eLwaux has discovered a vulnerability in Elgg, which can be exploited by malicious people to disclose sensitive information.
Input passed via the "js" parameter to _css/js.php is not properly verified before being used to read files. This can be exploited to disclose the content of arbitrary files via directory traversal attacks and URL-encoded NULL-bytes.
Successful exploitation requires that simple cache is turned off and that "magic_quotes_gpc" is disabled in php.ini.
The vulnerability is confirmed in version 1.5. Other versions may also be affected.
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Subject: Elgg "js" Information Disclosure Vulnerability
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