Auke van Slooten discovered that PHPΒ 5, an hypertext preprocessor,
crashes (because of a NULL pointer dereference) when processing invalid
XML-RPC requests.
For the stable distribution (lenny), this problem has been fixed in
version 5.2.6.dfsg.1-1+lenny8.
For the testing distribution (squeeze), this problem will be fixed soon.
For the unstable distribution (sid), this problem has been fixed in
version 5.3.2-1.
We recommend that you upgrade your php5 packages.