When api-config-dir is set to a non-empty value, which is not the case by default, the API in PowerDNS Recursor 4.x up to and including 4.0.6 and 3.x up to and including 3.7.4 allows an authorized user to update the Recursor's ACL by adding and removing netmasks, and to configure forward zones. It was discovered that the new netmask and IP addresses of forwarded zones were not sufficiently validated, allowing an authenticated user to inject new configuration directives into the Recursor's configuration.
CVSS Details
- CVSS 3.1 Base Score: 5.3
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade pdns-recursor | Jan 23, 2018 | Jan 23, 2018 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jan 23, 2018 |
| Debian | — | Upgrade pdns-recursor | Jul 30, 2024 | Jan 23, 2018 |
| Suse | — | Upgrade pdns-recursor-debuginfoUpgrade pdns-recursorUpgrade pdns-recursor-debugsource | Dec 6, 2017 | Dec 6, 2017 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | Jan 23, 2018 |
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