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PHPBB2 Avatar Images Information Disclosure Vulnerability

It has been reported that phpBB2 reveals a user's IP address. This vulnerability is due to phpBB2's file naming scheme for avatar files.

When a user elects to upload an avatar file to a system using phpBB2, the system will save the file with a random name. This random name consists of the user's IP address, encoded in hexadecimal values, followed by other characters.

A malicious attacker can exploit this vulnerability to find out IP addresses of the users of the system hosting phpBB2 forums.