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