The mail function in PHP 4.x to 4.2.2 does not filter ASCII control
characters from its arguments, which could allow remote attackers to
modify mail message content, including mail headers, and possibly use
PHP as a "spam proxy."
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
BUGTRAQ:20020823 PHP: Bypass safe_mode and inject ASCII control chars with mail()
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