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UNIRAS Brief - 576/04 - Two Debian Security Advisories:



 
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- ----------------------------------------------------------------------------------
   UNIRAS (UK Govt CERT) Briefing Notice - 576/04 dated 19.10.04  Time: 11:15  
  UNIRAS is part of NISCC (National Infrastructure Security Co-ordination Centre)
- ---------------------------------------------------------------------------------- 
  UNIRAS material is also available from its website at www.uniras.gov.uk and
         Information about NISCC is available from www.niscc.gov.uk
- ----------------------------------------------------------------------------------

Title
=====

Two Debian Security Advisories:

1. DSA 567-1 - tiff

2. DSA 569-1 - New netkit-telnet-ssl packages fix denial of service


Detail
====== 

1. Several problems have been discovered in libtiff, the Tag Image File Format library 
for processing TIFF graphics files.  An attacker could prepare a specially crafted TIFF 
graphic that would cause the client to execute arbitrary code or crash.  

2. Michal Zalewski discovered a bug in the netkit-telnet server (telnetd) whereby a 
remote attacker could cause the telnetd process to free an invalid pointer.  This causes 
the telnet server process to crash, leading to a straightforward denial of service 
(inetd will disable the service if telnetd is crashed repeatedly), or possibly the 
execution of arbitrary code with the privileges of the telnetd process 
(by default, the 'telnetd' user).






1.


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

- - --------------------------------------------------------------------------
Debian Security Advisory DSA 567-1                     security@xxxxxxxxxx
http://www.debian.org/security/                             Martin Schulze
October 15th, 2004                      http://www.debian.org/security/faq
- - --------------------------------------------------------------------------

Package        : tiff
Vulnerability  : heap overflows
Problem-Type   : remote
Debian-specific: no
CVE ID         : CAN-2004-0803 CAN-2004-0804 CAN-2004-0886

Several problems have been discovered in libtiff, the Tag Image File Format library 
for processing TIFF graphics files.  An attacker could prepare a specially crafted 
TIFF graphic that would cause the client to execute arbitrary code or crash.  The 
Common Vulnerabilities and Exposures Project has identified the following problems:

CAN-2004-0803

    Chris Evans discovered several problems in the RLE (run length
    encoding) decoders that could lead to arbitrary code execution.

CAN-2004-0804

    Matthias Clasen discovered a division by zero through an integer
    overflow.

CAN-2004-0886

    Dmitry V. Levin discovered several integer overflows that caused
    malloc issues which can result to either plain crash or memory
    corruption.


For the stable distribution (woody) these problems have been fixed in version 3.5.5-6woody1.

For the unstable distribution (sid) these problems have been fixed in version 3.6.1-2.

We recommend that you upgrade your libtiff 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 3.0 alias woody
- - --------------------------------

  Source archives:

    http://security.debian.org/pool/updates/main/t/tiff/tiff_3.5.5-6woody1.dsc
      Size/MD5 checksum:      635 11a374e916d818c05a373feb04cab6a0
    http://security.debian.org/pool/updates/main/t/tiff/tiff_3.5.5-6woody1.diff.gz
      Size/MD5 checksum:    36717 6f4d137f7c935d57757313a610dbd389
    http://security.debian.org/pool/updates/main/t/tiff/tiff_3.5.5.orig.tar.gz
      Size/MD5 checksum:   693641 3b7199ba793dec6ca88f38bb0c8cc4d8

  Alpha architecture:

    http://security.debian.org/pool/updates/main/t/tiff/libtiff-tools_3.5.5-6woody1_alpha.deb
      Size/MD5 checksum:   141424 18b6e6b621178c1419de8a13a0a62366
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g_3.5.5-6woody1_alpha.deb
      Size/MD5 checksum:   105148 875257fb73ba05a575d06650c130a545
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g-dev_3.5.5-6woody1_alpha.deb
      Size/MD5 checksum:   423194 9796f3e82553cedb237f1b574570f143

  ARM architecture:

    http://security.debian.org/pool/updates/main/t/tiff/libtiff-tools_3.5.5-6woody1_arm.deb
      Size/MD5 checksum:   116928 5ed91b9586d830e8da9a5086fc5a6e76
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g_3.5.5-6woody1_arm.deb
      Size/MD5 checksum:    90466 f04c381a418fd33602d1ba30158597d3
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g-dev_3.5.5-6woody1_arm.deb
      Size/MD5 checksum:   404262 30f13bfdf54cfca30ee5ca0f6c6d0e4e

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/t/tiff/libtiff-tools_3.5.5-6woody1_i386.deb
      Size/MD5 checksum:   112068 d15dfdf84f010be08799d456726e1d9d
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g_3.5.5-6woody1_i386.deb
      Size/MD5 checksum:    81054 293f5c99f0a589917257ec7fee0b92fe
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g-dev_3.5.5-6woody1_i386.deb
      Size/MD5 checksum:   387052 9606adb1668decf5ac1ee02a94298e85

  Intel IA-64 architecture:

    http://security.debian.org/pool/updates/main/t/tiff/libtiff-tools_3.5.5-6woody1_ia64.deb
      Size/MD5 checksum:   158774 80c1b7ad68ecc78091ea95414125e81c
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g_3.5.5-6woody1_ia64.deb
      Size/MD5 checksum:   135386 b17f87aa0ad98fc50aa8c137a6f5089c
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g-dev_3.5.5-6woody1_ia64.deb
      Size/MD5 checksum:   446496 757f3b6cc9d3f1ec5a2dfb1c3485caf3

  HP Precision architecture:

    http://security.debian.org/pool/updates/main/t/tiff/libtiff-tools_3.5.5-6woody1_hppa.deb
      Size/MD5 checksum:   128298 46dece015f0282bca0af7f6e740e9d31
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g_3.5.5-6woody1_hppa.deb
      Size/MD5 checksum:   106788 b837005b41c54c341cbd61e8fdb581ff
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g-dev_3.5.5-6woody1_hppa.deb
      Size/MD5 checksum:   420346 3a2b91ee22af99eec3ab42d81cf9d59f

  Motorola 680x0 architecture:

    http://security.debian.org/pool/updates/main/t/tiff/libtiff-tools_3.5.5-6woody1_m68k.deb
      Size/MD5 checksum:   107302 0c702a3e5c2ad7ad7bd96dae64fa2d61
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g_3.5.5-6woody1_m68k.deb
      Size/MD5 checksum:    79770 d67f4347d35bf898a6ab1914cb53a42f
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g-dev_3.5.5-6woody1_m68k.deb
      Size/MD5 checksum:   380218 42e6f07cf2e70de01ca40ac4a97254bf

  Big endian MIPS architecture:

    http://security.debian.org/pool/updates/main/t/tiff/libtiff-tools_3.5.5-6woody1_mips.deb
      Size/MD5 checksum:   124048 85d8c8cbb62cc62c876bf4ed721027cf
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g_3.5.5-6woody1_mips.deb
      Size/MD5 checksum:    87840 5f3312f22b0f345c7eae434f5b871993
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g-dev_3.5.5-6woody1_mips.deb
      Size/MD5 checksum:   410770 be817ddffa91c423b55fda3388d7ce48

  Little endian MIPS architecture:

    http://security.debian.org/pool/updates/main/t/tiff/libtiff-tools_3.5.5-6woody1_mipsel.deb
      Size/MD5 checksum:   123558 42594e9270de16ff802c11eccf7a0efb
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g_3.5.5-6woody1_mipsel.deb
      Size/MD5 checksum:    88198 a8f0abe9205431caf94dce77d11ac477
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g-dev_3.5.5-6woody1_mipsel.deb
      Size/MD5 checksum:   410860 68a12ef6d37fc575105c4ceb9b766949

  PowerPC architecture:

    http://security.debian.org/pool/updates/main/t/tiff/libtiff-tools_3.5.5-6woody1_powerpc.deb
      Size/MD5 checksum:   116042 2258da94549ae05ffae643bc40790487
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g_3.5.5-6woody1_powerpc.deb
      Size/MD5 checksum:    89424 c8d782561a299ffb65ea84b59d88117a
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g-dev_3.5.5-6woody1_powerpc.deb
      Size/MD5 checksum:   402372 1eca24adda52b40c7a8d789fdeb3cb2e

  IBM S/390 architecture:

    http://security.debian.org/pool/updates/main/t/tiff/libtiff-tools_3.5.5-6woody1_s390.deb
      Size/MD5 checksum:   116870 dcddc86a0d96296c07076391adc9d754
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g_3.5.5-6woody1_s390.deb
      Size/MD5 checksum:    91742 40c1de704b191e4abb65af8a4b7fd75d
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g-dev_3.5.5-6woody1_s390.deb
      Size/MD5 checksum:   395332 86d351b75f1f146ddad6d562ca77005c

  Sun Sparc architecture:

    http://security.debian.org/pool/updates/main/t/tiff/libtiff-tools_3.5.5-6woody1_sparc.deb
      Size/MD5 checksum:   132888 9ed9db78d727ba8bfbb25c1e68b03bf2
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g_3.5.5-6woody1_sparc.deb
      Size/MD5 checksum:    88556 a4069600bd9295a27d4eb6e9e0995495
    http://security.debian.org/pool/updates/main/t/tiff/libtiff3g-dev_3.5.5-6woody1_sparc.deb
      Size/MD5 checksum:   397026 149e12055c5711129552fa938b5af431


  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.



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Hash: SHA1

===========================================================================
             

            ESB-2004.0659 -- Debian Security Advisory DSA 569-1
           New netkit-telnet-ssl packages fix denial of service
                              19 October 2004

===========================================================================

        

Product:                netkit-telnet-ssl
Publisher:              Debian
Operating System:       Debian GNU/Linux 3.0
Impact:                 Denial of Service
                        Execute Arbitrary Code/Commands
Access:                 Remote/Unauthenticated
CVE Names:              CAN-2004-0911

Ref:                    ESB-2004.0619

- - --------------------------BEGIN INCLUDED TEXT--------------------

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

- - - --------------------------------------------------------------------------
Debian Security Advisory DSA 569-1                     security@xxxxxxxxxx
http://www.debian.org/security/                             Martin Schulze
October 18th, 2004                      http://www.debian.org/security/faq
- - - --------------------------------------------------------------------------

Package        : netkit-telnet-ssl
Vulnerability  : invalid free(3)
Problem-Type   : remote
Debian-specific: yes
CVE ID         : CAN-2004-0911
Debian Bug     : 273694

Michal Zalewski discovered a bug in the netkit-telnet server (telnetd) whereby a 
remote attacker could cause the telnetd process to free an invalid pointer.  This 
causes the telnet server process to crash, leading to a straightforward denial of 
service (inetd will disable the service if telnetd is crashed repeatedly), or 
possibly the execution of arbitrary code with the privileges of the telnetd 
process (by default, the 'telnetd' user).

For the stable distribution (woody) this problem has been fixed in version 0.17.17+0.1-2woody2

For the unstable distribution (sid) this problem has been fixed in version 0.17.24+0.1-4.

We recommend that you upgrade your netkit-telnet-ssl 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 3.0 alias woody
- - - --------------------------------

  Source archives:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/netkit-telnet-ssl_0.17.17+0.1-2woody2.dsc
      Size/MD5 checksum:      669 c0333bf798925d74a2b0cd156eb691cc
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/netkit-telnet-ssl_0.17.17+0.1-2woody2.diff.gz
      Size/MD5 checksum:     8632 d0b418abcc29fc1790ab5aafb6836dd1
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/netkit-telnet-ssl_0.17.17+0.1.orig.tar.gz
      Size/MD5 checksum:   167658 faf2d112bc4d44f522bad3bc73da8d6d

  Alpha architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_alpha.deb
      Size/MD5 checksum:   101014 abb3671e001662e6e5166d716ad8bfb6
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_alpha.deb
      Size/MD5 checksum:    56848 bb8b0d77208c7f44c63e95a4f7083e21

  ARM architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_arm.deb
      Size/MD5 checksum:    85130 a87761b01081e99e8acc94f40f3aa50b
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_arm.deb
      Size/MD5 checksum:    48482 cabc1071adeac0c6472dfb10731d6995

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_i386.deb
      Size/MD5 checksum:    85456 5f9f99786a8a26c0dcdfacbd2da11383
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_i386.deb
      Size/MD5 checksum:    46586 fee9f04d1a9768f278537e5571300257

  Intel IA-64 architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_ia64.deb
      Size/MD5 checksum:   123126 5ed1d2854d7e91f90724bebcf590252f
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_ia64.deb
      Size/MD5 checksum:    66550 dd096a3593565c983d94730eae09eee9

  HP Precision architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_hppa.deb
      Size/MD5 checksum:    86484 f8105593d974b60cd6fcb5f23c41a890
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_hppa.deb
      Size/MD5 checksum:    53812 a2a6d0755b21d53714b34d1a3a38450c

  Motorola 680x0 architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_m68k.deb
      Size/MD5 checksum:    81360 2a99b7a46d1e7f4abad46afef6549351
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_m68k.deb
      Size/MD5 checksum:    45370 31cb862bbaefbcc9520834fd7393abfb

  Big endian MIPS architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_mips.deb
      Size/MD5 checksum:    97340 31a847f384aa1410f31785185d52bd75
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_mips.deb
      Size/MD5 checksum:    52136 311f7252452a4b39168a9ead120f71b2

  Little endian MIPS architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_mipsel.deb
      Size/MD5 checksum:    97156 de9a70f8a3893c6698d001970c863341
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_mipsel.deb
      Size/MD5 checksum:    52116 6086a1e35d1c224ece0083aaf798468a

  PowerPC architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_powerpc.deb
      Size/MD5 checksum:    88072 2b57b6050d961c729870c33346d5c95c
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_powerpc.deb
      Size/MD5 checksum:    48690 28bc44df1d4506e0231ece63f1ee8b86

  IBM S/390 architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_s390.deb
      Size/MD5 checksum:    88562 77152b7fa6062a90eb505216f1d26bab
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_s390.deb
      Size/MD5 checksum:    50266 c8deb57a9029c38d2fe5f08d11c8c466

  Sun Sparc architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_sparc.deb
      Size/MD5 checksum:    89212 7b810e8f0f16651b4c1d0e5bd4142031
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_sparc.deb
      Size/MD5 checksum:    54466 b82619bdb5299873a25cbbedf541ff15


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

For additional information or assistance, please contact the HELP Desk by 
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Tel: +44 (0) 870 487 0748 Ext 4511
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Outside of Office Hours:
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Tel: +44 (0) 870 487 0748 and follow the prompts

- ----------------------------------------------------------------------------------
UNIRAS wishes to acknowledge the contributions of Debian for the information 
contained in this Briefing. 
- ----------------------------------------------------------------------------------
This Briefing contains the 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 canonical site 
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 
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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 
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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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