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
Published Jan 23, 2018
5.3
MEDIUMCVSS 3.0
EPSS 0.83%
Description
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.
Affected products
-
- Version 3.x up to and including 3.7.4StatusaffectedConstraints-
- Version 4.x up to and including 4.0.6StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PowerDNS | PowerDNS Recursor | n/a |
|
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
AV:N/AC:M/Au:S/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.83% (0.00828) | 55.95th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.83% (0.00828) | 55.93th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.06% (0.00057) | 24.23th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.06% (0.00057) | 23.75th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.06% (0.00057) | 21.69th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00104) | 40.95th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.62% (0.00624) | 17.80th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.62% (0.00624) | 0.00th | v1 |
References (2)
- http://www.securityfocus.com/bid/101982 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-06.html x_refsource_CONFIRMMitigationPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/101982 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-06.html | x_refsource_CONFIRMMitigationPatchVendor Advisory |
Change history (0)
No recorded changes yet.