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Apache Tomcat: Moderate: HTTP/2 request header mix-up (CVE-2020-17527)

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Apache Tomcat: Moderate: HTTP/2 request header mix-up (CVE-2020-17527)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
12/04/2020
Created
12/05/2020
Added
12/04/2020
Modified
01/28/2021

Description

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.

Solution(s)

  • apache-tomcat-upgrade-8_5_60
  • apache-tomcat-upgrade-9_0_40

References

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