CVE-2020-13935

NameCVE-2020-13935
DescriptionThe payload length in a WebSocket frame was not correctly validated in Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M1 to 9.0.36, 8.5.0 to 8.5.56 and 7.0.27 to 7.0.104. Invalid payload lengths could trigger an infinite loop. Multiple requests with invalid payload lengths could lead to a denial of service.
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)
ReferencesDLA-2286-1, DSA-4727-1
NVD severitymedium

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+deb9u4fixed
tomcat9 (PTS)buster, buster (security)9.0.31-1~deb10u2fixed
bullseye, sid9.0.39-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
tomcat8sourcestretch8.5.54-0+deb9u3DLA-2286-1
tomcat8source(unstable)(unfixed)
tomcat9sourcebuster9.0.31-1~deb10u2DSA-4727-1
tomcat9source(unstable)9.0.37-1

Notes

https://www.openwall.com/lists/oss-security/2020/07/14/3
https://github.com/apache/tomcat/commit/12d715676038efbf9c728af10163f8277fc019d5 (8.5.57)
https://github.com/apache/tomcat/commit/40fa74c74822711ab878079d0a69f7357926723d (9.0.37)

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