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  1. #1
    Senior Member gore's Avatar
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    SuSe Security announments

    hey all, i just got this mailed to me a minute ago and thought id post it in case any of you use any of this.

    SuSE Security Announcement

    Package: cvs
    Announcement-ID: SuSE-SA:2003:0007
    Date: Wednesday, Jan 22th 2003 08:30 MET
    Affected products: 7.1, 7.2, 7.3, 8.0, 8.1
    SuSE Linux Database Server
    SuSE eMail Server 3.1
    SuSE eMail Server III
    SuSE Firewall Adminhost VPN
    SuSE Linux Admin-CD for Firewall
    SuSE Firewall on CD 2 - VPN
    SuSE Firewall on CD 2
    SuSE Linux Enterprise Server 7
    SuSE Linux Connectivity Server
    SuSE Linux Enterprise Server 8
    SuSE Linux Office Server
    Vulnerability Type: remote system compromise
    Severity (1-10): 3
    SuSE default package: no
    Cross References: CAN-2003-0015

    Content of this advisory:
    1) security vulnerability resolved:
    - double free()
    - removed dangerous features
    problem description, discussion, solution and upgrade information
    2) pending vulnerabilities, solutions, workarounds:
    - libmcrypt
    - gfxboot
    - mod_php4
    - wget
    - IMP
    3) standard appendix (further information)

    ______________________________________________________________________________

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

    CVS (Concurrent Versions System) is a version control system which
    helps to manage concurrent editing of files by various authors.
    Stefan Esser of e-matters reported a "double free" bug in CVS
    server code for handling directory requests. This free() call allows
    an attacker with CVS read access to compromise a CVS server.
    Additionally two features ('Update-prog' and 'Checkin-prog') were
    disabled to stop clients with write access to execute arbitrary code
    on the server. These features may be configurable at run-time in future
    releases of CVS server.

    There is no temporary fix known other then disable public access to the
    CVS server. You do not need to update the cvs package as long as you
    need 'Update-prog' and 'Checkin-prog' feature and work in a trusted
    environment.
    Otherwise install the new packages from our FTP servers please.

    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-8.1:
    ftp://ftp.suse.com/pub/suse/i386/upd...1-235.i586.rpm
    39c4b7d43dbfed5dbc4e1cff6703929d
    patch rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/upd...i586.patch.rpm
    c8986430a0f01c0ccc7fd2795769cb42
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/upd...p1-235.src.rpm
    7aaa5bbd5740f0645307e905faddb748

    SuSE-8.0:
    ftp://ftp.suse.com/pub/suse/i386/upd...1-235.i386.rpm
    e575a12fed87ff0bfb0fb4a62d720ce6
    patch rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/upd...i386.patch.rpm
    97c13a4d400c28dbbbbf4f1b65f11ec7
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/upd...p1-235.src.rpm
    c977c2986c677e8489f5170fcef96945

    SuSE-7.3:
    ftp://ftp.suse.com/pub/suse/i386/upd...1-230.i386.rpm
    0b68cab2f1d7f01570932789c0ec6719
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/upd...11-230.src.rpm
    35ab94986627b96962bada1fc9998b88

    SuSE-7.2:
    ftp://ftp.suse.com/pub/suse/i386/upd...1-231.i386.rpm
    56933c0d5cb7d5e3c419dcfde9f4359f
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/upd...11-231.src.rpm
    f997358538750a4fe856e4ef08c9282a

    SuSE-7.1:
    ftp://ftp.suse.com/pub/suse/i386/upd...1-230.i386.rpm
    e268ef72120bbe32dd8f9de2a147cd35
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/upd...11-230.src.rpm
    6cbbdc648d0f92fb9bdaef0768393596



    Sparc Platform:

    SuSE-7.3:
    ftp://ftp.suse.com/pub/suse/sparc/up...-103.sparc.rpm
    d844d36f87a1314c5e9e0cef0c5c5e74
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/sparc/up...11-103.src.rpm
    156571c1dffc05ecab860311397c71c6




    AXP Alpha Platform:

    SuSE-7.1:
    ftp://ftp.suse.com/pub/suse/axp/upda...-106.alpha.rpm
    674d08dd948ec15f3b7bb9a6efbbf802
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/axp/upda...11-106.src.rpm
    65329bf424c02268d6b6c93a351f816c



    PPC Power PC Platform:

    SuSE-7.3:
    ftp://ftp.suse.com/pub/suse/ppc/upda...11-115.ppc.rpm
    3bbc332aa35da69e6fcaa60c4f085e72
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/ppc/upda...11-115.src.rpm
    e0fbe772152cb24a0d0ee2921432d89d

    SuSE-7.1:
    ftp://ftp.suse.com/pub/suse/ppc/upda...11-115.ppc.rpm
    fdcdabeaf8be8cd78ac8ddab2d17cf61
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/ppc/upda...11-115.src.rpm
    e58e5376fccfd6d00abbe1187b813e78


    ______________________________________________________________________________

    2) Pending vulnerabilities in SuSE Distributions and Workarounds:

    - libmcrypt
    Several buffer overflows in libmcrypt were discovered by Ilia
    Alshanetsky. The buffer overflows can lead to system compromise.
    New packages are currently being build.

    - gfxboot
    Since SuSE 8.1 the bootloader lilo is replaced by grub.
    Grub's password authentication can be bypassed.
    New packages will be released soon.

    - mod_php4
    A buffer overflow in the wordwrap() function has been reported.
    New packages will be prepared and should be available on our ftp
    servers soon.

    - wget
    A buffer overflow in wget's url_filename function was found.
    This buffer overflow can be triggered by long URLs.
    New packages are currently being build and will be released
    soon.

    - IMP
    The web front-end of IMP is vulnerable to a SQL injection attack.
    New packages are currently being build and will be released
    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 <name-of-the-file.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
    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 <file.rpm>
    to verify the signature of the package, where <file.rpm> 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 .

  2. #2
    Antionline's Security Dude instronics's Avatar
    Join Date
    Dec 2002
    Posts
    901
    Hi Gore...

    Thanx for sharing this post, as i see its an important issue here. Further more i would advise you to add the gpg keys for this and all other future updates, so the one who is downloading gets a "secure" vesrion of it directly from the vendors site. For your post the gpg keys are as follows:

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

    - -----BEGIN PGP PUBLIC KEY BLOCK-----
    Version: GnuPG v1.0.6 (GNU/Linux)
    Comment: For info see http://www.gnupg.org

    mQGiBDnu9IERBACT8Y35+2vv4MGVKiLEMOl9GdST6MCkYS3yEKeueNWc+z/0Kvff
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    =LRKC
    - -----END PGP PUBLIC KEY BLOCK-----


    -----BEGIN PGP SIGNATURE-----
    Version: 2.6.3i
    Charset: noconv

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    -----END PGP SIGNATURE-----

    To keep this whole thing safe, never forget to post the source and the pgp keys for any security related updates.

    Cheers
    Ubuntu-: Means in African : "Im too dumb to use Slackware"

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