CVE-2020-11996

MEDIUM

Description

A specially crafted sequence of HTTP/2 requests sent to 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 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.

References

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00064.html

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00072.html

https://lists.apache.org/thread.html/[email protected]%3Cnotifications.ofbiz.apache.org%3E

https://lists.apache.org/thread.html/r5541ef6b6b68b49f76fc4c45695940116da2bcbe0312ef204a00a2e0%40%3Cannounce.tomcat.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cnotifications.ofbiz.apache.org%3E

https://lists.apache.org/thread.html/r74f5a8204efe574cbfcd95b2a16236fe95beb45c4d9fee3d[email protected]%3Ccommits.ofbiz.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Ccommits.ofbiz.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cnotifications.ofbiz.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Ccommits.ofbiz.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cnotifications.ofbiz.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cnotifications.ofbiz.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cnotifications.ofbiz.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cnotifications.ofbiz.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cnotifications.ofbiz.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cnotifications.ofbiz.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cnotifications.ofbiz.apache.org%3E

https://lists.debian.org/debian-lts-announce/2020/07/msg00010.html

https://security.netapp.com/advisory/ntap-20200709-0002/

https://www.debian.org/security/2020/dsa-4727

Details

Source: MITRE

Published: 2020-06-26

Updated: 2020-07-26

Type: CWE-400

Risk Information

CVSS v2.0

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH