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GHSA-vvw4-rfwf-p6hx

Exposure of Sensitive Information to an Unauthorized Actor in Apache Tomcat

Source: GitHub Advisory Database (reviewed) High CVE-2020-17527

Packages

EcosystemPackageAffectedFixed in
Maven org.apache.tomcat:tomcat-coyote >= 10.0.0-M1, < 10.0.0-M10 10.0.0-M10
Maven org.apache.tomcat:tomcat-coyote >= 9.0.0-M1, < 9.0.40 9.0.40
Maven org.apache.tomcat:tomcat-coyote >= 8.5.0, < 8.5.60 8.5.60

Details

As written in the advisory (Markdown source, shown as plain text).

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

External links from the advisory. They lead to third-party sites.