Check Point Advisories

AOL Instant Messenger Away Message Buffer Overflow (CVE-2004-0636)

Check Point Reference: CPAI-2004-165
Date Published: 22 Feb 2010
Severity: Medium
Last Updated: Monday 22 February, 2010
Source:
Industry Reference:CVE-2004-0636
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description AOL Instant Messenger (AIM) is an instant messaging and presence computer program which allows registered users to communicate in real time. AOL Instant Messenger (AIM) registers itself as the handler of URL scheme aim. There exists a vulnerability in the way AOL Instant Messenger (AIM) parses an away message. A stack-based buffer overflow can be triggered by opening an excessively long URL using the AIM scheme. An exploit triggering this vulnerability can create a denial of service condition or execute arbitrary code on the target system. In case of an attack where code injection is not successful, the AOL Instant Messenger will crash, causing a denial of service. When there are multiple crashes, the AIM server will refuse further connections from the victim for some period of time. In case of an attack where code injection and execution is successful, the behavior of the attack target is entirely dependent on the intended purpose of the injected code. The code is executed with the security context of the user currently running the product.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

  1. In the IPS tab, click Protections and find the AOL Instant Messenger Away Message Buffer Overflow protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Content Protection Violation.
Attack Information:  AOL Instant Messenger away message buffer overflow

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