Mandriva- Advisories MDKSA-2006:185: Updated php packages to address multiple vulnerabilities

[Mandriva]

Advisories MDKSA-2006:185: Updated php packages to address multiple vulnerabilities
PHP 4.x up to 4.4.4 and PHP 5 up to 5.1.6 allows local users to bypass
certain Apache HTTP Server httpd.conf options, such as safe_mode and
open_basedir, via the ini_restore function, which resets the values to
their php.ini (Master Value) defaults. (CVE-2006-4625)

A race condition in the symlink function in PHP 5.1.6 and earlier
allows local users to bypass the open_basedir restriction by using a
combination of symlink, mkdir, and unlink functions to change the file
path after the open_basedir check and before the file is opened by the
underlying system, as demonstrated by symlinking a symlink into a
subdirectory, to point to a parent directory via .. (dot dot)
sequences, and then unlinking the resulting symlink. (CVE-2006-5178)

Because the design flaw cannot be solved it is strongly recommended to
disable the symlink() function if you are using the open_basedir
feature. You can achieve that by adding symlink to the list of disabled
functions within your php.ini: disable_functions=...,symlink

The updated packages do not alter the system php.ini.

Updated packages have been patched to correct the CVE-2006-4625 issue.
Users must restart Apache for the changes to take effect.
http://mandrivausers.org/index.php?showtopic=36000
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Tue, 17 Oct 2006 23:06:28 +0000