Critical CentOS bash Security Update

Metadata

critical
10.0
bash-3.2-33.el5.1.i386.rpm, bash-3.2-33.el5.1.src.rpm, bash-3.2-33.el5.1.x86_64.rpm, bash-4.1.2-15.el6_5.1.i686.rpm, bash-4.1.2-15.el6_5.1.src.rpm, bash-4.1.2-15.el6_5.1.x86_64.rpm, bash-4.2.45-5.el7_0.2.src.rpm, bash-4.2.45-5.el7_0.2.x86_64.rpm, bash-doc-4.1.2-15.el6_5.1.i686.rpm, bash-doc-4.1.2-15.el6_5.1.x86_64.rpm, bash-doc-4.2.45-5.el7_0.2.x86_64.rpm
CVE-2014-6271
rhn.redhat.com, lists.centos.org, lists.centos.org, lists.centos.org, lists.centos.org
2014-09-24
2017-07-27 19:07
ALAS-2014-418
CVE-2014-6271 bash
CVE-2014-6271
2017-04-01 19:08
2017-01-05 20:12

Description


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 Critical 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.

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.

A flaw was found in the way Bash evaluated certain specially crafted
environment variables. An attacker could 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-2014-6271)

For additional information on the CVE-2014-6271 flaw, refer to the
Knowledgebase article at https://access.redhat.com/articles/1200223

Red Hat would like to thank Stephane Chazelas for reporting this issue.

All bash users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue.
Please see https://www.redhat.com/footer/terms-of-use.html

Am I vulnerable?

The constraints below list the versions that this vulnerability is patched in, and versions that are unaffected. If a patch is ready but unrealeased, then it is pending.

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Affected package information

Release Package Patched in
5 bash bash-3.2-33.el5.1.src.rpm
bash bash-3.2-33.el5.1.x86_64.rpm
bash bash-3.2-33.el5.1.i386.rpm
6 bash bash-4.1.2-15.el6_5.1.x86_64.rpm
bash bash-4.1.2-15.el6_5.1.i686.rpm
bash bash-4.1.2-15.el6_5.1.src.rpm
bash-doc bash-doc-4.1.2-15.el6_5.1.i686.rpm
bash-doc bash-doc-4.1.2-15.el6_5.1.x86_64.rpm
7 bash bash-4.2.45-5.el7_0.2.src.rpm
bash bash-4.2.45-5.el7_0.2.x86_64.rpm
bash-doc bash-doc-4.2.45-5.el7_0.2.x86_64.rpm