---

Conectiva Linux Advisory: zlib


CONECTIVA LINUX SECURITY ANNOUNCEMENT


PACKAGE : zlib
SUMMARY : Fix for denial of service vulnerabilities
DATE : 2004-10-25 15:45:00
ID : CLA-2004:878
RELEVANT RELEASES : 10


DESCRIPTION
“zlib”[1] is a compression library used by several programs.

This announcement improves the correction adopted by the
previous one[2] by adding a single missing hunk to the correction’s
patch.

Due to a Debian bug report[3], a denial of service
vulnerability[4] was discovered in the zlib compression library
versions 1.2.x, in the inflate() and inflateBack() functions. An
attacker could exploit this vulnerability to launch a denial of
service attack on any application using the zlib library. Older
versions of zlib are not affected.

SOLUTION
It is recommended that all Conectiva Linux users upgrade their
packages.

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

REFERENCES
1.http://www.gzip.org/zlib/
2.http://distro.conectiva.com.br/atualizacoes/index.php?id=a&anuncio=000865&idioma=en

3.http://bugs.debian.org/252253

4.http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0797

UPDATED PACKAGES

ftp://atualizacoes.conectiva.com.br/10/SRPMS/libz1-1.2.1-47972U10_2cl.src.rpm


ftp://atualizacoes.conectiva.com.br/10/RPMS/libz1-1.2.1-47972U10_2cl.i386.rpm


ftp://atualizacoes.conectiva.com.br/10/RPMS/libz-devel-1.2.1-47972U10_2cl.i386.rpm


ftp://atualizacoes.conectiva.com.br/10/RPMS/libz-devel-static-1.2.1-47972U10_2cl.i386.rpm

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


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


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


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