| Name | CVE-2020-25829 |
| Description | An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This results in a denial of service for installation that always validate (dnssec=validate), and for clients requesting validation when on-demand validation is enabled (dnssec=process). |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3855-1 |
| Debian Bugs | 972159 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| pdns-recursor (PTS) | jessie, jessie (lts) | 3.6.2-2+deb8u4 | vulnerable |
| buster (security), buster, buster (lts) | 4.1.11-1+deb10u2 | fixed | |
| bullseye | 4.4.2-3 | fixed | |
| bookworm (security), bookworm | 4.8.8-1 | fixed | |
| sid, trixie | 5.1.3-1 | 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 | (unfixed) | end-of-life | ||
| pdns-recursor | source | buster | 4.1.11-1+deb10u2 | DLA-3855-1 | ||
| pdns-recursor | source | (unstable) | 4.3.5-1 | 972159 |
[buster] - pdns-recursor <no-dsa> (Minor issue)
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-07.html
https://github.com/PowerDNS/pdns/commit/77409aab0be43071b365760213894d6388c3df30 (rec-4.1.18)