| Name | CVE-2020-12244 |
| Description | An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated in SyncRes::processAnswer, allowing an attacker to bypass DNSSEC validation. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-4691-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| pdns-recursor (PTS) | bullseye | 4.4.2-3 | fixed |
| bookworm, bookworm (security) | 4.8.8-1+deb12u1 | fixed | |
| trixie | 5.2.4-2 | fixed | |
| trixie (security) | 5.2.6-0+deb13u1 | fixed | |
| forky, sid | 5.3.1-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| pdns-recursor | source | jessie | (not affected) | |||
| pdns-recursor | source | buster | 4.1.11-1+deb10u1 | DSA-4691-1 | ||
| pdns-recursor | source | (unstable) | 4.3.1-1 |
[jessie] - pdns-recursor <not-affected> (Vulnerable code added later)
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-02.html
https://www.openwall.com/lists/oss-security/2020/05/19/3