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.
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
| Link | Tags |
|---|---|
| https://www.exploit-db.com/exploits/7217 | exploit |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/46828 | vdb entry |
| http://secunia.com/advisories/32823 | third party advisory vendor advisory |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/46823 | vdb entry |
| http://secunia.com/advisories/38670 | third party advisory |
| http://www.qsfportal.com/index.php?a=newspost&t=191 | url repurposed |
| http://osvdb.org/50143 | vdb entry |
| http://www.securityfocus.com/bid/32452 | vdb entry exploit |