Several vulnerabilities were discovered in PHP, which could lead to
denial of service or potentially the execution of arbitrary code.
This update also fixes two bugs, which are not treated as security
issues, but fixed nonetheless, see README.Debian.security for details
on the scope of security support for PHP
(CVE-2011-0420,
CVE-2011-1153).
For the oldstable distribution (lenny), these problems have been fixed in
version 5.2.6.dfsg.1-1+lenny12.
For the stable distribution (squeeze), these problems have been fixed in
version 5.3.3-7+squeeze3.
For the unstable distribution (sid), these problems have been fixed in
version 5.3.6-12.
We recommend that you upgrade your php5 packages.