Check Point Advisories

GnuPG Message Packet Length Handling Integer Overflow (CVE-2006-3746)

Check Point Reference: CPAI-2006-231
Date Published: 19 Jul 2010
Severity: High
Last Updated: Monday 19 July, 2010
Source:
Industry Reference:CVE-2006-3746
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description GnuPG is an open source implementation of the OpenPGP standard. The OpenPGP standard, as defined in RFC 2440, contains information about the message-exchange packet formats used to provide encryption, decryption, signing, and key management functions. Many applications, especially email programs, utilize GnuPG to ensure the confidentiality and integrity during message exchange. There exists an integer overflow vulnerability in the GnuPG (GNU Privacy Guard) product. The problem is caused by an incorrect handling of the user supplied data. An attacker can exploit this vulnerability to crash a vulnerable application or execute arbitrary code in the security context of the currently running process. In an attack case where code injection is not successful, the affected application will terminate abnormally. In a more sophisticated attack where code injection results is successful, the behavior of the target is entirely dependent on the intended function of the injected code. The code in such a case would execute within the security context of the current user.

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 GnuPG Message Packet Length Handling Integer 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:  NNTP Protection Violation.
Attack Information:  GnuPG message packet length handling integer overflow

×
  Feedback
This website uses cookies for its functionality and for analytics and marketing purposes. By continuing to use this website, you agree to the use of cookies. For more information, please read our Cookies Notice.
OK