Description
Directory traversal vulnerability in the get_lang function in global.php in Quicksilver Forums 1.4.2 and earlier, as used in QSF Portal before 1.4.5, when running on Windows, allows remote attackers to include and execute arbitrary local files via a "\" (backslash) in the lang parameter to index.php, which bypasses a protection mechanism that only checks for "/" (forward slash), as demonstrated by uploading and including PHP code in an avatar file.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Quicksilver Forums 1.4.2 (Windows) - Remote Code Execution EDB-7217 · webapps · Nov 24, 2008 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 7217 exploit
- quicksilverforums-avatar-file-upload(46828) vdb-entry
- 32823 third-party-advisory
- quicksilverforums-index-file-include(46823) vdb-entry
- 38670 third-party-advisory
- http://www.qsfportal.com/index.php?a=newspost&t=191
- 50143 vdb-entry
- 32452 vdb-entry