DescriptionA vulnerability was found in the implementation of DNSSEC in Dnsmasq up to and including 2.78. Wildcard synthesized NSEC records could be improperly interpreted to prove the non-existence of hostnames that actually exist.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
Debian Bugs888200

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
dnsmasq (PTS)buster, buster (security)2.80-1+deb10u1fixed
bookworm, sid2.89-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[stretch] - dnsmasq <no-dsa> (Minor issue)
[jessie] - dnsmasq <no-dsa> (Minor issue)
[wheezy] - dnsmasq <no-dsa> (Minor issue);a=commitdiff;h=4fe6744a220eddd3f1749b40cac3dfc510787de6;a=commitdiff;h=cd7df612b14ec1bf831a966ccaf076be0dae7404

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