ahmadbady has discovered some vulnerabilities in phpSkelSite, which can be exploited by malicious people to conduct cross-site scripting attacks, disclose sensitive information, and compromise a vulnerable system.
1) Input appended to the URL after "[installation path]/index.php/" is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in the context of an affected site.
2) Input passed to the "TplSuffix" parameter in skysilver/login.tpl.php is not properly verified before being used to include files. This can be exploited to include arbitrary files from local resources via directory traversal attacks.
Successful exploitation of this vulnerability requires that "register_globals" is enabled.
3) Input passed to the "theme" parameter in skysilver/login.tpl.php is not properly verified before being used to include files. This can be exploited to include arbitrary files from local and external resources via URL-encoded NULL bytes.
Successful exploitation of this vulnerability requires that "register_globals" is enabled and "magic_quotes_gpc" is disabled.
These vulnerabilities are confirmed in version 1.4. Other versions may also be affected.
Solution: Edit the source code to ensure that input is properly sanitised and verified.
Provided and/or discovered by: ahmadbady
Original Advisory: http://milw0rm.com/exploits/7648
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Subject: phpSkelSite File Inclusion and Cross-Site Scripting Vulnerabilities
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