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UNIRAS Brief - 700/06 - Two Debian Security Advisories:



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______________________________________________________________________________

 UNIRAS (UK Government CERT) Briefing - 700/06 dated 01.11.06 time 13:55
 UNIRAS is part of NISCC (the UK National Infrastructure Security
 Co-ordination Centre)
______________________________________________________________________________

 UNIRAS material is available from the NISCC website at www.niscc.gov.uk
______________________________________________________________________________

Title
=====

Two Debian Security Advisories:

1. DSA 1201-1 - New ethereal packages fix denial of service

2. DSA 1202-1 - New screen packages fix arbitrary code execution                 

Detail
======

1. Several remote vulnerabilities have been discovered in the Ethereal network
scanner. 

2. "cstone" and Rich Felker discovered that specially crafted UTF-8 sequences
may lead an out of bands memory write when displayed inside the screen
terminal multiplexer, allowing denial of service and potentially the
execution of arbitrary code.




1.



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- - --------------------------------------------------------------------------
Debian Security Advisory DSA 1201-1                    security@xxxxxxxxxx
http://www.debian.org/security/                         Moritz Muehlenhoff
October 31st, 2006                      http://www.debian.org/security/faq
- - --------------------------------------------------------------------------

Package        : ethereal
Vulnerability  : several
Problem-Type   : remote
Debian-specific: no
CVE ID         : CVE-2006-4574 CVE-2006-4805
Debian Bug     : 396258

Several remote vulnerabilities have been discovered in the Ethereal network
scanner. The Common Vulnerabilities and Exposures project identifies the
following problems:

CVE-2005-4574

    It was discovered that the MIME multipart dissector is vulnerable to
    denial of service caused by an off-by-one overflow.

CVE-2006-4805

    It was discovered that the XOT dissector is vulnerable to denial
    of service caused by memory corruption.

For the stable distribution (sarge) these problems have been fixed in
version 0.10.10-2sarge9. Due to technical problems with the security
buildd infrastructure this update lacks builds for the hppa and sparc
architecture. They will be released as soon as the problems are resolved.

For the unstable distribution (sid) these problems will be fixed soon.

We recommend that you upgrade your ethereal packages.


Upgrade Instructions
- - --------------------

wget url
        will fetch the file for you
dpkg -i file.deb
        will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
        will update the internal database
apt-get upgrade
        will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.


Debian GNU/Linux 3.1 alias sarge
- - --------------------------------

  Source archives:

    http://security.debian.org/pool/updates/main/e/ethereal/ethereal_0.10.10-2sarge9.dsc
      Size/MD5 checksum:      855 4111fa99ac63f549e0ed3e2db668e542
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal_0.10.10-2sarge9.diff.gz
      Size/MD5 checksum:   178221 6566de4d9fc112f25f6bfaf45ad77faa
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal_0.10.10.orig.tar.gz
      Size/MD5 checksum:  7411510 e6b74468412c17bb66cd459bfb61471c

  Alpha architecture:

    http://security.debian.org/pool/updates/main/e/ethereal/ethereal_0.10.10-2sarge9_alpha.deb
      Size/MD5 checksum:   543092 c89ff6f8bdc7e6f7eb2650d5076f03e6
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-common_0.10.10-2sarge9_alpha.deb
      Size/MD5 checksum:  5476386 e2a8e648f15a347d05f5e5cd624edb4c
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-dev_0.10.10-2sarge9_alpha.deb
      Size/MD5 checksum:   154592 5e0d5c37c0cc589d05d6e748e51e03ea
    http://security.debian.org/pool/updates/main/e/ethereal/tethereal_0.10.10-2sarge9_alpha.deb
      Size/MD5 checksum:   106306 f23e0e55dc96d7bdcb0fb95cdfba5548

  AMD64 architecture:

    http://security.debian.org/pool/updates/main/e/ethereal/ethereal_0.10.10-2sarge9_amd64.deb
      Size/MD5 checksum:   486550 ffd006375c90a4d059af7a024188776e
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-common_0.10.10-2sarge9_amd64.deb
      Size/MD5 checksum:  5334530 341c8645167abbae9ae6147b83649edb
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-dev_0.10.10-2sarge9_amd64.deb
      Size/MD5 checksum:   154598 b1d1d14d3d41120c1c5c65ce89f08ab2
    http://security.debian.org/pool/updates/main/e/ethereal/tethereal_0.10.10-2sarge9_amd64.deb
      Size/MD5 checksum:    99588 fdf5d3d8677e03c3edf2cfff04fba4ec

  ARM architecture:

    http://security.debian.org/pool/updates/main/e/ethereal/ethereal_0.10.10-2sarge9_arm.deb
      Size/MD5 checksum:   473062 9a901ea673c269ccbf41ecdff1df53dd
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-common_0.10.10-2sarge9_arm.deb
      Size/MD5 checksum:  4688102 09120393788e912b7ac18182b09fcd2e
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-dev_0.10.10-2sarge9_arm.deb
      Size/MD5 checksum:   154596 e539e5c413c0c39957c0abb9b34c9cfb
    http://security.debian.org/pool/updates/main/e/ethereal/tethereal_0.10.10-2sarge9_arm.deb
      Size/MD5 checksum:    95664 2131328ee58a900aedf3766ddbbfc98e

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/e/ethereal/ethereal_0.10.10-2sarge9_i386.deb
      Size/MD5 checksum:   443698 7693be67596d17632cf4723f8a54d047
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-common_0.10.10-2sarge9_i386.deb
      Size/MD5 checksum:  4529248 0139a1d19b4957c004df779e38a24a59
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-dev_0.10.10-2sarge9_i386.deb
      Size/MD5 checksum:   154592 9c0525063d401ee054b27ce38d634e33
    http://security.debian.org/pool/updates/main/e/ethereal/tethereal_0.10.10-2sarge9_i386.deb
      Size/MD5 checksum:    90942 96abf559fb9430b1692d2d90a66ecc5c

  Intel IA-64 architecture:

    http://security.debian.org/pool/updates/main/e/ethereal/ethereal_0.10.10-2sarge9_ia64.deb
      Size/MD5 checksum:   674472 4abd34b813b05e024043da18bb3e402c
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-common_0.10.10-2sarge9_ia64.deb
      Size/MD5 checksum:  6630134 99f54db4831942d42296ab0a95342478
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-dev_0.10.10-2sarge9_ia64.deb
      Size/MD5 checksum:   154594 97f03089c5a2f20ba38344f6cec55b30
    http://security.debian.org/pool/updates/main/e/ethereal/tethereal_0.10.10-2sarge9_ia64.deb
      Size/MD5 checksum:   129198 1112f7607579fcd8b9ca08f71343f634

  Motorola 680x0 architecture:

    http://security.debian.org/pool/updates/main/e/ethereal/ethereal_0.10.10-2sarge9_m68k.deb
      Size/MD5 checksum:   447802 232f5842aa0e6adb46d20a7bb185f96d
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-common_0.10.10-2sarge9_m68k.deb
      Size/MD5 checksum:  5565136 fb513962f4e20d66c623a73b5ee9e885
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-dev_0.10.10-2sarge9_m68k.deb
      Size/MD5 checksum:   154662 a3b9b1d5863b3aa898f0cc99c1cd6698
    http://security.debian.org/pool/updates/main/e/ethereal/tethereal_0.10.10-2sarge9_m68k.deb
      Size/MD5 checksum:    90952 dd7d57c87b84651cf379e89001605323

  Big endian MIPS architecture:

    http://security.debian.org/pool/updates/main/e/ethereal/ethereal_0.10.10-2sarge9_mips.deb
      Size/MD5 checksum:   462804 d4684b24816cc54d47cfad4ce32bd0b5
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-common_0.10.10-2sarge9_mips.deb
      Size/MD5 checksum:  4723362 7656bd956876056e532df9ecaec97471
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-dev_0.10.10-2sarge9_mips.deb
      Size/MD5 checksum:   154588 8645620716b8d688475fd2ca631ab986
    http://security.debian.org/pool/updates/main/e/ethereal/tethereal_0.10.10-2sarge9_mips.deb
      Size/MD5 checksum:    94788 40066b71cfc3a122453e130e537c2302

  Little endian MIPS architecture:

    http://security.debian.org/pool/updates/main/e/ethereal/ethereal_0.10.10-2sarge9_mipsel.deb
      Size/MD5 checksum:   458076 1ac138ade7fd91253806ae4d8480154b
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-common_0.10.10-2sarge9_mipsel.deb
      Size/MD5 checksum:  4460986 7e9ca725df417dae65208e865ea329d6
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-dev_0.10.10-2sarge9_mipsel.deb
      Size/MD5 checksum:   154606 ce8c4b32631676bc7817c3f4dfa5f6ca
    http://security.debian.org/pool/updates/main/e/ethereal/tethereal_0.10.10-2sarge9_mipsel.deb
      Size/MD5 checksum:    94696 d9525ded73ae609c0dc7672f1279626a

  PowerPC architecture:

    http://security.debian.org/pool/updates/main/e/ethereal/ethereal_0.10.10-2sarge9_powerpc.deb
      Size/MD5 checksum:   455752 8e5806f6f6a86f8b066c6366fbdaacfe
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-common_0.10.10-2sarge9_powerpc.deb
      Size/MD5 checksum:  5067972 c832d4ee9e201fffe698c4e5e8c064d6
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-dev_0.10.10-2sarge9_powerpc.deb
      Size/MD5 checksum:   154602 ec05dd9cb9fda2cb532fc4a02b73870d
    http://security.debian.org/pool/updates/main/e/ethereal/tethereal_0.10.10-2sarge9_powerpc.deb
      Size/MD5 checksum:    94360 811445845ed5bc677c68597f4dc57553

  IBM S/390 architecture:

    http://security.debian.org/pool/updates/main/e/ethereal/ethereal_0.10.10-2sarge9_s390.deb
      Size/MD5 checksum:   479716 1f9523a1563752c8b3f3ae3b77ee9e15
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-common_0.10.10-2sarge9_s390.deb
      Size/MD5 checksum:  5621732 36e4ce1ddaf99edf598933bc8af19c7b
    http://security.debian.org/pool/updates/main/e/ethereal/ethereal-dev_0.10.10-2sarge9_s390.deb
      Size/MD5 checksum:   154590 5b08647010fc5275a27ded68e63d4859
    http://security.debian.org/pool/updates/main/e/ethereal/tethereal_0.10.10-2sarge9_s390.deb
      Size/MD5 checksum:    99946 93cb4151f77499728d2734c64a04f8c2


  These files will probably be moved into the stable distribution on
  its next update.

- - ---------------------------------------------------------------------------------
For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@xxxxxxxxxxxxxxxx
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>
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2.



- -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- - --------------------------------------------------------------------------
Debian Security Advisory DSA 1202-1                    security@xxxxxxxxxx
http://www.debian.org/security/                         Moritz Muehlenhoff
October 31st, 2006                      http://www.debian.org/security/faq
- - --------------------------------------------------------------------------

Package        : screen
Vulnerability  : programming error
Problem-Type   : local(remote)
Debian-specific: no
CVE ID         : CVE-2006-4573
Debian Bug     : 395225 395999

"cstone" and Rich Felker discovered that specially crafted UTF-8 sequences
may lead an out of bands memory write when displayed inside the screen
terminal multiplexer, allowing denial of service and potentially the
execution of arbitrary code.

For the stable distribution (sarge) this problem has been fixed in
version 4.0.2-4.1sarge1. Due to technical problems with the security
buildd infrastructure this update lacks a build for the Sun Sparc
architecture. It will be released as soon as the problems are resolved.

For the unstable distribution (sid) this problem has been fixed in
version 4.0.3-0.1.

We recommend that you upgrade your screen package.


Upgrade Instructions
- - --------------------

wget url
        will fetch the file for you
dpkg -i file.deb
        will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
        will update the internal database
apt-get upgrade
        will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.


Debian GNU/Linux 3.1 alias sarge
- - --------------------------------

  Source archives:

    http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1.dsc
      Size/MD5 checksum:      636 e49dbc2f884aef5f5be87ee4e81c3d83
    http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1.diff.gz
      Size/MD5 checksum:    33782 659bf15bbbb31817ebad9372c8827618
    http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2.orig.tar.gz
      Size/MD5 checksum:   840519 ed68ea9b43d9fba0972cb017a24940a1

  Alpha architecture:

    http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_alpha.deb
      Size/MD5 checksum:   629958 ed0ff830958e515c4cfe7578c3cbd43b

  AMD64 architecture:

    http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_amd64.deb
      Size/MD5 checksum:   599552 c6b981d25812347be756677294dbb91e

  ARM architecture:

    http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_arm.deb
      Size/MD5 checksum:   588386 a6a0e9b44c193c70207977a0a850a33c

  HP Precision architecture:

    http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_hppa.deb
      Size/MD5 checksum:   605298 312f40458406384986d369c69fec651f

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_i386.deb
      Size/MD5 checksum:   581822 0d04f818e84bba320ae7af77463a83f3

  Intel IA-64 architecture:

    http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_ia64.deb
      Size/MD5 checksum:   682540 f1ffda25938b5e08e80ed581a24a0311

  Motorola 680x0 architecture:

    http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_m68k.deb
      Size/MD5 checksum:   560314 693600b1df1c4a87f281365a1102d780

  Big endian MIPS architecture:

    http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_mips.deb
      Size/MD5 checksum:   603124 4eb62645164745cbb946539e0c11af7c

  Little endian MIPS architecture:

    http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_mipsel.deb
      Size/MD5 checksum:   603336 8225a911fb5206aefafc8bd16813ce48

  PowerPC architecture:

    http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_powerpc.deb
      Size/MD5 checksum:   593248 8fab93a81f23a478171c8dab6b21bc78

  IBM S/390 architecture:

    http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_s390.deb
      Size/MD5 checksum:   597560 5bb4d6445f7e433f8adab4b33e9e51fc


  These files will probably be moved into the stable distribution on
  its next update.

- - ---------------------------------------------------------------------------------
For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@xxxxxxxxxxxxxxxx
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>
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______________________________________________________________________________

NISCC values your feedback.

1. Which of the following most reflects the value of the briefing to you?
(Place an 'X' next to your choice)

Very useful:__ Useful:__ Not useful:__ 

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Thank you for your contribution.
______________________________________________________________________________

For additional information or assistance, please contact our help desk
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On-call duty officer outside office hours:
Tel: +44 (0) 870 487 0748 and follow the voice prompts

______________________________________________________________________________

UNIRAS wishes to acknowledge the contributions of Debian for the
information contained in this briefing.
______________________________________________________________________________

This notice contains information released by the original author.
Some of the information may have changed since it was released. If the
vulnerability affects you, it may be prudent to retrieve the advisory
from the site of the original source to ensure that you receive the most
current information concerning that problem.

Reference to any specific commercial product, process, or service by
trade name, trademark manufacturer, or otherwise, does not constitute or
imply its endorsement, recommendation, or favouring by UNIRAS or NISCC.
The views and opinions of authors expressed within this notice shall not
be used for advertising or product endorsement purposes.

Neither UNIRAS or NISCC shall also accept responsibility for any errors
or omissions contained within this briefing notice. In particular, they
shall not be liable for any loss or damage whatsoever, arising from or
in connection with the usage of information contained within this
notice.

UNIRAS is a member of the Forum of Incident Response and Security Teams
(FIRST) and has contacts with other international Incident Response
Teams (IRTs) in order to foster cooperation and coordination in incident
prevention, to prompt rapid reaction to incidents, and to promote
information sharing amongst its members and the community at large.
______________________________________________________________________________

<End of UNIRAS Briefing>

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This email has been scanned by the MessageLabs Email Security System.
For more information please visit http://www.messagelabs.com/email 
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