Description
In PowerDNS Authoritative Server before 4.4.3, 4.5.x before 4.5.4, and 4.6.x before 4.6.1 and PowerDNS Recursor before 4.4.8, 4.5.x before 4.5.8, and 4.6.x before 4.6.1, insufficient validation of an IXFR end condition causes incomplete zone transfers to be handled as successful transfers.
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 +1 | 4.6.1-1 | — |
| Debian 13 | pdns +1 | 4.6.1-1 | — |
| Debian 12 | pdns +1 | 4.6.1-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | pdns | 4.5.3-1ubuntu0.1~esm1 | USN-7203-1 |
| Ubuntu Pro 22.04 LTS | pdns-recursor | 4.6.0-1ubuntu1+esm1 | USN-7203-1 |
| Ubuntu Pro 20.04 LTS | pdns +1 | 4.2.1-1ubuntu0.1~esm1 | USN-7203-1 |
| Ubuntu Pro 18.04 LTS | pdns | 4.1.1-1ubuntu0.1~esm1 | USN-7203-1 |
| Ubuntu Pro 18.04 LTS | pdns-recursor | 4.1.1-2ubuntu0.1~esm1 | USN-7203-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | pdns | 4.0.0~alpha2-3ubuntu0.1~esm1 | USN-7203-1 |
| Ubuntu Pro 16.04 LTS | pdns-recursor | 4.0.0~alpha2-2ubuntu0.1+esm1 | USN-7203-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP3 | pdns-recursor | 4.3.5-bp153.2.3.1 | openSUSE-SU-2022:0105-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | pdns +1 | 4.6.1-1.1 | openSUSE-SU-2024:11955-1, openSUSE-SU-2024:11954-1 |
| openSUSE Leap 15.3 | pdns-recursor | 4.3.5-bp153.2.3.1 | openSUSE-SU-2022:0105-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | pdns +1 | 4.6.1-r0 | — |
| Alpine v3.23 | pdns +1 | 4.6.1-r0 | — |
| Alpine v3.22 | pdns +1 | 4.6.1-r0 | — |
| Alpine v3.21 | pdns +1 | 4.6.1-r0 | — |
| Alpine v3.20 | pdns +1 | 4.6.1-r0 | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | pdns +1 | 4.6.1-r0 | — |
| Alpine v3.18 | pdns +1 | 4.6.1-r0 | — |
| Alpine v3.17 | pdns +1 | 4.6.1-r0 | — |
| Alpine v3.16 | pdns +1 | 4.6.1-r0 | — |
| Alpine v3.15 | pdns | 4.5.4-r0 | — |
| Alpine v3.15 | pdns-recursor | 4.5.8-r0 | — |
Advisories 5
- USN-7203-1 pdns, pdns-recursor vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- openSUSE-SU-2024:11954-1 pdns-4.6.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11955-1 pdns-recursor-4.6.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2022:0105-1 Security update for pdns-recursor SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-0842 PowerDNS: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Jan 14, 2025
References
- https://docs.powerdns.com/recursor/security-advisories/index.html
- https://doc.powerdns.com/authoritative/security-advisories/index.html
- https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2022-01.html
- https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2022-01.html
- [oss-security] 20220325 Security Advisory 2022-01 for PowerDNS Authoritative Server 4.4.2, 4.5.3, 4.6.0 and PowerDNS Recursor 4.4.7, 4.5.7, 4.6.0 mailing-list
- FEDORA-2022-8367cefdea vendor-advisory
- FEDORA-2022-6e19acf414 vendor-advisory
- FEDORA-2022-1df2a841e4 vendor-advisory
- FEDORA-2022-ccfd5d1045 vendor-advisory