DDIVRT-2007-05 NetSupport Manager Client Buffer Overflow
Title
-----
NetSupport Manager Client Buffer Overflow
Severity
--------
Medium
Date Discovered
---------------
9/4/2007
Discovered By
-------------
Digital Defense, Inc. Vulnerability Research Team Credit Given To: sxkeebler
and r@b13$ http://www.digitaldefense.net/
Vulnerability Description
-------------------------
The NetSupport Manager client that listens on TCP port 5405 does not properly
validate input supplied during the initial connection sequence.
Specifically, during the configuration exchange part of the initial connection
setup, the client does not appear to validate the supplied data which can
result in a DoS of the NetSupport Manager Client. Remote code exploitation is
also thought to be possible. Within Technical Document ID TD545, NetSupport
acknowledges that this flaw is present in unspecified versions of NetSupport
School Student.
Solution Description
--------------------
Digital Defense, Inc. notified NetSupport on September 9, 2007 of this flaw but
did not receive any response or acknowledgement from the vendor.
However, NetSupport has released a patch for this flaw as described by
NetSupport Technical Document ID TD545.
Tested Systems / Software (with versions)
-----------------------------------------
NetSupport Manager 10.20 running on Windows XP SP2 and Windows 2K3 SP2.
NetSupport acknowledges in Technical Document ID TD545 that the following
versions of the NetSupport Manager are vulnerable to this flaw:
NSM 10.00, NSS 9.00, NSM 10.20
Vendor Contact
--------------
NetSupport
http://www.netsupportmanager.com/