DescriptionAfter a HelloRetryRequest has been sent, the client may negotiate a lower protocol that TLS 1.3, resulting in an invalid state transition in the TLS State Machine. If the client gets into this state, incoming Application Data records will be ignored. This vulnerability affects Firefox < 72.
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)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid78.0.1-1fixed
nss (PTS)stretch (security), stretch2:3.26.2-1.1+deb9u1vulnerable
buster, buster (security)2:3.42.1-1+deb10u2vulnerable
bullseye, sid2:3.53.1-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
nsssourcejessie(not affected)


[jessie] - nss <not-affected> (Vulnerable code was introduced later)

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