Description: Kacper has reported a vulnerability in KGB, which can be exploited by malicious people to compromise a vulnerable system.
Input passed to the "skinnn" parameter in kgbmod/sesskglogadmin.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 or to execute arbitrary PHP code by including kg/wpisy.txt, which contains guestbook entries.
Successful exploitation requires that "register_globals" is enabled and "magic_quotes_gpc" is disabled.
The vulnerability is reported in version 1.9. Other versions may also be affected.
Solution: Edit the source code to ensure that input is properly verified.
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