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SuSE: 2010-052: glibc Print E-mail
User Rating:      How can I rate this item?
Posted by Benjamin D. Thomas   
SuSE The Linux C library glibc was updated to fix critical security issues and several bugs: CVE-2010-3847: Decoding of the $ORIGIN special value in various LD_ environment variables allowed local attackers to execute code in context of e.g. setuid root programs, elevating privileges. This specific issue did not affect SUSE as an assertion triggers [More...]
______________________________________________________________________________

                        SUSE Security Announcement

        Package:                glibc
        Announcement ID:        SUSE-SA:2010:052
        Date:                   Thu, 28 Oct 2010 09:00:00 +0000
        Affected Products:      openSUSE 11.1
                                openSUSE 11.2
                                openSUSE 11.3
                                SLE SDK 10 SP3
                                SUSE Linux Enterprise Desktop 10 SP3
                                SUSE Linux Enterprise Server 10 SP3
                                SUSE Linux Enterprise Software Development Kit 11
                                SUSE Linux Enterprise Desktop 11
                                SUSE Linux Enterprise Server 11
                                SUSE Linux Enterprise Software Development Kit 11 SP1
                                SUSE Linux Enterprise Desktop 11 SP1
                                SUSE Linux Enterprise Server 11 SP1
        Vulnerability Type:     local privilege escalation
        CVSS v2 Base Score:     7.2 (AV:L/AC:L/Au:N/C:C/I:C/A:C)
        SUSE Default Package:   yes
        Cross-References:       CVE-2008-1391, CVE-2010-0015, CVE-2010-0296
                                CVE-2010-0830, CVE-2010-3847, CVE-2010-3856

    Content of This Advisory:
        1) Security Vulnerability Resolved:
             glibc local privilege escalation problem
           Problem Description
        2) Solution or Work-Around
        3) Special Instructions and Notes
        4) Package Location and Checksums
        5) Pending Vulnerabilities, Solutions, and Work-Arounds:
            See SUSE Security Summary Report.
        6) Authenticity Verification and Additional Information

______________________________________________________________________________

1) Problem Description and Brief Discussion

   The Linux C library glibc was updated to fix critical security issues and several bugs:

   CVE-2010-3847: Decoding of the $ORIGIN special value in various LD_
   environment variables allowed local attackers to execute code in
   context of e.g. setuid root programs, elevating privileges.
   This specific issue did not affect SUSE as an assertion triggers
   before the respective code is executed. The bug was fixed by this
   update nevertheless.

   CVE-2010-3856: The LD_AUDIT environment was not pruned during setuid
   root execution and could load shared libraries from standard system
   library paths.
   This could be used by local attackers to inject code into setuid root
   programs and so elevated privileges.

   Both of these were found by Tavis Ormandy and we thank him for finding
   and reporting those issues.



   SUSE Linux Enterprise Server 9 is not affected by the above problems,
   as its glibc does neither support LD_AUDIT nor the $ORIGIN expansion
   required by the first problem.

   On openSUSE 11.1, 11.2 and SUSE Linux Enterprise 10 Service Pack 3
   and SUSE Linux Enterprise 11 GA also the following minor security
   issues were fixed:

   CVE-2010-0830: Integer overflow causing arbitrary code execution
   in ld.so --verify mode could be induced by a specially crafted
   binary. This would require running the code on untrusted code which
   we did not consider likely.

   We thank Dan Rosenberg for reporting this problem.

   CVE-2010-0296: The addmntent() function would not escape the newline
   character properly, allowing the user to insert arbitrary newlines
   to the /etc/mtab; if the addmntent() is run by a setuid mount binary
   that does not do extra input check, this would allow custom entries
   to be inserted in /etc/mtab.

   We thank Dan Rosenberg and Jeff Layton for reporting this problem.


   CVE-2008-1391: The strfmon() function contains an integer overflow
   vulnerability in width specifiers handling that could be triggered
   by an attacker that can control the format string passed to strfmon().

   We thank Maksymilian Arciemowicz for reporting this problem.


   CVE-2010-0015: Some setups (mainly Solaris-based legacy setups)
   include shadow information (password hashes) as so-called "adjunct
   passwd" table, mangling it with the rest of passwd columns instead
   of keeping it in the shadow table. Normally, Solaris will disclose
   this information only to clients bound to a privileged port, but
   when nscd is deployed on the client, getpwnam() would disclose the
   password hashes to all users.  New mode "adjunct as shadow" can now
   be enabled in /etc/default/nss that will move the password hashes
   from the world-readable passwd table to emulated shadow table (that
   is not cached by nscd).

   We thank Christoph Pleger for reporting this problem.

2) Solution or Work-Around

   There is no known workaround, please install the update packages.

3) Special Instructions and Notes

   A reboot is not required to activate this change.

   However as old processes will still be using the old C library, a reboot
   is at least recommended.
4) Package Location and Checksums

   The preferred method for installing security updates is to use the YaST
   "Online Update" module or the "zypper" commandline tool. The package and
   patch management stack will detect which updates are required and
   automatically perform the necessary steps to verify and install them.

   Alternatively, download the update packages for your distribution manually
   and verify their integrity by the methods listed in Section 6 of this
   announcement. Then install the packages using the command

     rpm -Fhv 

   to apply the update, replacing  with the filename of the
   downloaded RPM package.


   x86 Platform:

   openSUSE 11.3:
   http://download.opensuse.org/update/11.3/rpm/i586/glibc-2.11.2-3.3.1.i586.rpm
   http://download.opensuse.org/update/11.3/rpm/i586/glibc-devel-2.11.2-3.3.1.i586.rpm
   http://download.opensuse.org/update/11.3/rpm/i586/glibc-html-2.11.2-3.3.1.i586.rpm
   http://download.opensuse.org/update/11.3/rpm/i586/glibc-i18ndata-2.11.2-3.3.1.i586.rpm
   http://download.opensuse.org/update/11.3/rpm/i586/glibc-info-2.11.2-3.3.1.i586.rpm
   http://download.opensuse.org/update/11.3/rpm/i586/glibc-locale-2.11.2-3.3.1.i586.rpm
   http://download.opensuse.org/update/11.3/rpm/i586/glibc-obsolete-2.11.2-3.3.1.i586.rpm
   http://download.opensuse.org/update/11.3/rpm/i586/glibc-profile-2.11.2-3.3.1.i586.rpm
   http://download.opensuse.org/update/11.3/rpm/i586/nscd-2.11.2-3.3.1.i586.rpm

   openSUSE 11.2:
   http://download.opensuse.org/update/11.2/rpm/i586/glibc-2.10.1-10.9.1.i586.rpm
   http://download.opensuse.org/update/11.2/rpm/i586/glibc-devel-2.10.1-10.9.1.i586.rpm
   http://download.opensuse.org/update/11.2/rpm/i586/glibc-html-2.10.1-10.9.1.i586.rpm
   http://download.opensuse.org/update/11.2/rpm/i586/glibc-i18ndata-2.10.1-10.9.1.i586.rpm
   http://download.opensuse.org/update/11.2/rpm/i586/glibc-info-2.10.1-10.9.1.i586.rpm
   http://download.opensuse.org/update/11.2/rpm/i586/glibc-locale-2.10.1-10.9.1.i586.rpm
   http://download.opensuse.org/update/11.2/rpm/i586/glibc-obsolete-2.10.1-10.9.1.i586.rpm
   http://download.opensuse.org/update/11.2/rpm/i586/glibc-profile-2.10.1-10.9.1.i586.rpm
   http://download.opensuse.org/update/11.2/rpm/i586/nscd-2.10.1-10.9.1.i586.rpm

   openSUSE 11.1:
   http://download.opensuse.org/update/11.1/rpm/i586/glibc-2.9-2.13.1.i586.rpm
   http://download.opensuse.org/update/11.1/rpm/i586/glibc-devel-2.9-2.13.1.i586.rpm
   http://download.opensuse.org/update/11.1/rpm/i586/glibc-html-2.9-2.13.1.i586.rpm
   http://download.opensuse.org/update/11.1/rpm/i586/glibc-i18ndata-2.9-2.13.1.i586.rpm
   http://download.opensuse.org/update/11.1/rpm/i586/glibc-info-2.9-2.13.1.i586.rpm
   http://download.opensuse.org/update/11.1/rpm/i586/glibc-locale-2.9-2.13.1.i586.rpm
   http://download.opensuse.org/update/11.1/rpm/i586/glibc-obsolete-2.9-2.13.1.i586.rpm
   http://download.opensuse.org/update/11.1/rpm/i586/glibc-profile-2.9-2.13.1.i586.rpm
   http://download.opensuse.org/update/11.1/rpm/i586/nscd-2.9-2.13.1.i586.rpm

   x86 Platform:

   openSUSE 11.3:
   http://download.opensuse.org/update/11.3/rpm/i686/glibc-2.11.2-3.3.1.i686.rpm
   http://download.opensuse.org/update/11.3/rpm/i686/glibc-devel-2.11.2-3.3.1.i686.rpm

   openSUSE 11.2:
   http://download.opensuse.org/update/11.2/rpm/i686/glibc-2.10.1-10.9.1.i686.rpm
   http://download.opensuse.org/update/11.2/rpm/i686/glibc-devel-2.10.1-10.9.1.i686.rpm

   openSUSE 11.1:
   http://download.opensuse.org/update/11.1/rpm/i686/glibc-2.9-2.13.1.i686.rpm
   http://download.opensuse.org/update/11.1/rpm/i686/glibc-devel-2.9-2.13.1.i686.rpm
   http://download.opensuse.org/update/11.1/rpm/i686/glibc-html-2.9-2.13.1.i686.rpm
   http://download.opensuse.org/update/11.1/rpm/i686/glibc-i18ndata-2.9-2.13.1.i686.rpm
   http://download.opensuse.org/update/11.1/rpm/i686/glibc-info-2.9-2.13.1.i686.rpm
   http://download.opensuse.org/update/11.1/rpm/i686/glibc-locale-2.9-2.13.1.i686.rpm
   http://download.opensuse.org/update/11.1/rpm/i686/glibc-obsolete-2.9-2.13.1.i686.rpm
   http://download.opensuse.org/update/11.1/rpm/i686/glibc-profile-2.9-2.13.1.i686.rpm
   http://download.opensuse.org/update/11.1/rpm/i686/nscd-2.9-2.13.1.i686.rpm

   Power PC Platform:

   openSUSE 11.1:
   http://download.opensuse.org/update/11.1/rpm/ppc/glibc-2.9-2.13.1.ppc.rpm
   http://download.opensuse.org/update/11.1/rpm/ppc/glibc-64bit-2.9-2.13.1.ppc.rpm
   http://download.opensuse.org/update/11.1/rpm/ppc/glibc-devel-2.9-2.13.1.ppc.rpm
   http://download.opensuse.org/update/11.1/rpm/ppc/glibc-devel-64bit-2.9-2.13.1.ppc.rpm
   http://download.opensuse.org/update/11.1/rpm/ppc/glibc-html-2.9-2.13.1.ppc.rpm
   http://download.opensuse.org/update/11.1/rpm/ppc/glibc-i18ndata-2.9-2.13.1.ppc.rpm
   http://download.opensuse.org/update/11.1/rpm/ppc/glibc-info-2.9-2.13.1.ppc.rpm
   http://download.opensuse.org/update/11.1/rpm/ppc/glibc-locale-2.9-2.13.1.ppc.rpm
   http://download.opensuse.org/update/11.1/rpm/ppc/glibc-locale-64bit-2.9-2.13.1.ppc.rpm
   http://download.opensuse.org/update/11.1/rpm/ppc/glibc-obsolete-2.9-2.13.1.ppc.rpm
   http://download.opensuse.org/update/11.1/rpm/ppc/glibc-profile-2.9-2.13.1.ppc.rpm
   http://download.opensuse.org/update/11.1/rpm/ppc/glibc-profile-64bit-2.9-2.13.1.ppc.rpm
   http://download.opensuse.org/update/11.1/rpm/ppc/nscd-2.9-2.13.1.ppc.rpm

   x86-64 Platform:

   openSUSE 11.3:
   http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-2.11.2-3.3.1.x86_64.rpm
   http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-32bit-2.11.2-3.3.1.x86_64.rpm
   http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-devel-2.11.2-3.3.1.x86_64.rpm
   http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-devel-32bit-2.11.2-3.3.1.x86_64.rpm
   http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-html-2.11.2-3.3.1.x86_64.rpm
   http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-i18ndata-2.11.2-3.3.1.x86_64.rpm
   http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-info-2.11.2-3.3.1.x86_64.rpm
   http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-locale-2.11.2-3.3.1.x86_64.rpm
   http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-locale-32bit-2.11.2-3.3.1.x86_64.rpm
   http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-obsolete-2.11.2-3.3.1.x86_64.rpm
   http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-profile-2.11.2-3.3.1.x86_64.rpm
   http://download.opensuse.org/update/11.3/rpm/x86_64/glibc-profile-32bit-2.11.2-3.3.1.x86_64.rpm
   http://download.opensuse.org/update/11.3/rpm/x86_64/nscd-2.11.2-3.3.1.x86_64.rpm

   openSUSE 11.2:
   http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-2.10.1-10.9.1.x86_64.rpm
   http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-32bit-2.10.1-10.9.1.x86_64.rpm
   http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-devel-2.10.1-10.9.1.x86_64.rpm
   http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-devel-32bit-2.10.1-10.9.1.x86_64.rpm
   http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-html-2.10.1-10.9.1.x86_64.rpm
   http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-i18ndata-2.10.1-10.9.1.x86_64.rpm
   http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-info-2.10.1-10.9.1.x86_64.rpm
   http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-locale-2.10.1-10.9.1.x86_64.rpm
   http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-locale-32bit-2.10.1-10.9.1.x86_64.rpm
   http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-obsolete-2.10.1-10.9.1.x86_64.rpm
   http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-profile-2.10.1-10.9.1.x86_64.rpm
   http://download.opensuse.org/update/11.2/rpm/x86_64/glibc-profile-32bit-2.10.1-10.9.1.x86_64.rpm
   http://download.opensuse.org/update/11.2/rpm/x86_64/nscd-2.10.1-10.9.1.x86_64.rpm

   openSUSE 11.1:
   http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-2.9-2.13.1.x86_64.rpm
   http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-32bit-2.9-2.13.1.x86_64.rpm
   http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-devel-2.9-2.13.1.x86_64.rpm
   http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-devel-32bit-2.9-2.13.1.x86_64.rpm
   http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-html-2.9-2.13.1.x86_64.rpm
   http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-i18ndata-2.9-2.13.1.x86_64.rpm
   http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-info-2.9-2.13.1.x86_64.rpm
   http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-locale-2.9-2.13.1.x86_64.rpm
   http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-locale-32bit-2.9-2.13.1.x86_64.rpm
   http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-obsolete-2.9-2.13.1.x86_64.rpm
   http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-profile-2.9-2.13.1.x86_64.rpm
   http://download.opensuse.org/update/11.1/rpm/x86_64/glibc-profile-32bit-2.9-2.13.1.x86_64.rpm
   http://download.opensuse.org/update/11.1/rpm/x86_64/nscd-2.9-2.13.1.x86_64.rpm

   Sources:

   openSUSE 11.3:
   http://download.opensuse.org/update/11.3/rpm/src/glibc-2.11.2-3.3.1.nosrc.rpm
   http://download.opensuse.org/update/11.3/rpm/src/glibc-2.11.2-3.3.1.src.rpm

   openSUSE 11.2:
   http://download.opensuse.org/update/11.2/rpm/src/glibc-2.10.1-10.9.1.nosrc.rpm
   http://download.opensuse.org/update/11.2/rpm/src/glibc-2.10.1-10.9.1.src.rpm

   openSUSE 11.1:
   http://download.opensuse.org/update/11.1/rpm/src/glibc-2.9-2.13.1.src.rpm

   Our maintenance customers are notified individually. The packages are
   offered for installation from the maintenance web:

   SLE SDK 10 SP3
     http://download.novell.com/patch/finder/?keywords=a7e1bffd1e2cae6bb5c9bbff3d3f9de2

   SUSE Linux Enterprise Server 10 SP3
     http://download.novell.com/patch/finder/?keywords=a7e1bffd1e2cae6bb5c9bbff3d3f9de2

   SUSE Linux Enterprise Desktop 10 SP3
     http://download.novell.com/patch/finder/?keywords=a7e1bffd1e2cae6bb5c9bbff3d3f9de2

   SUSE Linux Enterprise Server 11
     http://download.novell.com/patch/finder/?keywords=5f11ad23d76a12882072f1f4032fd9a4
     http://download.novell.com/patch/finder/?keywords=0582518152cdc4496cbc5acb4f10c30c

   SUSE Linux Enterprise Desktop 11
     http://download.novell.com/patch/finder/?keywords=0582518152cdc4496cbc5acb4f10c30c

   SUSE Linux Enterprise Software Development Kit 11
     http://download.novell.com/patch/finder/?keywords=0582518152cdc4496cbc5acb4f10c30c

   SUSE Linux Enterprise Server 11 SP1
     http://download.novell.com/patch/finder/?keywords=23bdb7f8171760d0a927cc00885b6d96

   SUSE Linux Enterprise Desktop 11 SP1
     http://download.novell.com/patch/finder/?keywords=23bdb7f8171760d0a927cc00885b6d96

   SUSE Linux Enterprise Software Development Kit 11 SP1
     http://download.novell.com/patch/finder/?keywords=23bdb7f8171760d0a927cc00885b6d96

______________________________________________________________________________

5) Pending Vulnerabilities, Solutions, and Work-Arounds:

   See SUSE Security Summary Report.
______________________________________________________________________________

6) Authenticity Verification and Additional Information

  - Announcement authenticity verification:

    SUSE security announcements are published via mailing lists and on Web
    sites. The authenticity and integrity of a SUSE security announcement is
    guaranteed by a cryptographic signature in each announcement. All SUSE
    security announcements are published with a valid signature.

    To verify the signature of the announcement, save it as text into a file
    and run the command

      gpg --verify 

    replacing  with the name of the file where you saved the
    announcement. The output for a valid signature looks like:

      gpg: Signature made  using RSA key ID 3D25D3D9
      gpg: Good signature from "SuSE Security Team "

    where  is replaced by the date the document was signed.

    If the security team's key is not contained in your key ring, you can
    import it from the first installation CD. To import the key, use the
    command

      gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc

  - Package authenticity verification:

    SUSE update packages are available on many mirror FTP servers all over the
    world. While this service is considered valuable and important to the free
    and open source software community, the authenticity and the integrity of
    a package needs to be verified to ensure that it has not been tampered
    with.

    The internal rpm package signatures provide an easy way to verify the
    authenticity of an RPM package. Use the command

     rpm -v --checksig 

    to verify the signature of the package, replacing  with the
    filename of the RPM package downloaded. The package is unmodified if it
    contains a valid signature from build@suse.de with the key ID 9C800ACA.

    This key is automatically imported into the RPM database (on
    RPMv4-based distributions) and the gpg key ring of 'root' during
    installation. You can also find it on the first installation CD and at
    the end of this announcement.

  - SUSE runs two security mailing lists to which any interested party may
    subscribe:

    opensuse-security@opensuse.org
        -   General Linux and SUSE security discussion.
            All SUSE security announcements are sent to this list.
            To subscribe, send an e-mail to
                .

    opensuse-security-announce@opensuse.org
        -   SUSE's announce-only mailing list.
            Only SUSE's security announcements are sent to this list.
            To subscribe, send an e-mail to
                .

    =====================================================================
    SUSE's security contact is  or .
    The  public key is listed below.
    =====================================================================
______________________________________________________________________________
 
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