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[CLA-2001:373] Conectiva Linux Security Announcement - php4
From: secure () CONECTIVA COM BR
Date: Thu, 18 Jan 2001 13:54:36 -0200

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CONECTIVA LINUX SECURITY ANNOUNCEMENT
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PACKAGE   : php4
SUMMARY   : Problems with per-directory php directives and with virtual hosts
DATE      : 2001-01-18 13:52:00
ID        : CLA-2001:373
RELEVANT
RELEASES  : 6.0

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DESCRIPTION
 The php4 module shipped with Conectiva Linux 6.0 has two security
 problems that were recently made public by the PHP development team
 based on a report by James Moore:

 1) It is possible to specify PHP directives on a per-directory basis
 under apache. In the vulnerable versions of PHP, a remote attacker
 could craft an HTTP request that would cause the next page to be
 served with the wrong values for these directives.

 2) Even though PHP is installed, it can be deactivated and activated
 via a directive like "engine=off" or "engine=on". This directive can
 be used on a per-directory basis or even per virtual host. Vulnerable
 versions of the php4 module could "leak" the "engine=off" setting to
 other virtual hosts on the same machine, effectively disabling PHP
 for those hosts and resulting in PHP source code being sent to the
 client instead of being executed on the server.


SOLUTION
 It is recommended that all php4 module users upgrade their packages.
 A workaround for the second problem is to explicitly enable PHP on
 all virtual hosts that require it if at least one virtual host has
 the "engine=off" directive.

 3.0.x versions of the PHP module are not affected by these problems.


DIRECT DOWNLOAD LINKS TO THE UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/php4-4.0.4pl1-1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/php4-4.0.4pl1-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/php4-doc-4.0.4pl1-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/php4-imap-4.0.4pl1-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/php4-ldap-4.0.4pl1-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/php4-mysql-4.0.4pl1-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/php4-pgsql-4.0.4pl1-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/mod_php4-4.0.4pl1-1cl.i386.rpm


ADDITIONAL INSTRUCTIONS
 Users of Conectiva Linux version 6.0 or higher may use apt to perform
 upgrades:
 - 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

 - 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://www.conectiva.com.br/suporte/atualizacoes

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