[php-maint] Bug#507101: php5 dba ext: the inifile handler for the dba functions can be used to truncate a file

Raphael Geissert atomo64 at gmail.com
Fri Nov 28 01:56:59 UTC 2008

Source: php5
Version: 5.2.0-1
Severity: important
Tags: security patch


When an invalid key is used when calling dba_replace on a dba inifile resource 
it leads to file truncation.

Example from SecurityReason[1]:
> # cat /www/dba.ham.php
> <?php
> $source=dba_open("/www/about.ini", "wlt", "inifile");
> dba_replace("\0","/www/",$source);
> ?>
> # php /www/dba.ham.php
> # cat /www/about.ini
> #

A patch is available at [2].
Note: this issue also affects php4, as shipped in etch.


Raphael Geissert - Debian Maintainer
www.debian.org - get.debian.net
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