[CLA-2003:619] Conectiva Security Announcement - zlib

[Conectiva Updates <secure () conectiva com br>]

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CONECTIVA LINUX SECURITY ANNOUNCEMENT 
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PACKAGE   : zlib
SUMMARY   : gzprintf() buffer overflow
DATE      : 2003-04-07 17:10:00
ID        : CLA-2003:619
RELEVANT
RELEASES  : 6.0, 7.0, 8

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DESCRIPTION
 "zlib"[1] is a compression library used by several programs.
 
 Richard Kettlewell discovered[1] a buffer overflow vulnerability[2]
 in the gzprintf() function provided by zlib. If a program passes
 unsafe data to this function (e.g. data from remote images or network
 traffic), it is possible for a remote attacker to execute arbitrary
 code or to cause a denial of service in such programs.
 
 Although hundreds of programs are linked against zlib in Conectiva
 Linux, the vulnerable function, gzprintf(), is rarely used, which
 lessens the impact of this vulnerability.
 
 The Common Vulnerabilities and Exposures (CVE) project has assigned
 the name CAN-2003-0107 to this issue.


SOLUTION
 All users should upgrade.
 
 Please note that it is necessary to restart services which use the
 library so that the new, fixed, version is used. A list of such
 applications can be obtained after the upgrade with the following
 command:
 
     lsof | grep libz
 
 The first column will contain the name of the application that needs
 to be restarted. If there is any doubt about which application has to
 be restarted or how to do it, we recommend a system reboot.
 
 
 REFERENCES:
 1.http://www.gzip.org/zlib/
 2.http://online.securityfocus.com/archive/1/312869
 3.http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0107


UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/zlib-1.1.3-15U60_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/zlib-devel-1.1.3-15U60_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/zlib-devel-static-1.1.3-15U60_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/zlib-1.1.3-15U60_2cl.src.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/zlib-1.1.3-15U70_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/zlib-devel-1.1.3-15U70_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/zlib-devel-static-1.1.3-15U70_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/zlib-1.1.3-15U70_2cl.src.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/zlib-1.1.3-16U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/zlib-devel-1.1.3-16U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/zlib-devel-static-1.1.3-16U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/SRPMS/zlib-1.1.3-16U80_1cl.src.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 reagarding 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 2003 (c) Conectiva Inc.
http://www.conectiva.com

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