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

References

CVE-2019-0199

Related Vulnerabilities

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Magento Authorization Bypass Through User-Controlled Key Vulnerability (CVE-2019-7950)

Moodle Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2010-2229)

Oracle Application Server Other Vulnerability (CVE-2002-0566)

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Severity

High

Classification

CVE-2019-0199 CWE-400 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Tags

Missing Update Known Vulnerabilities