Multiple directory traversal vulnerabilities in HTTP File Server (HFS) before 2.2c, when account names are used as log filenames, allow remote attackers to create arbitrary (1) files and (2) directories via a .. (dot dot) in an account name, when requesting the / URI; and (3) append arbitrary data to a file via a .. (dot dot) in an account name, when requesting a URI composed of a "/?%0a" sequence followed by the data.
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 |
|---|---|
| http://www.rejetto.com/hfs/?f=wn | exploit |
| http://www.securityfocus.com/bid/27423 | vdb entry |
| http://securityreason.com/securityalert/3581 | third party advisory |
| http://www.securityfocus.com/archive/1/486873/100/0/threaded | mailing list |
| http://www.syhunt.com/advisories/hfshack.txt | exploit |
| http://www.syhunt.com/advisories/hfs-1-log.txt | |
| http://secunia.com/advisories/28631 | third party advisory vendor advisory |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/39873 | vdb entry |