CVE-2020-13943 Affecting tomcat9 package, versions <9.0.38-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.1% (43rd percentile)

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  • Snyk IDSNYK-DEBIAN11-TOMCAT9-1017099
  • published13 Oct 2020
  • disclosed12 Oct 2020

Introduced: 12 Oct 2020

CVE-2020-13943  (opens in a new tab)

How to fix?

Upgrade Debian:11 tomcat9 to version 9.0.38-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat9 package and not the tomcat9 package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

If an HTTP/2 client connecting to Apache Tomcat 10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37 or 8.5.0 to 8.5.57 exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it was possible that a subsequent request made on that connection could contain HTTP headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources.

CVSS Scores

version 3.1