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Posted by Tekime on 2003-02-19 09:03:20
The PHP Group has learned of a serious security vulnerability in the CGI SAPI of PHP version 4.3.0.
Description
PHP contains code for preventing direct access to the CGI binary with configure option "--enable-force-cgi-redirect" and php.ini option "cgi.force_redirect". In PHP 4.3.0 there is a bug which renders these options useless.
NOTE: This bug does NOT affect any of the other SAPI modules.
(such as the Apache or ISAPI modules, etc.)
Impact
Anyone with access to websites hosted on a web server which employs the CGI module may exploit this vulnerability to gain access to any file readable by the user under which the webserver runs.
A remote attacker could also trick PHP into executing arbitrary PHP code if attacker is able to inject the code into files accessible by the CGI. This could be for example the web server access-logs.
Solution
The PHP Group has released a new PHP version, 4.3.1, which incorporates a fix for the vulnerability. All users of affected PHP versions are encouraged to upgrade to this latest version. The downloads web site at
http://www.php.net/downloads.php
has the new 4.3.1 source tarballs, Windows binaries and source patch from 4.3.0 available for download. You will only need to upgrade if you're using the CGI module of PHP 4.3.0. There are no other bugfixes contained in this release.
Read More at PHP.net
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