Message-ID: <Pine.LNX.4.44.0306131525530.5927-100000@wotan.suse.de>
From: thomas at suse.de (Thomas Biege)
Subject: SuSE Security Announcement: radiusd-cistron (SuSE-SA:2003:030)

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

______________________________________________________________________________

                        SuSE Security Announcement

        Package:                radiusd-cistron
        Announcement-ID:        SuSE-SA:2003:030
        Date:                   Friday, Jun 13th 2003 09:32 MET
        Affected products:      7.2, 7.3, 8.0
        Vulnerability Type:     possible remote system compromise
        SuSE default package:   no
        Cross References:       http://bugs.debian.org/cgi-bin/bugreport.cgi
                                ?bug=196063

    Content of this advisory:
        1) security vulnerability resolved: handling too large NAS numbers
           problem description, discussion, solution and upgrade information
        2) pending vulnerabilities, solutions, workarounds:
            - lprng
            - frox
            - poster
            - ghostscript-library
        3) standard appendix (further information)

______________________________________________________________________________

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

    The package radiusd-cistron is an implementation of the RADIUS protocol.
    Unfortunately the RADIUS server handles too large NAS numbers not
    correctly. This leads to overwriting internal memory of the server
    process and may be abused to gain remote access to the system the RADIUS
    server is running on.

    There is no temporary workaround known.

    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.

    Please note, missing packages will be published as soon as possible.

    Intel i386 Platform:

    SuSE-8.0:
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/n2/radiusd-cistron-1.6.6-88.i386.rpm
      e61fb299edfb092f24b3e455256cf262
    patch rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/n2/radiusd-cistron-1.6.6-88.i386.patch.rpm
      d323307d4bc4c0e4dc0bcef3f848b91f
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/radiusd-cistron-1.6.6-88.src.rpm
      fc7718319972625612292798092d9a8b

    SuSE-7.3:
    ftp://ftp.suse.com/pub/suse/i386/update/7.3/n3/radiusd-cistron-1.6.4-182.i386.rpm
      ee949e18ef02e87dffc4b5ea8d5d5ec5
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/7.3/zq1/radiusd-cistron-1.6.4-182.src.rpm
      f4f87aab549967c0d4c216c8d2e312a1

    SuSE-7.2:
    ftp://ftp.suse.com/pub/suse/i386/update/7.2/n3/radiusd-cistron-1.6.4-182.i386.rpm
      e5a20985f79c887739ce0b83539c347b
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/i386/update/7.2/zq1/radiusd-cistron-1.6.4-182.src.rpm
      f5f73b9e9c3e5d338bfddd1a6b2b14d8




    Sparc Platform:

    SuSE-7.3:
    ftp://ftp.suse.com/pub/suse/sparc/update/7.3/n3/radiusd-cistron-1.6.4-70.sparc.rpm
      7318cc63ec3c29618b81ae6c8eb29fc8
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/sparc/update/7.3/zq1/radiusd-cistron-1.6.4-70.src.rpm
      0212fba5fd8d4ff3e9afe4a8a8802655




    PPC Power PC Platform:

    SuSE-7.3:
    ftp://ftp.suse.com/pub/suse/ppc/update/7.3/n3/radiusd-cistron-1.6.4-108.ppc.rpm
      30f9920f2a8d2db0e8eb2a0439d61118
    source rpm(s):
    ftp://ftp.suse.com/pub/suse/ppc/update/7.3/zq1/radiusd-cistron-1.6.4-108.src.rpm
      8133911f08442832c383000cb65e70ca



______________________________________________________________________________

2)  Pending vulnerabilities in SuSE Distributions and Workarounds:

    - lprng
    A race condition in psbanner was fixed that can be abused by local
    users to overwrite file owned by daemon:lp.
    New packages are available on out FTP servers.

    - frox
    The init script of frox handled tmp file in an insecure manner.
    This behavior can be exploited by local users.
    New packages are available on out FTP servers.

    - poster
    A possible buffer overflow due to usage of gets() was fixed which could
    have been exploited by malicious input data to execute code under the
    user id of the user running poster.
    New packages are available on out FTP servers.

    - ghostscript-library
    Malicious PostScript[tm] files could execute shell commands
    even if the ghostscript interpreter was invoked with the -dSAFER
    flag.

______________________________________________________________________________

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@...e.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@...e.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@...e.com
        -   general/linux/SuSE security discussion.
            All SuSE security announcements are sent to this list.
            To subscribe, send an email to
                <suse-security-subscribe@...e.com>.

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

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

    =====================================================================
    SuSE's security contact is <security@...e.com> or <security@...e.de>.
    The <security@...e.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 <security@...e.de>
pub  1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@...e.de>

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Bye,
     Thomas
-- 
  Thomas Biege <thomas@...e.de>
  SuSE Linux AG,Deutschherrnstr. 15-19,90429 Nuernberg
  Function: Security Support & Auditing
  "lynx -source http://www.suse.de/~thomas/contact/thomas.asc | gpg --import"
  Key fingerprint = 7254 B15D B3C4 943F 485E  0BBD 8ECC D7CB C200 A213
-- 
	Das erste Opfer einer Schlacht ist immer der Schlachtplan.

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