[CLA-2002:512] Conectiva Linux Security Announcement - libpng
Date: Wed, 17 Jul 2002 15:23:21 -0300
From: [email protected]
To: [email protected], [email protected],
Subject: [CLA-2002:512] Conectiva Linux Security Announcement - libpng
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CONECTIVA LINUX SECURITY ANNOUNCEMENT
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PACKAGE : libpng
SUMMARY : Buffer overflow vulnerability
DATE : 2002-07-17 14:50:00
ID : CLA-2002:512
RELEVANT
RELEASES : 6.0, 7.0, 8
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DESCRIPTION
libpng is a library used to create and manipulate PNG (Portable
Network Graphics) image files.
The 1.2.4* and 1.0.14 releases of libpng solve a potential buffer
overflow vulnerability[1] in some functions related to progressive
image loading. Programs such as mozilla and various others use these
functions. An attacker could exploit this to remotely run arbitrary
code or crash an application by using a specially crafted png image.
These new releases also solve other minor bugs such as some memory
leaks in reading image functions.
* libpng 1.2.4 is available only in Conectiva Linux 8, where its
package is called libpng3.
SOLUTION
All users should upgrade.
Please notice that in order to complete the upgrade process, you must
restart all running aplications that are linked to libpng after the
new packages installation. You can see a list of such applications
using the lsof utility, as seen below:
# lsof | grep libpng
REFERENCES:
1.ftp://swrinde.nde.swri.edu/pub/png-group/archives/png-list.200207
DIRECT DOWNLOAD LINKS TO THE UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/libpng-1.0.14-1U60_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/libpng-devel-1.0.14-1U60_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/libpng-1.0.14-1U60_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/libpng-1.0.14-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/libpng-devel-1.0.14-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/libpng-devel-static-1.0.14-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/libpng-doc-1.0.14-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/libpng-1.0.14-1U70_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/libpng-1.0.14-1U8_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/libpng3-1.2.4-1U8_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/libpng-devel-1.2.4-1U8_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/libpng-devel-static-1.2.4-1U8_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/libpng-doc-1.2.4-1U8_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/SRPMS/libpng-1.0.14-1U8_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/8/SRPMS/libpng3-1.2.4-1U8_1cl.src.rpm
ADDITIONAL INSTRUCTIONS
Users of Conectiva Linux version 6.0 or higher may use apt to perform
upgrades of RPM packages:
- add the following line to /etc/apt/sources.list if it is not there yet
(you may also use linuxconf to do this):
rpm [cncbr] ftp://atualizacoes.conectiva.com.br 6.0/conectiva updates
(replace 6.0 with the correct version number if you are not running CL6.0)
- 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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subscribe: [email protected]
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