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Debian: New vnc4 packages fix remote code execution Print E-mail
User Rating:      How can I rate this item?
Posted by Benjamin D. Thomas   
Debian It was discovered that xvnc4viewer, a virtual network computing client software for X, is prone to an integer overflow via a malicious encoding value that could lead to arbitrary code execution.
- ------------------------------------------------------------------------
Debian Security Advisory DSA-1716-1                  security@debian.org
http://www.debian.org/security/                           Steffen Joeris
January 31, 2009                      http://www.debian.org/security/faq
- ------------------------------------------------------------------------

Package        : vnc4
Vulnerability  : integer overflow
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2008-4770
Debian Bug     : 513531

It was discovered that xvnc4viewer, a virtual network computing client
software for X, is prone to an integer overflow via a malicious
encoding value that could lead to arbitrary code execution.

For the stable distribution (etch) this problem has been fixed in
version 4.1.1+X4.3.0-21+etch1.

For the unstable (sid) distribution this problem has been fixed in
version 4.1.1+X4.3.0-31.

For the testing (lenny) distribution this problem will be fixed soon.

We recommend that you upgrade your vnc4 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 4.0 alias etch
- -------------------------------

Source archives:

  http://security.debian.org/pool/updates/main/v/vnc4/vnc4_4.1.1+X4.3.0-21+etch1.diff.gz
    Size/MD5 checksum:    50904 55c92400d7949023c3488dcec680d613
  http://security.debian.org/pool/updates/main/v/vnc4/vnc4_4.1.1+X4.3.0.orig.tar.gz
    Size/MD5 checksum: 31536534 b28c43385fe574d612ddbd0b645082f7
  http://security.debian.org/pool/updates/main/v/vnc4/vnc4_4.1.1+X4.3.0-21+etch1.dsc
    Size/MD5 checksum:      696 0d0f0e7f58c6440481b8bfa83af8cd63

alpha architecture (DEC Alpha)

  http://security.debian.org/pool/updates/main/v/vnc4/vnc4-common_4.1.1+X4.3.0-21+etch1_alpha.deb
    Size/MD5 checksum:    19868 56d083c639e24961fcbbf98cec86dd11
  http://security.debian.org/pool/updates/main/v/vnc4/xvnc4viewer_4.1.1+X4.3.0-21+etch1_alpha.deb
    Size/MD5 checksum:   172424 ec5afb4bf93d6988859e0dca63b922a4
  http://security.debian.org/pool/updates/main/v/vnc4/vnc4server_4.1.1+X4.3.0-21+etch1_alpha.deb
    Size/MD5 checksum:  2682410 e2ad2547dda085010c318900786ee935

amd64 architecture (AMD x86_64 (AMD64))

  http://security.debian.org/pool/updates/main/v/vnc4/vnc4server_4.1.1+X4.3.0-21+etch1_amd64.deb
    Size/MD5 checksum:  2169248 27b31d7391acb4b7d4e98a97a341bcf3
  http://security.debian.org/pool/updates/main/v/vnc4/xvnc4viewer_4.1.1+X4.3.0-21+etch1_amd64.deb
    Size/MD5 checksum:   144462 097687a2626960fcda86fa8df3831151
  http://security.debian.org/pool/updates/main/v/vnc4/vnc4-common_4.1.1+X4.3.0-21+etch1_amd64.deb
    Size/MD5 checksum:    18778 68843484c257b04314e141a1bc370443

hppa architecture (HP PA RISC)

  http://security.debian.org/pool/updates/main/v/vnc4/xvnc4viewer_4.1.1+X4.3.0-21+etch1_hppa.deb
    Size/MD5 checksum:   181264 ca3758fa85fb049fdd8f965d3e67ed40
  http://security.debian.org/pool/updates/main/v/vnc4/vnc4server_4.1.1+X4.3.0-21+etch1_hppa.deb
    Size/MD5 checksum:  2294922 00482f651a2008cd66f4588ac403cba2
  http://security.debian.org/pool/updates/main/v/vnc4/vnc4-common_4.1.1+X4.3.0-21+etch1_hppa.deb
    Size/MD5 checksum:    19490 07ac277452d42f3f5ac8144700109c06

i386 architecture (Intel ia32)

  http://security.debian.org/pool/updates/main/v/vnc4/vnc4server_4.1.1+X4.3.0-21+etch1_i386.deb
    Size/MD5 checksum:  2015342 a1e67da97e85e0ca290e3644b551c686
  http://security.debian.org/pool/updates/main/v/vnc4/vnc4-common_4.1.1+X4.3.0-21+etch1_i386.deb
    Size/MD5 checksum:    18640 27cf156a68540519f9efd4b81fd51dff
  http://security.debian.org/pool/updates/main/v/vnc4/xvnc4viewer_4.1.1+X4.3.0-21+etch1_i386.deb
    Size/MD5 checksum:   147628 9cedf57dd52455c76332f585f6c52dc8

ia64 architecture (Intel ia64)

  http://security.debian.org/pool/updates/main/v/vnc4/vnc4-common_4.1.1+X4.3.0-21+etch1_ia64.deb
    Size/MD5 checksum:    20850 1bc4cf4b52eae3f4df103ef36b13f156
  http://security.debian.org/pool/updates/main/v/vnc4/xvnc4viewer_4.1.1+X4.3.0-21+etch1_ia64.deb
    Size/MD5 checksum:   210896 9f611bbc3397c02056f51b7f3dc7a190
  http://security.debian.org/pool/updates/main/v/vnc4/vnc4server_4.1.1+X4.3.0-21+etch1_ia64.deb
    Size/MD5 checksum:  3436446 a80497194bfa083efc7abb605d63e8e5

mips architecture (MIPS (Big Endian))

  http://security.debian.org/pool/updates/main/v/vnc4/xvnc4viewer_4.1.1+X4.3.0-21+etch1_mips.deb
    Size/MD5 checksum:   167956 a675e51fa9e97a06161aa1a39a0a40e0
  http://security.debian.org/pool/updates/main/v/vnc4/vnc4-common_4.1.1+X4.3.0-21+etch1_mips.deb
    Size/MD5 checksum:    19334 ba9c0e77f3127023fb804771bbc02be1
  http://security.debian.org/pool/updates/main/v/vnc4/vnc4server_4.1.1+X4.3.0-21+etch1_mips.deb
    Size/MD5 checksum:  2219206 26797854e72b6e37ae36b3ab25fe9f81

mipsel architecture (MIPS (Little Endian))

  http://security.debian.org/pool/updates/main/v/vnc4/xvnc4viewer_4.1.1+X4.3.0-21+etch1_mipsel.deb
    Size/MD5 checksum:   166658 f65eb37aac9e5999bfe8357cc5fa6d1a
  http://security.debian.org/pool/updates/main/v/vnc4/vnc4-common_4.1.1+X4.3.0-21+etch1_mipsel.deb
    Size/MD5 checksum:    19364 8756098357f1d940067ba336f5fd2412
  http://security.debian.org/pool/updates/main/v/vnc4/vnc4server_4.1.1+X4.3.0-21+etch1_mipsel.deb
    Size/MD5 checksum:  2216976 511790cec54a6fbb4d82b7264faa828c

powerpc architecture (PowerPC)

  http://security.debian.org/pool/updates/main/v/vnc4/vnc4-common_4.1.1+X4.3.0-21+etch1_powerpc.deb
    Size/MD5 checksum:    18964 dc9aaf61e3ed3af75ec6721a34837e91
  http://security.debian.org/pool/updates/main/v/vnc4/xvnc4viewer_4.1.1+X4.3.0-21+etch1_powerpc.deb
    Size/MD5 checksum:   150726 72aec061f31ca36cde5de15155566267
  http://security.debian.org/pool/updates/main/v/vnc4/vnc4server_4.1.1+X4.3.0-21+etch1_powerpc.deb
    Size/MD5 checksum:  2175212 dd3910238f15e0b3e5217156fb7a82b1

s390 architecture (IBM S/390)

  http://security.debian.org/pool/updates/main/v/vnc4/xvnc4viewer_4.1.1+X4.3.0-21+etch1_s390.deb
    Size/MD5 checksum:   146930 3944bd5e31b674d5f61df09bf559da7a
  http://security.debian.org/pool/updates/main/v/vnc4/vnc4-common_4.1.1+X4.3.0-21+etch1_s390.deb
    Size/MD5 checksum:    18962 9be75dac3eb47ad7fcd3cdf2f791ef29
  http://security.debian.org/pool/updates/main/v/vnc4/vnc4server_4.1.1+X4.3.0-21+etch1_s390.deb
    Size/MD5 checksum:  2037162 90f5428057526f8ddd3597b68640278a

sparc architecture (Sun SPARC/UltraSPARC)

  http://security.debian.org/pool/updates/main/v/vnc4/xvnc4viewer_4.1.1+X4.3.0-21+etch1_sparc.deb
    Size/MD5 checksum:   140638 8c079b90ee4f3fe80b2ce7eac796b2d0
  http://security.debian.org/pool/updates/main/v/vnc4/vnc4server_4.1.1+X4.3.0-21+etch1_sparc.deb
    Size/MD5 checksum:  1976152 695f3eca91cd7f4a8b15546fb9f53e97
  http://security.debian.org/pool/updates/main/v/vnc4/vnc4-common_4.1.1+X4.3.0-21+etch1_sparc.deb
    Size/MD5 checksum:    18334 b5aa41215f8d4d90849bd7e17e6f3720


  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@lists.debian.org
 
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