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Security update for PHP4

Knowledgebase

(Last modified: 22OCT2004)


solutions Security update for PHP4 SuSE Linux Maintenance Web (416640c73799c273cb78008c7d2b1c88)

Applies to

Package: php4
apache-mod_php4
apache2-mod_php4
mod_php4-core
php4-imap
php4-mysql
php4-session
Product(s): SUSE CORE 9 for Itanium Processor Family
Patch: patch-9428
Release: 20041022
Obsoletes: ae77fd5dd5c7926fed4a1e163ec0f644
aafa6d723ed65ff9f0a06d23d12770ce

Indications

Everybody using PHP should update.

Contraindications

None.

Problem description

Note: After this update php4-recode can no longer be used at the same time as php4-mysql, php4-imap or apache2-mod_auth_mysql due to the RTLD_GLOBAL fixes. Please refer to /usr/share/doc/packages/php4/README.SuSE for details.
This update fixes four security issues. The first and less important bug can be exploited by remote attackers to bypass HTML tag filtering (cross-site-scripting prevention) by supplying special tags. These kind of tags should be ignored because they are not valid but they get accepted by some commercial web-browsers. The second bug can be exploited by remote attackers by triggering the memory_limit in unsafe states of a PHP execution path to execute arbitrary code. The third and fourth bug depend in bad array parsing of the user input via GET, POST and COOKIE. One could lead to overwriting variable $_FILES, while the other could expose some pieces of the php memory to the attacker.
Moreover, the dlopen() flag for opening php4 modules has been reverted back to RTLD_GLOBAL, as RTDL_LOCAL had some side effects when extensions like php4-unixODBC load their own libraries (unixODBC uses RTLD_GLOBAL).

Solution

Please install the updates provided at the location noted below.

Installation notes

This update is provided as an RPM package that can easily be installed onto a running system by using this command:
rpm -Fvh php4.rpm apache-mod_php4.rpm apache2-mod_php4.rpm mod_php4-core.rpm php4-imap.rpm php4-mysql.rpm php4-session.rpm

links to download packages

Download Source Packages

Download the source code of the patches for maintained products.


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