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SuSE: 2010-059: exim Print E-mail
User Rating:      How can I rate this item?
Posted by Benjamin D. Thomas   
SuSE The unprivileged user exim is running as could tell the exim daemon to read a different config file and leverage that to escalate privileges to root (CVE-2010-4345). A buffer overflow in exim allowed remote attackers to execute [More...]
______________________________________________________________________________

                        SUSE Security Announcement

        Package:                exim
        Announcement ID:        SUSE-SA:2010:059
        Date:                   Mon, 13 Dec 2010 09:00:00 +0000
        Affected Products:      openSUSE 11.1
                                openSUSE 11.2
                                openSUSE 11.3
        Vulnerability Type:     remote code execution
        CVSS v2 Base Score:     7.5 (AV:N/AC:L/Au:N/C:P/I:P/A:P)
        SUSE Default Package:   no
        Cross-References:       CVE-2010-4344, CVE-2010-4345

    Content of This Advisory:
        1) Security Vulnerability Resolved:
             exim remote code execution
           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 unprivileged user exim is running as could tell the exim daemon
   to read a different config file and leverage that to escalate
   privileges to root (CVE-2010-4345).
   
   A buffer overflow in exim allowed remote attackers to execute
   arbitrary code (CVE-2010-4344). openSUSE 11.3 is not affected by
   this flaw.

2) Solution or Work-Around

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

3) Special Instructions and Notes

   Please close and restart all running instances of exim after the update.

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/exim-4.71-4.3.1.i586.rpm
   http://download.opensuse.org/update/11.3/rpm/i586/eximon-4.71-4.3.1.i586.rpm
   http://download.opensuse.org/update/11.3/rpm/i586/eximstats-html-4.71-4.3.1.i586.rpm
   
   openSUSE 11.2:
   http://download.opensuse.org/update/11.2/rpm/i586/exim-4.69-72.6.1.i586.rpm
   http://download.opensuse.org/update/11.2/rpm/i586/eximon-4.69-72.6.1.i586.rpm
   http://download.opensuse.org/update/11.2/rpm/i586/eximstats-html-4.69-72.6.1.i586.rpm
   
   openSUSE 11.1:
   http://download.opensuse.org/update/11.1/rpm/i586/exim-4.69-70.15.1.i586.rpm
   http://download.opensuse.org/update/11.1/rpm/i586/eximon-4.69-70.15.1.i586.rpm
   http://download.opensuse.org/update/11.1/rpm/i586/eximstats-html-4.69-70.15.1.i586.rpm
   
   Power PC Platform:
   
   openSUSE 11.1:
   http://download.opensuse.org/update/11.1/rpm/ppc/exim-4.69-70.15.1.ppc.rpm
   http://download.opensuse.org/update/11.1/rpm/ppc/eximon-4.69-70.15.1.ppc.rpm
   http://download.opensuse.org/update/11.1/rpm/ppc/eximstats-html-4.69-70.15.1.ppc.rpm
   
   x86-64 Platform:
   
   openSUSE 11.3:
   http://download.opensuse.org/update/11.3/rpm/x86_64/exim-4.71-4.3.1.x86_64.rpm
   http://download.opensuse.org/update/11.3/rpm/x86_64/eximon-4.71-4.3.1.x86_64.rpm
   http://download.opensuse.org/update/11.3/rpm/x86_64/eximstats-html-4.71-4.3.1.x86_64.rpm
   
   openSUSE 11.2:
   http://download.opensuse.org/update/11.2/rpm/x86_64/exim-4.69-72.6.1.x86_64.rpm
   http://download.opensuse.org/update/11.2/rpm/x86_64/eximon-4.69-72.6.1.x86_64.rpm
   http://download.opensuse.org/update/11.2/rpm/x86_64/eximstats-html-4.69-72.6.1.x86_64.rpm
   
   openSUSE 11.1:
   http://download.opensuse.org/update/11.1/rpm/x86_64/exim-4.69-70.15.1.x86_64.rpm
   http://download.opensuse.org/update/11.1/rpm/x86_64/eximon-4.69-70.15.1.x86_64.rpm
   http://download.opensuse.org/update/11.1/rpm/x86_64/eximstats-html-4.69-70.15.1.x86_64.rpm
   
   Sources:
   
   openSUSE 11.3:
   http://download.opensuse.org/update/11.3/rpm/src/exim-4.71-4.3.1.src.rpm
   
   openSUSE 11.2:
   http://download.opensuse.org/update/11.2/rpm/src/exim-4.69-72.6.1.src.rpm
   
   openSUSE 11.1:
   http://download.opensuse.org/update/11.1/rpm/src/exim-4.69-70.15.1.src.rpm

______________________________________________________________________________

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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