Description
In PowerDNS Recursor versions up to and including 4.3.1, 4.2.2 and 4.1.16, the ACL restricting access to the internal web server is not properly enforced.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | pdns-recursor | 4.3.2-1 | — |
| Debian 13 | pdns-recursor | 4.3.2-1 | — |
| Debian 12 | pdns-recursor | 4.3.2-1 | — |
| Debian 10 | pdns-recursor | 4.1.11-1+deb10u2 | DLA-3855-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | pdns-recursor | No fix yet | — |
| Ubuntu Pro 18.04 LTS | pdns-recursor | No fix yet | — |
| Ubuntu Pro 16.04 LTS | pdns-recursor | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP2 | pdns-recursor | 4.1.12-bp152.2.4.1 | openSUSE-SU-2020:1687-1, openSUSE-SU-2020:1101-1, openSUSE-SU-2020:1055-1 |
| SUSE Package Hub 15 SP1 | pdns-recursor | 4.1.12-bp151.4.6.1 | openSUSE-SU-2020:1687-1, openSUSE-SU-2020:1005-1 |
| SUSE Package Hub 12 SP1 | pdns-recursor | 4.1.12-bp151.4.6.1 | openSUSE-SU-2020:1687-1, openSUSE-SU-2020:1005-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | pdns-recursor | 4.5.5-1.3 | openSUSE-SU-2024:11157-1 |
| openSUSE Leap 15.2 | pdns-recursor | 4.1.12-bp151.4.6.1 | openSUSE-SU-2020:1687-1, openSUSE-SU-2020:1005-1 |
| openSUSE Leap 15.1 | pdns-recursor | 4.1.12-bp151.4.6.1 | openSUSE-SU-2020:1687-1, openSUSE-SU-2020:1005-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | pdns-recursor | 4.3.2-r0 | — |
| Alpine v3.23 | pdns-recursor | 4.3.2-r0 | — |
| Alpine v3.22 | pdns-recursor | 4.3.2-r0 | — |
| Alpine v3.21 | pdns-recursor | 4.3.2-r0 | — |
| Alpine v3.20 | pdns-recursor | 4.3.2-r0 | — |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | pdns-recursor | 4.3.2-r0 | — |
| Alpine v3.18 | pdns-recursor | 4.3.2-r0 | — |
| Alpine v3.17 | pdns-recursor | 4.3.2-r0 | — |
| Alpine v3.16 | pdns-recursor | 4.3.2-r0 | — |
| Alpine v3.15 | pdns-recursor | 4.3.2-r0 | — |
| Alpine v3.14 | pdns-recursor | 4.3.2-r0 | — |
| Alpine v3.13 | pdns-recursor | 4.3.2-r0 | — |
| Alpine v3.12 | pdns-recursor | 4.3.2-r0 | — |
Advisories 7
- DLA-3855-1 pdns-recursor - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2020:1055-1 Security update for pdns-recursor SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:1101-1 Security update for pdns-recursor SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:1687-1 Security update for pdns-recursor SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11157-1 pdns-recursor-4.5.5-1.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:1005-1 Security update for pdns-recursor SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-1480 PowerDNS: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen BSI CERT-Bund (WID) · Jun 30, 2024
References
- https://www.openwall.com/lists/oss-security/2020/07/01/1
- https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-04.html
- openSUSE-SU-2020:1005 vendor-advisory
- openSUSE-SU-2020:1101 vendor-advisory
- openSUSE-SU-2020:1055 vendor-advisory
- FEDORA-2020-1d812d5546 vendor-advisory
- openSUSE-SU-2020:1687 vendor-advisory