<p>Upgrade <code>Debian:11</code> <code>tomcat9</code> to version 9.0.40-1 or higher.</p>

Information Exposure Affecting tomcat9 package, versions <9.0.40-1

Threat Intelligence

0.33% (72^nd percentile)

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Snyk ID SNYK-DEBIAN11-TOMCAT9-1048208
published 4 Dec 2020
disclosed 3 Dec 2020

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Introduced: 3 Dec 2020

CVE-2020-17527 Open this link in a new tab CWE-200 Open this link in a new tab

How to fix?

Upgrade Debian:11 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:11 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

Attack Vector (AV)

Network
Attack Complexity (AC)

Low
Privileges Required (PR)

None
User Interaction (UI)

None

Scope (S)

Unchanged

Confidentiality (C)

High
Integrity (I)

None
Availability (A)

None

Information Exposure Affecting tomcat9 package, versions <9.0.40-1

Severity

Snyk's Security Team recommends NVD's CVSS assessment