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OpenSSL DTLS Hello Message Denial of Service (CVE-2014-0221)

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Check Point Reference: CPAI-2014-1617
Date Published:
Severity:
Last Updated:
Source: OpenSSL
Industry Reference(s): CVE-2014-0221
Protection Provided by: Security Gateway
  • R77
  • R76
  • R75
  • R71
  • R70
Who is Vulnerable?
OpenSSL prior 0.9.8za, 1.0.0 before 1.0.0m and 1.0.1 before 1.0.1h
Vulnerability Description
A Denial of Service vulnerability has been reported in older versions of OpenSSL. The vulnerability is due to a DTLS recursion flaw. A remote attacker can exploit this vulnerability by sending an invalid DTLS handshake to an OpenSSL DTLS client.

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, Protection tab and select the version of your choice.

To configure the defense, select your product from the list below and follow the related protection steps.

Security Gateway R77 / R76 / R75 / R71 / R70

How Can I Protect My Network?

  1. In the IPS tab, click Protections and find the OpenSSL DTLS Hello Message Denial of Service protection using the Search tool and Edit the protection's settings.
  2. Install policy on all modules.

How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:

Attack Name:  SSL Enforcement Violation.
Attack Information:  OpenSSL DTLS Hello Message Denial of Service