ESB-2014.1659
ESB-2014.1657
Original Bulletin:
https://rhn.redhat.com/errata/RHSA-2014-1306.html
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Red Hat Security Advisory
Synopsis: Important: bash security update
Advisory ID: RHSA-2014:1306-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2014-1306.html
Issue date: 2014-09-26
CVE Names: CVE-2014-7169
=====================================================================
1. Summary:
Updated bash packages that fix one security issue are now available for Red
Hat Enterprise Linux 5, 6, and 7.
Red Hat Product Security has rated this update as having Important security
impact. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available from the CVE link in the
References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server (v. 7) - ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64
3. Description:
The GNU Bourne Again shell (Bash) is a shell and command language
interpreter compatible with the Bourne shell (sh). Bash is the default
shell for Red Hat Enterprise Linux.
It was found that the fix for CVE-2014-6271 was incomplete, and Bash still
allowed certain characters to be injected into other environments via
specially crafted environment variables. An attacker could potentially use
this flaw to override or bypass environment restrictions to execute shell
commands. Certain services and applications allow remote unauthenticated
attackers to provide environment variables, allowing them to exploit this
issue. (CVE-2014-7169)
Applications which directly create bash functions as environment variables
need to be made aware of changes to the way names are handled by this
update. For more information see the Knowledgebase article at
https://access.redhat.com/articles/1200223
Note: Docker users are advised to use "yum update" within their containers,
and to commit the resulting changes.
For additional information on CVE-2014-6271 and CVE-2014-7169, refer to the
aforementioned Knowledgebase article.
All bash users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue.
4. Solution:
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to use the
Red Hat Network to apply this update are available at
https://access.redhat.com/articles/11258
5. Bugs fixed (https://bugzilla.redhat.com/):
1146319 - CVE-2014-7169 bash: code execution via specially-crafted environment (Incomplete fix for CVE-2014-6271)
6. Package List:
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
bash-3.2-33.el5_11.4.src.rpm
i386:
bash-3.2-33.el5_11.4.i386.rpm
bash-debuginfo-3.2-33.el5_11.4.i386.rpm
x86_64:
bash-3.2-33.el5_11.4.x86_64.rpm
bash-debuginfo-3.2-33.el5_11.4.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
bash-3.2-33.el5_11.4.src.rpm
i386:
bash-3.2-33.el5_11.4.i386.rpm
bash-debuginfo-3.2-33.el5_11.4.i386.rpm
ia64:
bash-3.2-33.el5_11.4.i386.rpm
bash-3.2-33.el5_11.4.ia64.rpm
bash-debuginfo-3.2-33.el5_11.4.i386.rpm
bash-debuginfo-3.2-33.el5_11.4.ia64.rpm
ppc:
bash-3.2-33.el5_11.4.ppc.rpm
bash-debuginfo-3.2-33.el5_11.4.ppc.rpm
s390x:
bash-3.2-33.el5_11.4.s390x.rpm
bash-debuginfo-3.2-33.el5_11.4.s390x.rpm
x86_64:
bash-3.2-33.el5_11.4.x86_64.rpm
bash-debuginfo-3.2-33.el5_11.4.x86_64.rpm
Red Hat Enterprise Linux Desktop (v. 6):
Source:
bash-4.1.2-15.el6_5.2.src.rpm
i386:
bash-4.1.2-15.el6_5.2.i686.rpm
bash-debuginfo-4.1.2-15.el6_5.2.i686.rpm
x86_64:
bash-4.1.2-15.el6_5.2.x86_64.rpm
bash-debuginfo-4.1.2-15.el6_5.2.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
bash-4.1.2-15.el6_5.2.src.rpm
i386:
bash-debuginfo-4.1.2-15.el6_5.2.i686.rpm
bash-doc-4.1.2-15.el6_5.2.i686.rpm
x86_64:
bash-debuginfo-4.1.2-15.el6_5.2.x86_64.rpm
bash-doc-4.1.2-15.el6_5.2.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
bash-4.1.2-15.el6_5.2.src.rpm
x86_64:
bash-4.1.2-15.el6_5.2.x86_64.rpm
bash-debuginfo-4.1.2-15.el6_5.2.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
bash-4.1.2-15.el6_5.2.src.rpm
x86_64:
bash-debuginfo-4.1.2-15.el6_5.2.x86_64.rpm
bash-doc-4.1.2-15.el6_5.2.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
bash-4.1.2-15.el6_5.2.src.rpm
i386:
bash-4.1.2-15.el6_5.2.i686.rpm
bash-debuginfo-4.1.2-15.el6_5.2.i686.rpm
ppc64:
bash-4.1.2-15.el6_5.2.ppc64.rpm
bash-debuginfo-4.1.2-15.el6_5.2.ppc64.rpm
s390x:
bash-4.1.2-15.el6_5.2.s390x.rpm
bash-debuginfo-4.1.2-15.el6_5.2.s390x.rpm
x86_64:
bash-4.1.2-15.el6_5.2.x86_64.rpm
bash-debuginfo-4.1.2-15.el6_5.2.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
Source:
bash-4.1.2-15.el6_5.2.src.rpm
i386:
bash-debuginfo-4.1.2-15.el6_5.2.i686.rpm
bash-doc-4.1.2-15.el6_5.2.i686.rpm
ppc64:
bash-debuginfo-4.1.2-15.el6_5.2.ppc64.rpm
bash-doc-4.1.2-15.el6_5.2.ppc64.rpm
s390x:
bash-debuginfo-4.1.2-15.el6_5.2.s390x.rpm
bash-doc-4.1.2-15.el6_5.2.s390x.rpm
x86_64:
bash-debuginfo-4.1.2-15.el6_5.2.x86_64.rpm
bash-doc-4.1.2-15.el6_5.2.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
bash-4.1.2-15.el6_5.2.src.rpm
i386:
bash-4.1.2-15.el6_5.2.i686.rpm
bash-debuginfo-4.1.2-15.el6_5.2.i686.rpm
x86_64:
bash-4.1.2-15.el6_5.2.x86_64.rpm
bash-debuginfo-4.1.2-15.el6_5.2.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
Source:
bash-4.1.2-15.el6_5.2.src.rpm
i386:
bash-debuginfo-4.1.2-15.el6_5.2.i686.rpm
bash-doc-4.1.2-15.el6_5.2.i686.rpm
x86_64:
bash-debuginfo-4.1.2-15.el6_5.2.x86_64.rpm
bash-doc-4.1.2-15.el6_5.2.x86_64.rpm
Red Hat Enterprise Linux Client (v. 7):
Source:
bash-4.2.45-5.el7_0.4.src.rpm
x86_64:
bash-4.2.45-5.el7_0.4.x86_64.rpm
bash-debuginfo-4.2.45-5.el7_0.4.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64:
bash-debuginfo-4.2.45-5.el7_0.4.x86_64.rpm
bash-doc-4.2.45-5.el7_0.4.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source:
bash-4.2.45-5.el7_0.4.src.rpm
x86_64:
bash-4.2.45-5.el7_0.4.x86_64.rpm
bash-debuginfo-4.2.45-5.el7_0.4.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
x86_64:
bash-debuginfo-4.2.45-5.el7_0.4.x86_64.rpm
bash-doc-4.2.45-5.el7_0.4.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source:
bash-4.2.45-5.el7_0.4.src.rpm
ppc64:
bash-4.2.45-5.el7_0.4.ppc64.rpm
bash-debuginfo-4.2.45-5.el7_0.4.ppc64.rpm
s390x:
bash-4.2.45-5.el7_0.4.s390x.rpm
bash-debuginfo-4.2.45-5.el7_0.4.s390x.rpm
x86_64:
bash-4.2.45-5.el7_0.4.x86_64.rpm
bash-debuginfo-4.2.45-5.el7_0.4.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
ppc64:
bash-debuginfo-4.2.45-5.el7_0.4.ppc64.rpm
bash-doc-4.2.45-5.el7_0.4.ppc64.rpm
s390x:
bash-debuginfo-4.2.45-5.el7_0.4.s390x.rpm
bash-doc-4.2.45-5.el7_0.4.s390x.rpm
x86_64:
bash-debuginfo-4.2.45-5.el7_0.4.x86_64.rpm
bash-doc-4.2.45-5.el7_0.4.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source:
bash-4.2.45-5.el7_0.4.src.rpm
x86_64:
bash-4.2.45-5.el7_0.4.x86_64.rpm
bash-debuginfo-4.2.45-5.el7_0.4.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
x86_64:
bash-debuginfo-4.2.45-5.el7_0.4.x86_64.rpm
bash-doc-4.2.45-5.el7_0.4.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package
7. References:
https://www.redhat.com/security/data/cve/CVE-2014-7169.html
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/articles/1200223
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2014 Red Hat, Inc.
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