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                    SUSE Security Announcement

    Package:                cvs
    Announcement-ID:        SuSE-SA:2004:008
    Date:                   Wed Apr 14 16:00:00 MEST 2004
    Affected products:      8.0, 8.1, 8.2, 9.0
                            SuSE Firewall on CD 2
                            SuSE Linux Enterprise Server 7, 8
                            SLES 8 for IBM iSeries and IBM pSeries
                            SuSE Linux Office Server
                            UnitedLinux 1.0
    Vulnerability Type:     remote code execution
    Severity (1-10):        5
    SUSE default package:   No
    Cross References:       

Content of this advisory:
    1) security vulnerability resolved: arbitrary file creation in cvs
       problem description, discussion, solution and upgrade information
    2) pending vulnerabilities, solutions, workarounds:
        - neon
        - tcpdump
        - openssh
        - kdeprint/kdelibs3
        - MPlayer
        - mailman
        - systat
        - apache2
        - emil
    3) standard appendix (further information)

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

The Concurrent Versions System (CVS) offers tools which allow developers
to share and maintain large software projects.
  During the analyzation of the CVS protocol and their implementation, the
SuSE Security Team discovered a flaw within the handling of pathnames.
Evil CVS servers could specify absolute pathnames during checkouts and
updates, which allows to create arbitrary files with the permissions of
the user invoking the CVS client. This could lead to a compromise of the
system.

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-9.0:
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/cvs-1.11.6-79.i586.rpm
  392353d02948dee01fa98832841699be
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/cvs-1.11.6-79.i586.patch.rpm
  fd287ccde902d5a93ce54c141f4f888d
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/cvs-1.11.6-79.src.rpm
  f094e09f54e176747f7441d44c20e12c

SuSE-8.2:
ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/cvs-1.11.5-103.i586.rpm
  a690613adaf637365f8b99a91373f5cf
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/cvs-1.11.5-103.i586.patch.rpm
  844400ec62905d78b9e196c311f49207
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/cvs-1.11.5-103.src.rpm
  202d2afd939caff003fbe73f65977ee6

SuSE-8.1:
ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/cvs-1.11.1p1-326.i586.rpm
  90401ed5771c3570310c23efcd503bee
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/cvs-1.11.1p1-326.i586.patch.rpm
  42335546a7937ccc0fc6173ba1697ed9
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/cvs-1.11.1p1-326.src.rpm
  ca6cb008ba8004635f9892552ed3e569

SuSE-8.0:
ftp://ftp.suse.com/pub/suse/i386/update/8.0/d3/cvs-1.11.1p1-326.i386.rpm
  b24bca587706433d0cfa81ae96822e81
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.0/d3/cvs-1.11.1p1-326.i386.patch.rpm
  b5df706c6862ade002714607ba6027f6
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/cvs-1.11.1p1-326.src.rpm
  26b4e34fb562fdccf33f35bfde16a403


Opteron x86_64 Platform:

SuSE-9.0:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/cvs-1.11.6-78.x86_64.rpm
  dae12f94ea7eb35ed9b5172a8288d032
patch rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/cvs-1.11.6-78.x86_64.patch.rpm
  07ca7acf86abd38e617a60e28dedfb0c
source rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/cvs-1.11.6-78.src.rpm
  02d1e7f89a0f5372dc8a702032f4f4c2

2) Pending vulnerabilities in SUSE Distributions and Workarounds:

- neon
The neon package contained various format string vulnerabilities
which have been fixed. New packages are available on our FTP servers.
Maintained products do not contain the neon package and are therefore
not affected. (CAN-2004-0179)

- tcpdump
The tcpdump program contains a remotely exploitable denial of service
condition in its ISAKMP packet handling. New tcpdump packages are
currently being tested and will soon be available on our FTP servers.

- openssh
The scp program which is part of the openssh package allowed evil
servers to trick clients into creating arbitrary files with
permissions of the user invoking scp. New packages are available on
our FTP servers.

- kdeprint/kdelibs3
The kdeprint system called the ghostscript program without the -dSAFER
option. This has been fixed. New packages are available on our FTP
servers. The package is named "kdelibs3". Maintained products are
not affected.

- MPlayer
The mplayer program contained a buffer overflow while escaping
large URLs. This has been fixed. New MPlayer packages are currently
being tested and will be available soon on our FTP servers.

- mailman
The mailing list manager mailman can be tricked to deny service by
remote attackers. (CAN-2003-0991)
New packages are available on our FTP servers.

- sysstat
This update close two cases of insecure temporary file handling in
the isag code.
New packages are available on our FTP servers.

- apache2
This update fixes a memory leak in the mod_ssl module of apache2
(CAN-2004-0113), a possible remote DoS attack on accessing rarely
used listening ports (CAN-2004-0174), and a problem with unescaped
special characters in log files that could present a security hazard
for terminal emulators (CAN-2003-0020).
New packages are available on our FTP servers.

- emil
The emil mail filter conatins buffer overflows and format-string
bugs that can be exploited remotely if emil is used in conjunction
with procmail, sendmail and alike. (CAN-2004-0152, CAN-2004-0153)
New packages are available on our FTP servers.

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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