______________________________________________________________________________

                        SuSE Security Announcement

        Package:                squid
        Announcement-ID:        SuSE-SA:2002:008
        Date:                   Mon Mar  5 13:00:00 CET 2002
        Affected SuSE products: 6.4, 7.0, 7.1, 7.2, 7.3,
                                Enterprise Server 7
        Vulnerability Type:     remote command execution
        Severity (1-10):        6
        SuSE default package:   no
        Other affected systems: all systems running vulnerable squid

    Content of this advisory:
        1) security vulnerability resolved: Heap overflow in squid.
           problem description, discussion, solution and upgrade information
        2) pending vulnerabilities, solutions, workarounds
        3) standard appendix (further information)

______________________________________________________________________________

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

    The widely used proxy-server squid contains a heap overflow in one of its
    URL constructing functions. Incorrect length-calculations for the user and
    passwd fields in ftp-URLs turned out to be the origin of the problem. Only
    users from hosts listed in squids ACL-files could trigger the overflow.
    The ftp-URL problem is not present in the 6.4, 7.0 and 7.1 distributions,
    but other security releated bugs have been fixed there.
    A complete history can be found at

       Squid-2.4 Patches

    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. For users of our SLES-based products, please use the yast
    online update.

    For the updates to take effect, invoke the following command as root:

      /etc/rc.d/squid restart

    If you added the htcp_port directive to your squid configuration file
    you might now see a warning in the logs about that directive being
    unrecognized. While this does not prevent squid from starting, you can
    safely remove the directive from squid.conf since HTCP support is
    disabled now.

    Please note that there are two binary and two source packages for almost
    every distribution available.


    i386 Intel Platform:

    SuSE-7.3
      
      4b1cff53fddcaf8930ec6738c6763a94
      
      4ca7f3594ec82b703c6c36c08fb46ecb
    source rpm:
      
      3751569a6c0ea21057d37cb7d3ca9076
      
      99f33e8d1e5b8a3e8d7f6501d26c6e67

    SuSE-7.2
      
      1f098dcb1020df788cc912d88f14bb96
      
      cc136eeaf6ed4ac305e93d306e6f7461
    source rpm:
      
      d3fae41b9128f73a0e457376bfb7a5c1
      
      c24bf7c45b227b06ae1013dd6fcb9d92

    SuSE-7.1
      
      5a7b26c99855837331e2d375901a5fce
      
      f3a4a2e8d9fa4b56948e8a8d2bc6e2a0
    source rpm:
      
      6c208e3f13da8d93fecfdca62c98f46f
      
      ad588c92719bffbc02e72fddf6195dd2

    SuSE-7.0
      
      f12ae33fd707f4ea86a48a77f48fafc8
      
      069c07843355ee473b8b4e10b6726455
    source rpm:
      
      5a2a5f0511cfd75f736ef485bcf6e5a1
      
      d4bc56dc9240f5ab9582b746c5c18803

    SuSE-6.4
      
      13a3e9a366d3e09ee6dcc91148c86be7
      
      53b7ab8cfad2f14b211e1d505d721558
    source rpm:
      
      a9b0af504703aa7deeb2e0f6b7b0f512
      
      fbe64c6fbe15e4a9d06847089bb65d13


    Sparc Platform:

    SuSE-7.3
      
      99bf4711c8e781622fd3aba55f21ae5a
    source rpm:
      
      d56d66c2fd92efa157b98efb1bf6a0c6

    SuSE-7.1
      
      f6948f9862addc8d6805311b5760c95a
      
      e6e9bf05539791905710ffb23fbd4801
    source rpm:
      
      1ad2798d085326317590e0fb42346fa9
      
      1332572acea60f0c6ca1593fcd245771

    SuSE-7.0
      
      1958de7d7f90d27c87e1dc1b21879736
      
      a54038090e73a78a6f3cc77e1162e4a2
    source rpm:
      
      3a398a096c2657059a093dcf58222e35
      
      7e1483d0b41f48ef3aa00e058b0e761f


    AXP Alpha Platform:

    SuSE-7.1
      
      7f39d3a0ff45f231713c6ba5afbdcc15
      
      5fe79d7f9c2da83222978f75e3387e49
    source rpm:
      
      705a5b370267d8d873f1e3504bcc55ed
      
      e42367f3ad73250ec9feda4687b406d2

    SuSE-7.0
      
      b0977f9c5ed0750b12308d072da1b285
      
      3906c0d918c745582a25fb1c480d3aef
    source rpm:
      
      2afd7d60f6da4feb346ddfefc8bec34a
      
      cab334bf697df713d847ae8c569b7b30

    SuSE-6.4
      
      1bc4ac5b27e3cfd62766d0258f91090a
      
      b809b2523881fbea1f77f3f5b96879c5
    source rpm:
      
      7d6d942bc8b4208fe610f714868009d8
      
      515cb7434886540fae57c5ac56acbb42


    PPC Power PC Platform:

    SuSE-7.3
      
      2a14453696ced035fb21d272f7619a5c
      
      ceda7a8a291d8b3d01127b4e0fb1ccb2
    source rpm:
      
      5427dd36485bdfb0d67060c9bad62127
      
      a572e3f76e68a3577e6a4efe0ec016ae

    SuSE-7.1
      
      a8e274378dc15aab4ca01760c112b770
      
      133528338cb5253a12132e3e9ec2ee2e
    source rpm:
      
      515cb7e5f04cd5980463a8b3f248e08e
      
      b923a7141e0fb4b1f3b6e6d0185cb4aa

    SuSE-7.0
      
      2b301c87d0d2e1546cb6a63427dc9cea
      
      20eef813e618d3ac3e8e24abcaca894c
    source rpm:
      
      7d41eaa9985c49cec7afb76dd29355e7
      
      11bb4cb51a8abf8ebe994dc08f8a7c24

    SuSE-6.4
      
      e8020a0a7153208e58f202b0655f1ce5
      
      efd648b5575b6fce60cd7403fbb15d5a
    source rpm:
      
      521d058bc1513947642f74a121e4e98b
      
      8c9bf3882aa81c7de4b2b920f31e4f69


______________________________________________________________________________

2)  Pending vulnerabilities in SuSE Distributions and Workarounds:

    - ucd-snmpd
    The UCD snmpd contains various security releated bugs.
    We are currently reviewing the code and available fixes to ensure
    they all get fixed. Patches will be available as soon as possible.
    It is strongly recommended to filter SNMP (TCP and UDP packets
    with destination of port 161) traffic.

    - hanterm/wmtv
    The recently reported vulnerabilities in hanterm and wmtv do not
    affect SuSE installations because they are not installed setuid
    or setgid.

    - cipe
    We are about to prepare kernel update packages that fix a DoS
    problem in the kernel modules for the cipe encrypted tunneling software.

______________________________________________________________________________

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 uninstalled 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 toplevel directory of the first CD (pubring.gpg)
           and at   .


  - 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
                <suse-security-subscribe@suse.com>.

    suse-security-announce@suse.com
        -   SuSE's announce-only mailing list.
            Only SuSE's security annoucements are sent to this list.
            To subscribe, send an email to
                <suse-security-announce-subscribe@suse.com>.

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

    ====================================================================    SuSE's security contact is <security@suse.com> or <security@suse.de>.
    The <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 cleartext signature shows proof of the
    authenticity of the text.
    SuSE GmbH makes no warranties of any kind whatsoever with respect
    to the information contained in this security advisory.

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