==================================================================== Red Hat Security Advisory Synopsis: Important: bash Shift_JIS security update Advisory ID: RHSA-2014:1865-01 Product: RHEL S-JIS Service Advisory URL: https://rhn.redhat.com/errata/RHSA-2014-1865.html Issue date: 2014-11-17 CVE Names: CVE-2014-7169 CVE-2014-7186 CVE-2014-7187 ==================================================================== 1. Summary: Updated bash Shift_JIS packages that fix one security issue are now available for Red Hat Enterprise Linux 5.9 Extended Update Support. 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: SJIS (v. 5.9.z Server) - i386, ia64, 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. 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. 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: SJIS (v. 5.9.z Server): Source: bash-3.2-32.el5_9.3.sjis.1.src.rpm i386: bash-3.2-32.el5_9.3.sjis.1.i386.rpm bash-debuginfo-3.2-32.el5_9.3.sjis.1.i386.rpm ia64: bash-3.2-32.el5_9.3.sjis.1.i386.rpm bash-3.2-32.el5_9.3.sjis.1.ia64.rpm bash-debuginfo-3.2-32.el5_9.3.sjis.1.i386.rpm bash-debuginfo-3.2-32.el5_9.3.sjis.1.ia64.rpm x86_64: bash-3.2-32.el5_9.3.sjis.1.x86_64.rpm bash-debuginfo-3.2-32.el5_9.3.sjis.1.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/ 7. References: https://access.redhat.com/security/cve/CVE-2014-7169 https://access.redhat.com/security/cve/CVE-2014-7186 https://access.redhat.com/security/cve/CVE-2014-7187 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/articles/1200223 8. Contact: The Red Hat security contact is
. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2014 Red Hat, Inc.