|
Serv-U File Renaming Vulnerabilities and STOU Denial of Service
|
|
Secunia Advisory:
|
SA32150
|
|
|
Release Date:
|
2008-10-06
|
|
Last Update:
|
2008-10-10
|
|
Popularity:
|
1,452 views
|
|
|
Critical:
|
Moderately critical
|
|
Impact:
|
DoS
System access
|
|
Where:
|
From remote
|
|
Solution Status:
|
Vendor Patch
|
|
| Software: | Serv-U File Server 7.x
|
|
|
Subscribe:
|
Instant alerts on relevant vulnerabilities 
|
|
| CVE reference: | CVE-2008-4500
CVE-2008-4501
|
|
Description:
Some vulnerabilities have been reported in Serv-U, which can be exploited by malicious users to cause a DoS (Denial of Service) or compromise a vulnerable system.
1) An error in the handling of the "STOU" FTP command can be exploited to exhaust available CPU resources via a specially crafted argument (e.g. "CON:1").
2) An input validation error in the FTP service when renaming files can be exploited to overwrite or create arbitrary files with user-supplied content via directory traversal attacks.
3) An input validation error in the FTP service when renaming files with a certain destination setting can be exploited to move the files to the Windows directory.
Vulnerabilities #1 and #2 are confirmed in version 7.3.0.0 and vulnerability #3 is reported in versions prior to 7.3.0.1. Other versions may also be affected.
Solution:
Update to version 7.3.0.1.
http://www.serv-u.com/customer/record.asp?prod=su
Provided and/or discovered by:
1, 2) dmnt
3) Reported by the vendor.
Changelog:
2008-10-09: Added vulnerability #3. Updated "Solution" section.
2008-10-10: Added CVE reference.
Original Advisory:
Serv-U:
http://www.serv-u.com/releasenotes/
dmnt:
1) http://milw0rm.com/exploits/6660
2) http://milw0rm.com/exploits/6661
|
|
|
Track this Secunia Advisory
|
Customers of the Secunia Vulnerability Intelligence solutions will automatically receive updates when new information regarding this advisory is released.
Read more about our Vulnerability Intelligence solutions and what they can do for you and your company.
|
|
|
About this Secunia Advisory
|
Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
|
