Red Hat: 2012:1097-01: glibc: Moderate Advisory

    Date18 Jul 2012
    CategoryRed Hat
    1423
    Posted ByJoe Shakespeare
    Updated glibc packages that fix one security issue and one bug are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having moderate [More...]
    =====================================================================
                       Red Hat Security Advisory
    
    Synopsis:          Moderate: glibc security and bug fix update
    Advisory ID:       RHSA-2012:1097-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://rhn.redhat.com/errata/RHSA-2012-1097.html
    Issue date:        2012-07-18
    CVE Names:         CVE-2012-3406 
    =====================================================================
    
    1. Summary:
    
    Updated glibc packages that fix one security issue and one bug are now
    available for Red Hat Enterprise Linux 5.
    
    The Red Hat Security Response Team has rated this update as having moderate
    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 Desktop (v. 5 client) - i386, x86_64
    
    3. Description:
    
    The glibc packages provide the standard C and standard math libraries used
    by multiple programs on the system. Without these libraries, the Linux
    system cannot function properly.
    
    It was discovered that the formatted printing functionality in glibc did
    not properly restrict the use of alloca(). This could allow an attacker to
    bypass FORTIFY_SOURCE protections and execute arbitrary code using a format
    string flaw in an application, even though these protections are expected
    to limit the impact of such flaws to an application abort. (CVE-2012-3406)
    
    This update also fixes the following bug:
    
    * If a file or a string was in the IBM-930 encoding, and contained the
    invalid multibyte character "0xffff", attempting to use iconv() (or the
    iconv command) to convert that file or string to another encoding, such as
    UTF-8, resulted in a segmentation fault. With this update, the conversion
    code for the IBM-930 encoding recognizes this invalid character and calls
    an error handler, rather than causing a segmentation fault. (BZ#837896)
    
    All users of glibc are advised to upgrade to these updated packages, which
    contain backported patches to fix these issues.
    
    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/knowledge/articles/11258
    
    5. Bugs fixed (http://bugzilla.redhat.com/):
    
    826943 - CVE-2012-3406 glibc: printf() unbound alloca() usage in case of positional parameters + many format specs
    
    6. Package List:
    
    Red Hat Enterprise Linux Desktop (v. 5 client):
    
    Source:
    ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/glibc-2.5-81.el5_8.4.src.rpm
    
    i386:
    glibc-2.5-81.el5_8.4.i386.rpm
    glibc-2.5-81.el5_8.4.i686.rpm
    glibc-common-2.5-81.el5_8.4.i386.rpm
    glibc-debuginfo-2.5-81.el5_8.4.i386.rpm
    glibc-debuginfo-2.5-81.el5_8.4.i686.rpm
    glibc-debuginfo-common-2.5-81.el5_8.4.i386.rpm
    glibc-devel-2.5-81.el5_8.4.i386.rpm
    glibc-headers-2.5-81.el5_8.4.i386.rpm
    glibc-utils-2.5-81.el5_8.4.i386.rpm
    nscd-2.5-81.el5_8.4.i386.rpm
    
    x86_64:
    glibc-2.5-81.el5_8.4.i686.rpm
    glibc-2.5-81.el5_8.4.x86_64.rpm
    glibc-common-2.5-81.el5_8.4.x86_64.rpm
    glibc-debuginfo-2.5-81.el5_8.4.i386.rpm
    glibc-debuginfo-2.5-81.el5_8.4.i686.rpm
    glibc-debuginfo-2.5-81.el5_8.4.x86_64.rpm
    glibc-debuginfo-common-2.5-81.el5_8.4.i386.rpm
    glibc-devel-2.5-81.el5_8.4.i386.rpm
    glibc-devel-2.5-81.el5_8.4.x86_64.rpm
    glibc-headers-2.5-81.el5_8.4.x86_64.rpm
    glibc-utils-2.5-81.el5_8.4.x86_64.rpm
    nscd-2.5-81.el5_8.4.x86_64.rpm
    
    Red Hat Enterprise Linux (v. 5 server):
    
    Source:
    ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/glibc-2.5-81.el5_8.4.src.rpm
    
    i386:
    glibc-2.5-81.el5_8.4.i386.rpm
    glibc-2.5-81.el5_8.4.i686.rpm
    glibc-common-2.5-81.el5_8.4.i386.rpm
    glibc-debuginfo-2.5-81.el5_8.4.i386.rpm
    glibc-debuginfo-2.5-81.el5_8.4.i686.rpm
    glibc-debuginfo-common-2.5-81.el5_8.4.i386.rpm
    glibc-devel-2.5-81.el5_8.4.i386.rpm
    glibc-headers-2.5-81.el5_8.4.i386.rpm
    glibc-utils-2.5-81.el5_8.4.i386.rpm
    nscd-2.5-81.el5_8.4.i386.rpm
    
    ia64:
    glibc-2.5-81.el5_8.4.i686.rpm
    glibc-2.5-81.el5_8.4.ia64.rpm
    glibc-common-2.5-81.el5_8.4.ia64.rpm
    glibc-debuginfo-2.5-81.el5_8.4.i686.rpm
    glibc-debuginfo-2.5-81.el5_8.4.ia64.rpm
    glibc-devel-2.5-81.el5_8.4.ia64.rpm
    glibc-headers-2.5-81.el5_8.4.ia64.rpm
    glibc-utils-2.5-81.el5_8.4.ia64.rpm
    nscd-2.5-81.el5_8.4.ia64.rpm
    
    ppc:
    glibc-2.5-81.el5_8.4.ppc.rpm
    glibc-2.5-81.el5_8.4.ppc64.rpm
    glibc-common-2.5-81.el5_8.4.ppc.rpm
    glibc-debuginfo-2.5-81.el5_8.4.ppc.rpm
    glibc-debuginfo-2.5-81.el5_8.4.ppc64.rpm
    glibc-devel-2.5-81.el5_8.4.ppc.rpm
    glibc-devel-2.5-81.el5_8.4.ppc64.rpm
    glibc-headers-2.5-81.el5_8.4.ppc.rpm
    glibc-utils-2.5-81.el5_8.4.ppc.rpm
    nscd-2.5-81.el5_8.4.ppc.rpm
    
    s390x:
    glibc-2.5-81.el5_8.4.s390.rpm
    glibc-2.5-81.el5_8.4.s390x.rpm
    glibc-common-2.5-81.el5_8.4.s390x.rpm
    glibc-debuginfo-2.5-81.el5_8.4.s390.rpm
    glibc-debuginfo-2.5-81.el5_8.4.s390x.rpm
    glibc-devel-2.5-81.el5_8.4.s390.rpm
    glibc-devel-2.5-81.el5_8.4.s390x.rpm
    glibc-headers-2.5-81.el5_8.4.s390x.rpm
    glibc-utils-2.5-81.el5_8.4.s390x.rpm
    nscd-2.5-81.el5_8.4.s390x.rpm
    
    x86_64:
    glibc-2.5-81.el5_8.4.i686.rpm
    glibc-2.5-81.el5_8.4.x86_64.rpm
    glibc-common-2.5-81.el5_8.4.x86_64.rpm
    glibc-debuginfo-2.5-81.el5_8.4.i386.rpm
    glibc-debuginfo-2.5-81.el5_8.4.i686.rpm
    glibc-debuginfo-2.5-81.el5_8.4.x86_64.rpm
    glibc-debuginfo-common-2.5-81.el5_8.4.i386.rpm
    glibc-devel-2.5-81.el5_8.4.i386.rpm
    glibc-devel-2.5-81.el5_8.4.x86_64.rpm
    glibc-headers-2.5-81.el5_8.4.x86_64.rpm
    glibc-utils-2.5-81.el5_8.4.x86_64.rpm
    nscd-2.5-81.el5_8.4.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-2012-3406.html
    https://access.redhat.com/security/updates/classification/#moderate
    
    8. Contact:
    
    The Red Hat security contact is .  More contact
    details at https://access.redhat.com/security/team/contact/
    
    Copyright 2012 Red Hat, Inc.
    
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