[Please upgrade if you use lsh (an ssh replacement) on any platform --
Raju]

This is an RFC 1153 digest.
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Message-Id: <[EMAIL PROTECTED]>
From: [EMAIL PROTECTED] (Sebastian Krahmer)
Sender: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: [Full-Disclosure] SuSE Security Announcement: lsh (SuSE-SA:2003:041)
Date: Wed,  1 Oct 2003 11:46:01 +0200 (CEST)

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

______________________________________________________________________________

                        SuSE Security Announcement

        Package:                lsh
        Announcement-ID:        SuSE-SA:2003:041
        Date:                   Wed Oct  1 10:24:45 CEST 2003 
        Affected products:      8.0, 8.1, 8.2
        Vulnerability Type:     remote code execution
        Severity (1-10):        5
        SuSE default package:   yes
        Cross References:       - 

    Content of this advisory:
        1) security vulnerability resolved: Buffer overflow in lsh.
           problem description, discussion, solution and upgrade information
        2) pending vulnerabilities, solutions, workarounds:
            - node
            - proftp
            - OpenSSL
        3) standard appendix (further information)

______________________________________________________________________________

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

    LSH is the GNU implementation of SSH and can be seen as an alternative
    to OpenSSH.
      Recently various remotely exploitable buffer overflows have been
    reported in LSH. These allow attackers to execute arbitrary code as root
    on un-patched systems.
      LSH is not installed by default on SuSE Linux. An update is therefore
    only recommended if you run LSH.
    Maintained SuSE products are not affected by this bug as LSH is not
    packaged on maintained products such as the Enterprise Server.

    For the updates to take effect execute the following command as root:

      /usr/sbin/rclshd restart

    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/lsh-1.5-114.i586.rpm
      798f52402cda6c7e1733aed15bf0d9cb
    patch rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/lsh-1.5-114.i586.patch.rpm
      9308cdb133d2311a9dc4a10bbf613501
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/lsh-1.5-114.src.rpm
      1e1b5beac002cf51d1eea0277934a69d

    SuSE-8.1:
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/lsh-1.4.2-73.i586.rpm
      b5ff8ba104623fe9a77705154aad92f7
    patch rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/lsh-1.4.2-73.i586.patch.rpm
      6341acd3fe513921b7123d7c1d98cc43
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/lsh-1.4.2-73.src.rpm
      0a2b95e911f8760009ad0d5b2fd7618e

    SuSE-8.0:
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/sec3/lsh-1.3.5-188.i386.rpm
      bccfd85985bab8a324b25c1b2443bf2b
    patch rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/sec3/lsh-1.3.5-188.i386.patch.rpm
      8a232720cb0a4b35d0899e9c6a4e80ae
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/lsh-1.3.5-188.src.rpm
      8e3e30b134b12400559152bb5c53d0f8

______________________________________________________________________________

2)  Pending vulnerabilities in SuSE Distributions and Workarounds:

    - node
    A format string vulnerability has been fixed in the new node packages
    available on our ftp servers. An update is recommended if you use this
    package.

    - proftp
    A off-by-one buffer overflow has been fixed in the proftp packages for
    SuSE Linux 7.2 and 7.3. Note that the bug that was fixed is different from
    the 'ASCII File Transfer Buffer Overrun Vulnerability' (CAN-2003-0831). 
    The proftp packages shipped by SuSE are not affected by CAN-2003-0831.

    - OpenSSL
    Critical bugs within the ASN.1 parsing routines have been reported recently.
    We are currently building new packages and will notify you in a separate
    advisory when the packages are available. 

______________________________________________________________________________

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 [EMAIL PROTECTED]), 
       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 "[EMAIL PROTECTED]" 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:

    [EMAIL PROTECTED]
        -   general/linux/SuSE security discussion. 
            All SuSE security announcements are sent to this list.
            To subscribe, send an email to 
                <[EMAIL PROTECTED]>.

    [EMAIL PROTECTED]
        -   SuSE's announce-only mailing list.
            Only SuSE's security announcements are sent to this list.
            To subscribe, send an email to
                <[EMAIL PROTECTED]>.

    For general information or the frequently asked questions (faq) 
    send mail to:
        <[EMAIL PROTECTED]> or
        <[EMAIL PROTECTED]> respectively.

    =====================================================================
    SuSE's security contact is <[EMAIL PROTECTED]> or <[EMAIL PROTECTED]>.
    The <[EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]>
pub  1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <[EMAIL PROTECTED]>

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_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.netsys.com/full-disclosure-charter.html

------------------------------

End of this Digest
******************

-- 
Raj Mathur                [EMAIL PROTECTED]      http://kandalaya.org/
       GPG: 78D4 FC67 367F 40E2 0DD5  0FEF C968 D0EF CC68 D17F
                  All your domain are belong to us.
                      It is the mind that moves

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