| Name | CVE-2023-26437 |
| Description | Denial 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1033941 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| pdns-recursor (PTS) | buster, buster (security) | 4.1.11-1+deb10u1 | vulnerable |
| bullseye | 4.4.2-3 | vulnerable |
| bookworm | 4.8.4-1 | fixed |
| bookworm (security) | 4.8.7-1 | fixed |
| trixie | 4.9.3-1 | fixed |
| sid | 4.9.4-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[bullseye] - pdns-recursor <no-dsa> (Minor issue)
[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)