Information Exposure Affecting jws5-tomcat package, versions <0:9.0.36-9.redhat_8.1.el7jws


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.12% (47th percentile)

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  • Snyk IDSNYK-RHEL7-JWS5TOMCAT-3504893
  • published26 Jul 2021
  • disclosed12 Oct 2020

Introduced: 12 Oct 2020

CVE-2020-13943  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade RHEL:7 jws5-tomcat to version 0:9.0.36-9.redhat_8.1.el7jws or higher.
This issue was patched in RHSA-2021:0494.

NVD Description

Note: Versions mentioned in the description apply only to the upstream jws5-tomcat package and not the jws5-tomcat package as distributed by RHEL. See How to fix? for RHEL:7 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