Describe CVE-2007-1711.
What is CVE-2007-1711?
Double free vulnerability in the unserializer in PHP 4.4.5 and 4.4.6 allows context-dependent attackers to execute arbitrary code by overwriting variables pointing to (1) the GLOBALS array or (2) the session data in _SESSION.  NOTE: this issue was introduced when attempting to patch CVE-2007-1701 (MOPB-31-2007)..