CVE-2019-0199

NameCVE-2019-0199
DescriptionThe HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.14 and 8.5.0 to 8.5.37 accepted streams with excessive numbers of SETTINGS frames and also permitted clients to keep streams open without reading/writing request/response data. By keeping streams open for requests that utilised the Servlet API's blocking I/O, clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-4596-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
tomcat9 (PTS)bullseye (security), bullseye9.0.43-2~deb11u10fixed
bookworm9.0.70-2fixed
trixie, sid9.0.95-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
tomcat8sourcejessie(not affected)
tomcat8sourcestretch8.5.50-0+deb9u1DSA-4596-1
tomcat8source(unstable)8.5.38-1
tomcat9source(unstable)9.0.16-1

Notes

[jessie] - tomcat8 <not-affected> (HTTP/2 support not implemented)
https://bugzilla.redhat.com/show_bug.cgi?id=1693325
When fixing this issue make sure to fix it completely to not open CVE-2019-10072.

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