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Check Point Advisories

Apache Tomcat Denial of Service (CVE-2020-11996)

Check Point Reference: CPAI-2020-3387
Date Published: 14 Nov 2021
Severity: High
Last Updated: 14 Nov 2021
Source:
Industry Reference:CVE-2020-11996
Protection Provided by:

Security Gateway
R80

Who is Vulnerable? Apache Tomcat 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35 and 8.5.0 to 8.5.55
Vulnerability Description A denial of service vulnerability exists in Apache Tomcat. A remote, unauthenticated attacker could exploit this vulnerability by sending a specially crafted HTTP2 packet to a vulnerable server. Successful exploitation of this vulnerability could result in denial of service conditions.

Protection Overview

This protection detects 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

  1. In the IPS tab, click Protections and find the Apache Tomcat Denial of Service (CVE-2020-11996) 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:  Web Server Enforcement Violation.
Attack Information:  Apache Tomcat Denial of Service (CVE-2020-11996)

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