Mageia: 2020-0331 Moderate: Tomcat HTTP/2 Server Unresponsiveness
mageia
August 18, 2020
A specially crafted sequence of HTTP/2 requests could trigger high CPU usage for several seconds
Summary
A specially crafted sequence of HTTP/2 requests could trigger high CPU usage
for several seconds. If a sufficient number of such requests were made on
concurrent HTTP/2 connections, the server could become unresponsive
(CVE-2020-11996).
An h2c direct connection did not release the HTTP/1.1 processor after the
upgrade to HTTP/2. If a sufficient number of such requests were made, an
OutOfMemoryException could occur leading to a denial of service
(CVE-2020-13934).
The payload length in a WebSocket frame was not correctly validated. Invalid
payload lengths could trigger an infinite loop. Multiple requests with invalid
payload lengths could lead to a denial of service (CVE-2020-13935).
References
- https://bugs.mageia.org/show_bug.cgi?id=26862
- https://tomcat.apache.org/security-9.html
- https://tomcat.apache.org/security-9.html
- https://www.cve.org/CVERecord?id=CVE-2020-11996
- https://www.cve.org/CVERecord?id=CVE-2020-13934
- https://www.cve.org/CVERecord?id=CVE-2020-13935
Topics Covered
Resolution
SRPMS
- 7/core/tomcat-9.0.37-1.2.mga7
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Severity
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Publication date: 18 Aug 2020
URL: https://advisories.mageia.org/MGASA-2020-0331.html
Type: security
CVE: CVE-2020-11996,
CVE-2020-13934,
CVE-2020-13935
Topics Covered
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