A vulnerability has been discovered in the RWCards component for Joomla!, which can be exploited by malicious people to disclose sensitive information.
Input passed to the "img" parameter in captcha/captcha_image.php is not properly sanitised before being used. This can be exploited to display arbitrary files via directory traversal attacks and URL-encoded NULL bytes.
Successful exploitation requires that "magic_quotes_gpc" is disabled.
The vulnerability is confirmed in version 3.0.11. Prior versions may also be affected.
Solution: Update to version 3.0.12 or later.
Provided and/or discovered by: Vrs-hCk
Original Advisory: Vrs-hCk:
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