Red Hat: 2014:1865-01: bash Shift_JIS: Important Advisory

    Date17 Nov 2014
    1088
    Posted ByJoe Shakespeare
    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 [More...]
    =====================================================================
                       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.
    

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