[原文]vars.php in WordPress 2.0.2, possibly when running on Mac OS X, allows remote attackers to spoof their IP address via a PC_REMOTE_ADDR HTTP header, which vars.php uses to redefine $_SERVER['REMOTE_ADDR'].
WordPress contains a flaw that may allow a malicious user to spoof their IP address. The issue is triggered when an attacker registers with a specially crafted request with the PC_REMOTE_ADDR HTTP header set. It is possible that the flaw may allow a remote attacker to bypass IP based access restrictions resulting in a loss of integrity.
Upgrade to version 2.0.3 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.