Message-ID: <442185D0.mailI2111ONCB@suse.de>
Date: Wed, 22 Mar 2006 18:13:52 +0100
From: Thomas Biege <thomas@...e.de>
To: bugtraq@...urityfocus.com
Subject: SUSE Security Announcement: sendmail remote code execution 
 (SUSE-SA:2006:017)



-----BEGIN PGP SIGNED MESSAGE-----

______________________________________________________________________________

                        SUSE Security Announcement

        Package:                sendmail
        Announcement ID:        SUSE-SA:2006:017
        Date:                   Wed, 22 Mar 2006 17:00:00 +0000
        Affected Products:      SUSE LINUX 10.0
                                SUSE LINUX 9.3
                                SUSE LINUX 9.2
                                SUSE LINUX 9.1
                                SuSE Linux Enterprise Server 8
                                SUSE SLES 9
                                UnitedLinux 1.0
        Vulnerability Type:     remote code execution
        Severity (1-10):        9
        SUSE Default Package:   yes
        Cross-References:       CVE-2006-0058
                                VU#834865

    Content of This Advisory:
        1) Security Vulnerability Resolved:
             sendmail 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:
        6) Authenticity Verification and Additional Information

______________________________________________________________________________

1) Problem Description and Brief Discussion

   The popular MTA sendmail is vulnerable to a race condition when handling
   signals.
   Under certain circumstances this bug can be exploited by an attacker to
   execute commands remotely.
   
   Sendmail was the default MTA in SuSE Linux Enterprise Server 8. Later
   products use postfix as MTA.
   
   Thanks to Mark Dowd who found this bug.

2) Solution or Work-Around

   There is no work-around known.

3) Special Instructions and Notes

   Please restart sendmail after the update.

4) Package Location and Checksums

   The preferred method for installing security updates is to use the YaST
   Online Update (YOU) tool. YOU detects which updates are required and
   automatically performs 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 <file.rpm>

   to apply the update, replacing <file.rpm> with the filename of the
   downloaded RPM package.

   
   x86 Platform:
   
   SUSE LINUX 10.0:
   ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/sendmail-8.13.4-8.3.i586.rpm
          06ab5c69929cb50f26f54588f66146b4
   
   SUSE LINUX 9.3:
   ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/sendmail-8.13.3-5.3.i586.rpm
          df6e12d411035bf7ab3ad996f92ac5cf
   
   SUSE LINUX 9.2:
   ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/sendmail-8.13.1-5.3.i586.rpm
          17c91fd6341147c689dc2cd7dc71d911
   
   SUSE LINUX 9.1:
   ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/sendmail-8.12.11-2.2.i586.rpm
          157dfa4779aff534e835215492697cbb
   
   Power PC Platform:
   
   SUSE LINUX 10.0:
   ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/sendmail-8.13.4-8.3.ppc.rpm
          12dc596559ab135dcc338d5783052fa3
   
   x86-64 Platform:
   
   SUSE LINUX 10.0:
   ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/sendmail-8.13.4-8.3.x86_64.rpm
          ef97f8861a09194962a73822cc9fc046
   
   SUSE LINUX 9.3:
   ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/sendmail-8.13.3-5.3.x86_64.rpm
          a3d0e0ee376a474039b03bcc4b5bf424
   
   SUSE LINUX 9.2:
   ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/sendmail-8.13.1-5.3.x86_64.rpm
          ade99a91173e0cc39d0c64c259bc7f33
   
   SUSE LINUX 9.1:
   ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/sendmail-8.12.11-2.2.x86_64.rpm
          14e8a55656f88e11a50d732379491922
   
   Sources:
   
   SUSE LINUX 10.0:
   ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/src/sendmail-8.13.4-8.3.src.rpm
          94722f948da4436d9b32abf3df26486d
   
   SUSE LINUX 9.3:
   ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/src/sendmail-8.13.3-5.3.src.rpm
          e75f7eb0d5aad94141e06a57701f8aa7
   
   SUSE LINUX 9.2:
   ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/src/sendmail-8.13.1-5.3.src.rpm
          30ea81965aafb0e7726c7c503ae6838a
   
   SUSE LINUX 9.1:
   ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/sendmail-8.12.11-2.2.src.rpm
          9fb0bc7806b56efe1049595cf3dbdd95
   ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/sendmail-8.12.11-2.2.src.rpm
          15db49b697c161e35c06115e352de985
   
   Our maintenance customers are notified individually. The packages are
   offered for installation from the maintenance web:
   
   http://support.novell.com/cgi-bin/search/searchtid.cgi?psdb/bf2c034812fe447a315793ab64ee5d6d.html

______________________________________________________________________________

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

   Please read our weekly summary advisory.
______________________________________________________________________________

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 <file>

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

      gpg: Signature made <DATE> using RSA key ID 3D25D3D9
      gpg: Good signature from "SuSE Security Team <security@...e.de>"

    where <DATE> 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.

    There are two verification methods that can be used independently from
    each other to prove the authenticity of a downloaded file or RPM package:

    1) Using the internal gpg signatures of the rpm package
    2) MD5 checksums as provided in this announcement

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

        rpm -v --checksig <file.rpm>

       to verify the signature of the package, replacing <file.rpm> with the
       filename of the RPM package downloaded. The package is unmodified if it
       contains a valid signature from build@...e.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.

    2) If you need an alternative means of verification, use the md5sum
       command to verify the authenticity of the packages. Execute the command

         md5sum <filename.rpm>

       after you downloaded the file from a SUSE FTP server or its mirrors.
       Then compare the resulting md5sum with the one that is listed in the
       SUSE security announcement. Because the announcement containing the
       checksums is cryptographically signed (by security@...e.de), the
       checksums show proof of the authenticity of the package if the
       signature of the announcement is valid. Note that the md5 sums
       published in the SUSE Security Announcements are valid for the
       respective packages only. Newer versions of these packages cannot be
       verified.

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

    suse-security@...e.com
        -   General Linux and SUSE security discussion.
            All SUSE security announcements are sent to this list.
            To subscribe, send an e-mail to
                <suse-security-subscribe@...e.com>.

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

    For general information or the frequently asked questions (FAQ),
    send mail to <suse-security-info@...e.com> or
    <suse-security-faq@...e.com>.

    =====================================================================
    SUSE's security contact is <security@...e.com> or <security@...e.de>.
    The <security@...e.de> public key is listed below.
    =====================================================================
______________________________________________________________________________

    The information in this advisory may be distributed or reproduced,
    provided that the advisory is not modified in any way. In particular, the
    clear text signature should show proof of the authenticity of the text.

    SUSE Linux Products GmbH provides no warranties of any kind whatsoever
    with respect to the information contained in this security advisory.

Type Bits/KeyID     Date       User ID
pub  2048R/3D25D3D9 1999-03-06 SuSE Security Team <security@...e.de>
pub  1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@...e.de>

- -----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v1.4.2 (GNU/Linux)
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=ypVs
- -----END PGP PUBLIC KEY BLOCK-----

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.2-rc1-SuSE (GNU/Linux)

iQEVAwUBRCGE6ney5gA9JdPZAQHogAgAlsg942iEL3UnmREuFTm2mlK5LMCE0RCX
aAN2skRe0voGd31dLHt+/OZtldQNCsF1ATtUDl8Gn69Y5kv3lrufpxEs3qtqMBx0
jqtkiB5oQd/WezDAzoLf0Wc8e0Ke/UaU7RsMHvbslFr0b60Ygv5Sz+HxQFx1U2Il
OldX5/ntIeIPrC3b+XeRCnFXYKBxHiEOX8QHk+68w5pGRn7xV6SZNTTdDGQ27hpX
ZKmW0eKtX/sbWR2S91L6yl4aNpwxhBXdB68SQspWeYxdA6oHrQpHXdzYCIYxqRZl
9Mdk1H9z88jAnltObSNAEmClM3LCZN49fJ3HXgaAh6awcd0Dj9V8sg==
=FYje
-----END PGP SIGNATURE-----

Powered by blists - more mailing lists