|
Freeftpd PORT Command Denial of Service Vulnerability
|
|
Secunia Advisory:
|
SA17737
|
|
|
Release Date:
|
2005-11-25
|
|
Last Update:
|
2005-12-07
|
|
Popularity:
|
5,806 views
|
|
|
Critical:
|
Less critical
|
|
Impact:
|
DoS
|
|
Where:
|
From remote
|
|
Solution Status:
|
Unpatched
|
|
| Software: | FreeFTPd 1.x
|
|
|
Subscribe:
|
Instant alerts on relevant vulnerabilities 
|
|
| CVE reference: | CVE-2005-3812
|
|
Description:
Stefan Lochbihler has discovered a vulnerability in freeftpd, which can be exploited by malicious users to cause a DoS (Denial of Service).
The vulnerability is caused due to a NULL pointer dereferencing error that exists when parsing the parameter of the PORT command. This is due to the failure to check for a NULL return value from the "strstr()" function when looking for the "," separator. This can be exploited to crash the service.
The vulnerability has been confirmed in version 1.0.10. Other versions may also be affected.
Solution:
Grant only trusted users access to the FTP service.
Provided and/or discovered by:
Stefan Lochbihler
Changelog:
2005-12-07: Added CVE reference.
|
|
|
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.
|
