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Red Hat Product Errata RHSA-2014:1312 - Security Advisory
Issued:
2014-09-26
Updated:
2014-09-30

RHSA-2014:1312 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: bash Shift_JIS security update

Type/Severity

Security Advisory: Important

Topic

[Updated September 30, 2014]
This advisory has been updated with information on restarting system
services after applying this update. No changes have been made to the
original packages.

Updated bash Shift_JIS packages that fix one security issue are now
available for Red Hat Enterprise Linux 5 and 6.

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.

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.

Shift_JIS, also known as "SJIS", is a character encoding for the Japanese
language. This package provides bash support for the Shift_JIS encoding.

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. Note that certain services, screen sessions, and tmux sessions may
need to be restarted, and affected interactive users may need to re-login.
Installing these updated packages without restarting services will address
the vulnerability, but functionality may be impacted until affected
services are restarted. 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 users who require Shift_JIS encoding support with Bash built-in
functions are advised to upgrade to these updated packages, which contain a
backported patch to correct this issue.

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

Affected Products

  • Red Hat S-JIS Support (for RHEL Server) 6 x86_64
  • Red Hat S-JIS Support (for RHEL Server) 6 i386
  • Red Hat S-JIS Support (for RHEL Server) 5 x86_64
  • Red Hat S-JIS Support (for RHEL Server) 5 ia64
  • Red Hat S-JIS Support (for RHEL Server) 5 i386

Fixes

  • BZ - 1146319 - CVE-2014-7169 bash: code execution via specially-crafted environment (Incomplete fix for CVE-2014-6271)

CVEs

  • CVE-2014-7169
  • CVE-2014-7186
  • CVE-2014-7187

References

  • https://access.redhat.com/security/updates/classification/#important
  • https://access.redhat.com/articles/1200223
Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat S-JIS Support (for RHEL Server) 6

SRPM
bash-4.1.2-15.el6_5.1.sjis.2.src.rpm SHA-256: d1a4ec83022ba39600c708da646dfa307e51f6b07caf3bc98478c56a70776bd4
x86_64
bash-4.1.2-15.el6_5.1.sjis.2.x86_64.rpm SHA-256: 2d3e2f65b11f8c290981b343954959bc8d5a30329350be4e59b05b9d9e34baad
bash-debuginfo-4.1.2-15.el6_5.1.sjis.2.x86_64.rpm SHA-256: 257c26cc29c17c25bd1a2c48aecd22bf0476ea87d63441e61520df5b5d4b0e5f
bash-doc-4.1.2-15.el6_5.1.sjis.2.x86_64.rpm SHA-256: 81cf6a10afb22ae23a778cf3004f388019f4be70971759c51e79c47364b87e48
i386
bash-4.1.2-15.el6_5.1.sjis.2.i686.rpm SHA-256: 1501dbffb6ed9dfe4baf026736b86e24745498a5f08a98939596583794937988
bash-debuginfo-4.1.2-15.el6_5.1.sjis.2.i686.rpm SHA-256: 7f94c67273b681116c82904f7d0844f2071006e842f15ba6e1f73b181ac16c2c
bash-doc-4.1.2-15.el6_5.1.sjis.2.i686.rpm SHA-256: c0adb5167aa544537fe0054ee213fe8217b7f50c66b72a211d1d188726978d0c

Red Hat S-JIS Support (for RHEL Server) 5

SRPM
bash-3.2-33.el5_11.1.sjis.2.src.rpm SHA-256: 50268de7e45894c66f7bac34cddfb8dee9dad22a9a5e0e65741e804094467512
x86_64
bash-3.2-33.el5_11.1.sjis.2.x86_64.rpm SHA-256: 225cbdc4ac4165fb4342dfcb22684ff5f48bb3d5b26177659b9ae892b5f596c4
bash-debuginfo-3.2-33.el5_11.1.sjis.2.x86_64.rpm SHA-256: aef61ed793d078623271a15de58700b4d73c22013cd7412848991bad6a89784b
ia64
bash-3.2-33.el5_11.1.sjis.2.i386.rpm SHA-256: 75c6215c716b0fc3ff02b02f64a361a1f8fdec56125647f44cf801bb4dcf4be2
bash-3.2-33.el5_11.1.sjis.2.ia64.rpm SHA-256: 40d059cba800ed5b3394c1c22a578fa82e6d630dbb84b81741591e4a9836e9e4
bash-debuginfo-3.2-33.el5_11.1.sjis.2.i386.rpm SHA-256: 74004701c15f6e64a0c91ea12c9924e4ff626274d85616c47c9d6f42cc824dbe
bash-debuginfo-3.2-33.el5_11.1.sjis.2.ia64.rpm SHA-256: 426c9410e24beaedb95338c3f0b46f593b9416ceed22470efc4912b92cf67944
i386
bash-3.2-33.el5_11.1.sjis.2.i386.rpm SHA-256: 75c6215c716b0fc3ff02b02f64a361a1f8fdec56125647f44cf801bb4dcf4be2
bash-debuginfo-3.2-33.el5_11.1.sjis.2.i386.rpm SHA-256: 74004701c15f6e64a0c91ea12c9924e4ff626274d85616c47c9d6f42cc824dbe

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.

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