CVE-2023-26437

NameCVE-2023-26437
DescriptionDenial of service vulnerability in PowerDNS Recursor allows authoritative servers to be marked unavailable.This issue affects Recursor: through 4.6.5, through 4.7.4 , through 4.8.3.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1033941

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
pdns-recursor (PTS)jessie, jessie (lts)3.6.2-2+deb8u4vulnerable
buster (security), buster, buster (lts)4.1.11-1+deb10u2vulnerable
bullseye4.4.2-3vulnerable
bookworm (security), bookworm4.8.8-1fixed
sid, trixie5.0.9-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
pdns-recursorsourcejessie(unfixed)end-of-life
pdns-recursorsourcebullseye(unfixed)end-of-life
pdns-recursorsource(unstable)4.8.4-11033941

Notes

[bullseye] - pdns-recursor <end-of-life> (No longer supported with security updates in Bullseye)
[buster] - pdns-recursor <no-dsa> (Minor issue)
https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2023-02.html
https://github.com/PowerDNS/pdns/commit/94fccab63457f8327add3a8e1e2b7876234e4989 (rec-4.6.6)
https://github.com/PowerDNS/pdns/commit/5174c955a5c320849e6fe12471b7fce1c31ca2a8 (rec-4.7.5)
https://github.com/PowerDNS/pdns/commit/cd279418d3b3151ab3b489e68bb5354138220e2f (rec-4.8.4)

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