Unspecified vulnerability in PHP prior to 5.2.4 has unknown impact and attack vectors, related to an "Improved fix for MOPB-03-2007," probably a variant of CVE-2007-1285.
USN-549-1 fixed vulnerabilities in PHP However, some upstream changes
were incomplete, which caused crashes in certain situations with Ubuntu
710 This update fixes the problem ...
It was discovered that the wordwrap function did not correctly
check lengths Remote attackers could exploit this to cause
a crash or monopolize CPU resources, resulting in a denial of
service (CVE-2007-3998) ...