DSA-5665-1 tomcat10 – security update

Debian Security Advisory

Several security vulnerabilities have been discovered in the Tomcat
servlet and JSP engine.


Tomcat 10 did not correctly parse HTTP trailer headers. A trailer header
that exceeded the header size limit could cause Tomcat to treat a single
request as multiple requests leading to the possibility of request
smuggling when behind a reverse proxy.


Denial of Service due to improper input validation vulnerability for
HTTP/2. When processing an HTTP/2 request, if the request exceeded any of
the configured limits for headers, the associated HTTP/2 stream was not
reset until after all of the headers had been processed.


Denial of Service via incomplete cleanup vulnerability. It was possible
for WebSocket clients to keep WebSocket connections open leading to
increased resource consumption.



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