DescriptionIf a web application sends a WebSocket message concurrently with the WebSocket connection closing when running on Apache Tomcat 8.5.0 to 8.5.75 or Apache Tomcat 9.0.0.M1 to 9.0.20, it is possible that the application will continue to use the socket after it has been closed. The error handling triggered in this case could cause the a pooled object to be placed in the pool twice. This could result in subsequent connections using the same object concurrently which could result in data being returned to the wrong use and/or other errors.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
tomcat8 (PTS)stretch8.5.54-0+deb9u1vulnerable
stretch (security)8.5.54-0+deb9u8vulnerable
tomcat9 (PTS)buster, buster (security)9.0.31-1~deb10u6fixed
bullseye, bullseye (security)9.0.43-2~deb11u3fixed
bookworm, sid9.0.63-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[stretch] - tomcat8 <ignored> (Possibly backwards incompatible changes) (9.0.21) (9.0.21) (9.0.21) (9.0.21) (8.5.76)

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