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SuSE Linux Advisory: openssl

Apr 04, 2003, 17:14 (0 Talkback[s])

____________________________________________________________________________

                        SuSE Security Announcement

        Package:                openssl
        Announcement-ID:        SuSE-SA:2003:024
        Date:                   Fri Apr  4 14:00:00 MEST 2003
        Affected products:      7.1, 7.2, 7.3, 8.0, 8.1
                                SuSE Linux Database Server
                                SuSE eMail Server III, 3.1
                                SuSE Firewall Adminhost VPN
                                SuSE Linux Admin-CD for Firewall
                                SuSE Firewall on CD 2 - VPN
                                SuSE Firewall on CD 2
                                SuSE Linux Live-CD for Firewall
                                SuSE Linux Connectivity Server
                                SuSE Linux Enterprise Server 7
                                SuSE Linux Enterprise Server 8
                                SuSE Linux Office Server
                                UnitedLinux 1.0
        Vulnerability Type:     remote private-key retrieval
        Severity (1-10):        5
        SuSE default package:   Yes
        Cross References:       http://www.openssl.org

    Content of this advisory:
        1) security vulnerability resolved: Remote timing attack and
           "Klima-Pokorny-Rosa" attack.
           problem description, discussion, solution and upgrade information
        2) pending vulnerabilities, solutions, workarounds:
             - glibc
             - vnc
        3) standard appendix (further information)

____________________________________________________________________________

1)  problem description, brief discussion, solution, upgrade information

    Researchers from the University of Stanford have discovered certain
    weaknesses in OpenSSL's RSA decryption algorithm. It allows remote
    attackers to compute the private RSA key of a server by observing
    its timing behavior. This bug has been fixed by enabling "RSA blinding",
    by default.
      Additionally an extension of the "Bleichenbacher attack" has been
    developed by Czech researchers against OpenSSL. This weakness has
    also been fixed.


    Please download the update package for your distribution and verify its
    integrity by the methods listed in section 3) of this announcement.
    Then, install the package using the command "rpm -Fhv file.rpm" to apply
    the update.
    Our maintenance customers are being notified individually. The packages
    are being offered to install from the maintenance web.

    i386 Intel Platform:

    SuSE-8.2:
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/openssl-0.9.6i-12.i586.rpm
      b418a2f73ab572f99f156335f3cd4ef4
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/openssl-devel-0.9.6i-12.i586.rpm
      d0539c626612c5fcd9b1e81e529dc3af
    patch rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/openssl-0.9.6i-12.i586.patch.rpm
      3c8a296170b34838db459a5aefc3e104
    patch rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/openssl-devel-0.9.6i-12.i586.patch.rpm
      8978902dde74da69f72c4ff93a90f1eb
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/openssl-0.9.6i-12.src.rpm
      6dfaa0788bcdcb99939890d4bbd62826

    SuSE-8.1:
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/openssl-0.9.6g-68.i586.rpm
      2ecce759f2806b5ab475877b0ccd1f6f
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/openssl-devel-0.9.6g-68.i586.rpm
      aa79f7f72e503393f8fa9c34290ab497
    patch rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/openssl-0.9.6g-68.i586.patch.rpm
      68e33f6f3f90234a599e7473262e4924
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/openssl-devel-0.9.6g-68.i586.patch.rpm
      07ee91826db414421ad2a5a1abe27191
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/openssl-0.9.6g-68.src.rpm
      177ff751ecf0e5e191b36e9df28479ee

    SuSE-8.0:
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/sec1/openssl-0.9.6c-85.i386.rpm
      fabc6f1768cb113555690dbc26b26779
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/d3/openssl-devel-0.9.6c-85.i386.rpm
      788751185ecf5c3538378de8f583c900
    patch rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/sec1/openssl-0.9.6c-85.i386.patch.rpm
      dc19ef5b07fcd32d060e8c6c0f11d3e1
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/d3/openssl-devel-0.9.6c-85.i386.patch.rpm
      0152c98bab2617456b7250431f37c41e
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/openssl-0.9.6c-85.src.rpm
      66080ca41e143339ef95d7dd0c4c19fe

    SuSE-7.3:
    ftp://ftp.suse.com/pub/suse/i386/update/7.3/sec1/openssl-0.9.6b-156.i386.rpm
      7da5bae86380a034312d69e745bb1bb5
    ftp://ftp.suse.com/pub/suse/i386/update/7.3/d2/openssl-devel-0.9.6b-156.i386.rpm
      d54d7948b2a5cce732971890f51520a3
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/7.3/zq1/openssl-0.9.6b-156.src.rpm
      13749156d3a6fd7597407a65bf2c527b

    SuSE-7.2:
    ftp://ftp.suse.com/pub/suse/i386/update/7.2/sec1/openssl-0.9.6a-82.i386.rpm
      105d9266ea2117bfa9643eb66441f39b
    ftp://ftp.suse.com/pub/suse/i386/update/7.2/d2/openssl-devel-0.9.6a-82.i386.rpm
      5d607333a4ddae3cb1e303a8afaf2f43
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/7.2/zq1/openssl-0.9.6a-82.src.rpm
      7a06275dda66ea2e9da6c76425439369

    SuSE-7.1:
    ftp://ftp.suse.com/pub/suse/i386/update/7.1/sec1/openssl-0.9.6a-81.i386.rpm
      8bb8ea69f878aa08331269bf3f38afa2
    ftp://ftp.suse.com/pub/suse/i386/update/7.1/d2/openssl-devel-0.9.6a-81.i386.rpm
      dede7c66740ab249de577e5699e8639f
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/7.1/zq1/openssl-0.9.6a-81.src.rpm
      07bc8370887abba6db3ace2d523eeade


    Sparc Platform:

    SuSE-7.3:
    ftp://ftp.suse.com/pub/suse/sparc/update/7.3/sec1/openssl-0.9.6b-89.sparc.rpm
      1391d007fdb5b99fd71aba949aeb0310
    ftp://ftp.suse.com/pub/suse/sparc/update/7.3/d2/openssl-devel-0.9.6b-89.sparc.rpm
      9f0ff708c016fd62d103cadbf3f6892e
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/sparc/update/7.3/zq1/openssl-0.9.6b-89.src.rpm
      fac800ccac7c5f2c3eb544f5a7bf0aea


    AXP Alpha Platform:

    SuSE-7.1:
    ftp://ftp.suse.com/pub/suse/axp/update/7.1/sec1/openssl-0.9.6a-31.alpha.rpm
      c8d02c071cee8f6d70d8a9bb26b010f2
    ftp://ftp.suse.com/pub/suse/axp/update/7.1/d2/openssl-devel-0.9.6a-31.alpha.rpm
      13cdfd1f3b35ee90a7d09240a2a3df40
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/axp/update/7.1/zq1/openssl-0.9.6a-31.src.rpm
      e64213b7b488d16de6152d94db9aaa99


    PPC Power PC Platform:

    SuSE-7.3:
    ftp://ftp.suse.com/pub/suse/ppc/update/7.3/sec1/openssl-0.9.6b-150.ppc.rpm
      cb2b6467cbad88c2ac4cecd889b2cb40
    ftp://ftp.suse.com/pub/suse/ppc/update/7.3/d2/openssl-devel-0.9.6b-150.ppc.rpm
      c11a579a40184ad6a108bfaa787b2038
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/ppc/update/7.3/zq1/openssl-0.9.6b-150.src.rpm
      889ea0f28304224329a37d12390e370b

    SuSE-7.1:
    ftp://ftp.suse.com/pub/suse/ppc/update/7.1/sec1/openssl-0.9.6a-31.ppc.rpm
      1694ef2f2018cfcdd4a4bab97d21978b
    ftp://ftp.suse.com/pub/suse/ppc/update/7.1/d2/openssl-devel-0.9.6a-31.ppc.rpm
      f1b6838c46f3775d4ee6c51714247cb1
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/ppc/update/7.1/zq1/openssl-0.9.6a-31.src.rpm
      5a8af3aa4592efba1194518b9a50253e


____________________________________________________________________________

2)  Pending vulnerabilities in SuSE Distributions and Workarounds:

    - glibc
    New glibc packages will be available soon which fix a RPC XDR integer
    overflow. The packages are currently being tested.

    - vnc
    VNC (Virtual Network Computing) uses a weak cookie generation process
    which can be exploited by an attacker to bypass authentication.
    New packages are currently being tested and will be available on our
    FTP servers soon.

____________________________________________________________________________

3)  standard appendix: authenticity verification, additional information

  - Package authenticity verification:

    SuSE update packages are available on many mirror ftp servers all over
    the world. While this service is being considered valuable and important
    to the free and open source software community, many users wish to be
    sure about the origin of the package and its content before installing
    the package. 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) md5sums as provided in the (cryptographically signed) announcement.
    2) using the internal gpg signatures of the rpm package.

    1) execute the command
        md5sum 
       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
       announcement. Since the announcement containing the checksums is
       cryptographically signed (usually using the key security@suse.de),
       the checksums show proof of the authenticity of the package.
       We disrecommend to subscribe to security lists which cause the
       email message containing the announcement to be modified so that
       the signature does not match after transport through the mailing
       list software.
       Downsides: You must be able to verify the authenticity of the
       announcement in the first place. If RPM packages are being rebuilt
       and a new version of a package is published on the ftp server, all
       md5 sums for the files are useless.

    2) 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, where  is the
       filename of the rpm package that you have downloaded. Of course,
       package authenticity verification can only target an un-installed rpm
       package file.
       Prerequisites:
        a) gpg is installed
        b) The package is signed using a certain key. The public part of this
           key must be installed by the gpg program in the directory
           ~/.gnupg/ under the user's home directory who performs the
           signature verification (usually root). You can import the key
           that is used by SuSE in rpm packages for SuSE Linux by saving
           this announcement to a file ("announcement.txt") and
           running the command (do "su -" to be root):
            gpg --batch; gpg < announcement.txt | gpg --import
           SuSE Linux distributions version 7.1 and thereafter install the
           key "build@suse.de" upon installation or upgrade, provided that
           the package gpg is installed. The file containing the public key
           is placed at the top-level directory of the first CD (pubring.gpg)
           and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de .


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

    suse-security@suse.com
        -   general/linux/SuSE security discussion.
            All SuSE security announcements are sent to this list.
            To subscribe, send an email to
                <<A HREF="mailto:suse-security-subscribe@suse.com">suse-security-subscribe@suse.com>.

    suse-security-announce@suse.com
        -   SuSE's announce-only mailing list.
            Only SuSE's security announcements are sent to this list.
            To subscribe, send an email to
                <<A HREF="mailto:suse-security-announce-subscribe@suse.com">suse-security-announce-subscribe@suse.com>.

    For general information or the frequently asked questions (faq)
    send mail to:
        <<A HREF="mailto:suse-security-info@suse.com">suse-security-info@suse.com> or
        <<A HREF="mailto:suse-security-faq@suse.com">suse-security-faq@suse.com> respectively.

    =====================================================================
    SuSE's security contact is <<A HREF="mailto:security@suse.com">security@suse.com> or <<A HREF="mailto:security@suse.de">security@suse.de>.
    The <<A HREF="mailto:security@suse.de">security@suse.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,
    it is desired that the clear-text signature shows proof of the
    authenticity of the text.
    SuSE Linux AG makes 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 <<A HREF="mailto:security@suse.de">security@suse.de>
pub  1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <<A HREF="mailto:build@suse.de">build@suse.de>