SUSE Security Announcement: squid (SuSE-SA:2004:016)

9 Jun 2004


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______________________________________________________________________________

                        SUSE Security Announcement

        Package:                squid
        Announcement-ID:        SuSE-SA:2004:016
        Date:                   Wednesday, Jun 9th 2004 16:30 MEST
        Affected products:      8.2, 9.0, 9.1
        Vulnerability Type:     remote system compromise
        Severity (1-10):        5
        SUSE default package:   no
        Cross References:       CAN-2004-0541

    Content of this advisory:
        1) security vulnerability resolved:
             - buffer overflow
           problem description, discussion, solution and upgrade information
        2) pending vulnerabilities, solutions, workarounds:
             - icecast
             - sitecopy
             - cadaver
             - tla
             - OpenOffice_org
             - tripwire
             - postgresql
             - lha
         3) standard appendix (further information)

______________________________________________________________________________

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

    Squid is a feature-rich web-proxy with support for various web-related
    protocols.
    The NTLM authentication helper application of Squid is vulnerable to
    a buffer overflow that can be exploited remotely by using a long
    password to execute arbitrary code.
    NTLM authentication is enabled by default in the Squid package that
    is shipped by SUSE LINUX.

    There is no workaround known other then turning off the NTLM
    authentication.

    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.


    Intel i386 Platform:

    SuSE-9.1:
    ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/squid-2.5.STABLE5-42.9.i586.rpm
      ea3da461f226cc881562b06224a8370e
    patch rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/squid-2.5.STABLE5-42.9.i586.patch.rpm
      f85bd7c071695d0d9c304969c5a35a23
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/squid-2.5.STABLE5-42.9.src.rpm
      610caf4de1d7333af0f8613767d40bb0

    SuSE-9.0:
    ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/squid-2.5.STABLE3-110.i586.rpm
      fc31dd7379b249d8f9a07d0f4464996d
    patch rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/squid-2.5.STABLE3-110.i586.patch.rpm
      06961779c39bca33ee2d619773f47f39
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/squid-2.5.STABLE3-110.src.rpm
      90c171552d03e2efb731d25a4ffbf553

    SuSE-8.2:
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/squid-2.5.STABLE1-98.i586.rpm
      d35da0a2719ca8de24c299ef9a8dbe3f
    patch rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/squid-2.5.STABLE1-98.i586.patch.rpm
      0aa98cf95a23a0ea35a2e6657717243e
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/squid-2.5.STABLE1-98.src.rpm
      4fdd84cebf8dbdc7334e48a9f8369efc


    SuSE-8.0:
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/n2/squid-2.4.STABLE6-9.i386.rpm
      fa4780901f96712ea22eef28bdf53700
    patch rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/n2/squid-2.4.STABLE6-9.i386.patch.rpm
      917c26da9c444085d045b708548eae3e
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/squid-2.4.STABLE6-9.src.rpm
      dc96baf5541829ee6e615861d17146aa


    Opteron x86_64 Platform:

    SuSE-9.1:
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/squid-2.5.STABLE5-42.9.x86_64.rpm
      868c4121e1622f6ac91a8eaac414eabe
    patch rpm(s):
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/squid-2.5.STABLE5-42.9.x86_64.patch.rpm
      0cbc28a5262dfe4eb72ee3fbbb5b4657
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/squid-2.5.STABLE5-42.9.src.rpm
      20ab0af37af2139e1de8f1f4edfcc2c6

    SuSE-9.0:
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/squid-2.5.STABLE3-110.x86_64.rpm
      616f32f8196ed53a4f5f163f33d2a838
    patch rpm(s):
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/squid-2.5.STABLE3-110.x86_64.patch.rpm
      72ca1d31e833be4d9e9c150349d2bbbc
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/squid-2.5.STABLE3-110.src.rpm
      632bd7bdbe116eff14213b9f6245cd0a

______________________________________________________________________________

2)  Pending vulnerabilities in SUSE Distributions and Workarounds:

    - icecast
    The icecast service is vulnerable to a remote denial-of-service
    attack. Update packages will be available soon.

    - sitecopy
    The sitecopy package includes a vulnerable version of the
    neon library (CAN-2004-0179, CAN-2004-0398). Update packages will be
    available soon.

    - cadaver
    The cadaver package includes a vulnerable version of the
    neon library (CAN-2004-0179, CAN-2004-0398). Update packages will be
    available soon.

    - tla
    The tla package includes a vulnerable version of the
    neon library (CAN-2004-0179, CAN-2004-0398). Update packages are
    available on our FTP servers.

    - OpenOffice_org
    The OpenOffice_org package includes a vulnerable version
    of the neon library (CAN-2004-0179, CAN-2004-0398). Update packages
    will be available soon.

    - tripwire
    A format string bug in tripwire can be exploited locally
    to gain root permissions. Update packages will be available soon.

    - postgresql
    A buffer overflow in psqlODBC could be exploited to crash the
    application using it. E.g. a PHP script that uses ODBC to access a
    PostgreSQL database can be utilized to crash the surrounding Apache
    web-server. Other parts of PostgreSQL are not affected.
    Update packages will be available soon.

    - lha
    Minor security fix for a buffer overflow while handling command
    line options. This buffer overflow could be exploited in conjunction
    with other mechanisms to gain higher privileges or access the system
    remotely.

______________________________________________________________________________

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 
                .

    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
                .

    For general information or the frequently asked questions (faq) 
    send mail to:
         or
         respectively.

    =====================================================================
    SUSE's security contact is  or .
    The  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 
pub  1024D/9C800ACA 2000-10-19 SuSE Package Signing Key 

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SUSE Security Announcement: squid (SuSE-SA:2004:016)

thomas＠suse.de