AOL Instant Messenger Remote Buffer Overflow

Bugtraq ID:	3769
Class:	Boundary Condition Error
CVE:
Remote:	Yes
Local:	No
Published:	Jan 02 2002 12:00AM
Updated:	Jan 02 2002 12:00AM
Credit:	This vulnerability was discovered by Matt Conover <[email protected]>, nocarrier, napster, and w00w00 and posted to Bugtraq by Matt Conover <[email protected]>.
Vulnerable:	AOL Instant Messenger 4.8.2616 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 95 SR2 - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows 98SE - Microsoft Windows ME - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 AOL Instant Messenger 4.7.2480 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows CE 3.0 - Microsoft Windows CE 2.0 - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 AOL Instant Messenger 4.7 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows CE 3.0 - Microsoft Windows CE 2.0 - Microsoft Windows ME - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 AOL Instant Messenger 4.6 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 98 - Microsoft Windows CE 3.0 - Microsoft Windows CE 2.0 - Microsoft Windows ME - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 AOL Instant Messenger 4.5 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows CE 3.0 - Microsoft Windows CE 2.0 - Microsoft Windows ME - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 AOL Instant Messenger 4.4 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows CE 3.0 - Microsoft Windows CE 2.0 - Microsoft Windows ME - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 AOL Instant Messenger 4.3.2229 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows CE 3.0 - Microsoft Windows CE 2.0 - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 AOL Instant Messenger 4.3 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows CE 3.0 - Microsoft Windows CE 2.0 - Microsoft Windows ME - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0
Not Vulnerable:

AOL Instant Messenger Remote Buffer Overflow

AOL Instant Messenger (AIM) is a real time messaging service.

The vulnerability exists in the way that AIM parses a game request with a TLV (type, length, value) type of 0x2711. This type of game request is prone to a buffer overflow which could allow a remote user to obtain the same privileges of the user who is currently logged on.

It is important to note that there is currently no way for an AIM user to block this type of request.

**AOL has made modifications to their AIM servers to prevent this vulnerability from being exploited through their servers. However, the underlying problem still exists in the client software which could still be exploited using something similar to a man in the middle attack or if an attacker can bypass the filters on the AIM servers.

AOL Instant Messenger Remote Buffer Overflow

An exploit has been provided by Matt Conover ([email protected]):

• /data/vulnerabilities/exploits/w00aimexp.tgz

AOL Instant Messenger Remote Buffer Overflow

Solution:
Currently the SecurityFocus staff are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

AOL Instant Messenger Remote Buffer Overflow

References:

• AIM Filter (Wicon Software)
  
• AOL Instant Messenger Home Page (AOL)
  
• W00W00 (W00W00 Homepage)