DescriptionAn issue has been found in the DNSSEC validation component of PowerDNS Recursor from 4.0.0 and up to and including 4.0.6, where the signatures might have been accepted as valid even if the signed data was not in bailiwick of the DNSKEY used to sign it. This allows an attacker in position of man-in-the-middle to alter the content of records by issuing a valid signature for the crafted records.
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 (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
pdns-recursor (PTS)jessie3.6.2-2+deb8u4fixed
jessie (security)3.6.2-2+deb8u3fixed
stretch (security), stretch4.0.4-1+deb9u3fixed
buster, sid4.1.2-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
pdns-recursorsourcejessie(not affected)
pdns-recursorsourcewheezy(not affected)


[jessie] - pdns-recursor <not-affected> (Issue introduced in 4.0.0)
[wheezy] - pdns-recursor <not-affected> (Issue introduced in 4.0.0)

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