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CVE-2019-0199

7.5 · HIGH

The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.14 and 8.5.0 to 8.5.37 accepted streams with excessive numbers of SETTINGS frames and also permitted clients to keep streams open without…

Published Apr 10, 2019CWE-400EPSS 72.86%

Overview

CVE-2019-0199 is a high-severity vulnerability. It was published on April 10, 2019 and has a CVSS 3.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.14 and 8.5.0 to 8.5.37 accepted streams with excessive numbers of SETTINGS frames and also permitted clients to keep streams open without reading/writing request/response data. By keeping streams open for requests that utilised the Servlet API's blocking I/O, clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reflists.opensuse.org/opensuse-security-announce/2019-06/msg00090.htmlReflists.opensuse.org/opensuse-security-announce/2019-07/msg00013.htmlReflists.opensuse.org/opensuse-security-announce/2019-07/msg00054.htmlRefwww.securityfocus.com/bid/107674Refaccess.redhat.com/errata/RHSA-2019:3929Refaccess.redhat.com/errata/RHSA-2019:3931Reflists.apache.org/thread.html/158ab719cf60448ddbb074798f09152fdb572fc8f781e70a56118d1a%40%3Cdev.tomcat.apache.org%3EReflists.apache.org/thread.html/1dd0a59c1295cc08ce4c9e7edae5ad2268acc9ba55adcefa0532e5ba%40%3Cdev.tomcat.apache.org%3EReflists.apache.org/thread.html/4c438fa4c78cb1ce8979077f668ab7145baf83e7c59f2faf7eccf094%40%3Cdev.tomcat.apache.org%3EReflists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3%40%3Cdev.tomcat.apache.org%3E

How CyberStrike helps

Frequently asked questions

What is CVE-2019-0199?

CVE-2019-0199 is a high-severity vulnerability. It was published on April 10, 2019 and has a CVSS 3.0 base score of 7.5 (HIGH).

How severe is CVE-2019-0199?

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2019-0199?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-0199?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-0199 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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