Information Exposure Affecting tomcat9 package, versions <9.0.40-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.33% (72nd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-TOMCAT9-1048209
  • published4 Dec 2020
  • disclosed3 Dec 2020

Introduced: 3 Dec 2020

CVE-2020-17527  (opens in a new tab)
CWE-200  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade Debian:unstable tomcat9 to version 9.0.40-1 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:unstable relevant fixed versions and status.

While investigating bug 64830 it was discovered that Apache Tomcat 10.0.0-M1 to 10.0.0-M9, 9.0.0-M1 to 9.0.39 and 8.5.0 to 8.5.59 could re-use an HTTP request header value from the previous stream received on an HTTP/2 connection for the request associated with the subsequent stream. While this would most likely lead to an error and the closure of the HTTP/2 connection, it is possible that information could leak between requests.

References

CVSS Scores

version 3.1