In a new SUSE security announcement today, issues have been found with PHP4 and PHP5 bundled with serveral versions of their Linux operating system.

The four issues found are as follows:

• Invalid characters in session names were not blocked.
• CVE-2006-2657: A bug in zend_hash_del() allowed attackers to prevent unsetting of some variables.
• CVE-2006-1991, CVE-2006-1990: Bugs in the substr_compare() and wordwrap function could crash the php interpreter.
• CVE-2006-2906: A CPU consumption denial of service attack in php-gd was fixed.

These issues affect the foloowing versions of SUSE: 10.1, 10.0, 9.3, 9.2, 9.1, Enterprise Server 8, SLES 9, and UnitedLinux 1.0. They can all be used to execute any arbitrary code the user chooses to inject. The severity level is higher on this one, but not at a critical level. It's still recommended, however, that you upgrade as soon as possible. Links to the various upgrade packages can be found here