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.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-17527
Reference (s):
- https://security.netapp.com/advisory/ntap-20201210-0003/
- URL: https://security.netapp.com/advisory/ntap-20201210-0003/
- DEBIAN:DSA-4835
- URL: https://www.debian.org/security/2021/dsa-4835
- GENTOO:GLSA-202012-23