Bugtraq: [CLA-2004:888] Conectiva Security Announcement

From: Conectiva Updates <secure_at_conectiva.com.br>
Date: Mon, 8 Nov 2004 11:20:33 -0200

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CONECTIVA LINUX SECURITY ANNOUNCEMENT
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PACKAGE : libtiff3
SUMMARY : Fixes for libtiff vulnerabilities
DATE : 2004-11-08 11:19:00
ID : CLA-2004:888
RELEVANT
RELEASES : 9, 10

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DESCRIPTION
libtiff[1] is a library for handling TIFF images.

This announcement fixes several integer overflow vulnerabilities that
were encountered in libtiff.

The fixed vulnerabilities are:

CAN-2004-0803: Chris Evans encountered several problems in the RLE
(Run Length Encoding) decoders that could lead to an arbitrary code
execution vulnerability through a specially crafted image.

CAN-2004-0804: Matthias Clasen encountered a division by zero through
an integer overflow that could lead to a denial of service
vulnerability which could be triggered by a specially crafted image.

CAN-2004-0886: Dmitry V. Levin encountered several integer overflows
that caused malloc issues which could result in either plain a crash
or memory corruption.

SOLUTION
It is recommended that all libtiff users upgrade their packages.

IMPORTANT: all applications linked against libff must be restarted
after the upgrade in order to close the vulnerabilities.

REFERENCES
1.http://www.libtiff.org
2.http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0803
3.http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0804
4.http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0886

ADDITIONAL INSTRUCTIONS
The apt tool can be used to perform RPM packages upgrades:

- run: apt-get update
- after that, execute: apt-get upgrade

Detailed instructions regarding the use of apt and upgrade examples
can be found at http://distro.conectiva.com.br/atualizacoes/#apt?idioma=en

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All packages are signed with Conectiva's GPG key. The key and instructions
on how to import it can be found at
http://distro.conectiva.com.br/seguranca/chave/?idioma=en
Instructions on how to check the signatures of the RPM packages can be
found at http://distro.conectiva.com.br/seguranca/politica/?idioma=en

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All our advisories and generic update instructions can be viewed at
http://distro.conectiva.com.br/atualizacoes/?idioma=en

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Copyright (c) 2004 Conectiva Inc.
http://www.conectiva.com

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Received on Nov 09 2004

[CLA-2004:888] Conectiva Security Announcement - libtiff3