OpenH323 select() Bitmap Remote Buffer Overflow Vulnerability

Bugtraq ID:	12341
Class:	Boundary Condition Error
CVE:
Remote:	Yes
Local:	No
Published:	Jan 24 2005 12:00AM
Updated:	Jan 24 2005 12:00AM
Credit:	Discovery is credited to 3APA3A <[email protected]>.
Vulnerable:	OpenH323 OpenH323 Gatekeeper 2.2 OpenH323 OpenH323 Gatekeeper 2.0.9
Not Vulnerable:	OpenH323 OpenH323 Gatekeeper 2.2.1

OpenH323 select() Bitmap Remote Buffer Overflow Vulnerability

OpenH323 Gatekeeper is prone to a remote buffer overflow due to implementation of the select() system call. This issue could be exploited to cause a denial of service or potentially execute arbitrary code.

OpenH323 select() Bitmap Remote Buffer Overflow Vulnerability

The researcher responsible for discovering this issue has developed exploit code to leverage this vulnerability. The exploit code has not been released to the public.

OpenH323 select() Bitmap Remote Buffer Overflow Vulnerability

Solution:
This vulnerability was addressed in OpenH323 Gatekeeper 2.2.1:


OpenH323 OpenH323 Gatekeeper 2.0.9

• OpenH323 OpenH323 2.2.1
  http://www.gnugk.org/h323download.html

OpenH323 OpenH323 Gatekeeper 2.2

• OpenH323 OpenH323 2.2.1
  http://www.gnugk.org/h323download.html

OpenH323 select() Bitmap Remote Buffer Overflow Vulnerability

References:

• Home Page (OpenH323)
  
• SECURITY.NNOV: Multiple applications fd_set structure bitmap array index overflo (3APA3A <[email protected]>)