PT-2013-69: Denial of Service in Serv-U File Server
Vulnerable software
Serv-U File Server
Version: 15.0.0.0 and earlier
Link:
http://www.serv-u.com/
Severity level
Severity level: Medium
Impact: Denial of Service
Access Vector: Remote
CVSS v2:
Base Score: 5.0
Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)
CVE: not assigned
Software description
Serv-U File Server is a Windows and Linux based multi-protocol FTP, HTTP and SFTP file server.
Vulnerability description
The specialists of the Positive Research center have detected a Denial of Service vulnerability in Serv-U File Server.
Handling HTTP request with a recursive variable causes the application to enter an infinite loop, resulting in Denial of Service.
Exploitation
How to fix
Update your sofware up to the latest version
Advisory status
03.10.2013 - Vulnerability details were sent to CERT
19.02.2014 - Vendor releases fixed version and details
31.07.2014 - Public disclosure
Credits
The vulnerability was detected by Sergey Bobrov, Positive Research Center (Positive Technologies Company)
References
http://en.securitylab.ru/lab/PT-2013-69
Reports on the vulnerabilities previously discovered by Positive Research:
http://www.ptsecurity.com/research/advisory/
http://en.securitylab.ru/lab/