NJStar Communicator MiniSMTP Server Remote Stack Buffer Overflow Vulnerability

Bugtraq ID:	50452
Class:	Boundary Condition Error
CVE:	CVE-2011-4040
Remote:	Yes
Local:	No
Published:	Oct 31 2011 12:00AM
Updated:	Dec 05 2011 07:37AM
Credit:	Dillon Beresford
Vulnerable:	NJStar NJStar Communicator 3.00
Not Vulnerable:

NJStar Communicator MiniSMTP Server Remote Stack Buffer Overflow Vulnerability

NJStar Communicator MiniSMTP Server is prone to a remote stack-based buffer-overflow vulnerability because it fails to properly bounds-check user-supplied data before copying it into an insufficiently sized memory buffer.

Attackers can exploit this issue to execute arbitrary code within the context of the application. Failed attacks may cause a denial-of-service condition.

NJStar Communicator 3.00 is vulnerable; other versions may also be affected.

NJStar Communicator MiniSMTP Server Remote Stack Buffer Overflow Vulnerability

The following exploits are available:

• /data/vulnerabilities/exploits/50452.rb
• /data/vulnerabilities/exploits/50452.py

NJStar Communicator MiniSMTP Server Remote Stack Buffer Overflow Vulnerability

Solution:
Currently, we are not aware of any vendor-supplied patches. If you feel we are in error or if you are aware of any more recent information, please mail us at: [email protected].

NJStar Communicator MiniSMTP Server Remote Stack Buffer Overflow Vulnerability

References:

• NJStar Communicator Homepage (NJStar)