An issue has been found in the parsing of authoritative answers in PowerDNS Recursor before 4.0.8, leading to a NULL pointer dereference when parsing a specially crafted answer containing a CNAME of a different class than IN
Published Jul 27, 2018
7.5
HIGHCVSS 3.0
EPSS 51.35%
Description
An issue has been found in the parsing of authoritative answers in PowerDNS Recursor before 4.0.8, leading to a NULL pointer dereference when parsing a specially crafted answer containing a CNAME of a different class than IN. An unauthenticated remote attacker could cause a denial of service.
Affected products
-
- Version 4.0.8StatusaffectedConstraints-
- 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 | Pdns-Recursor | n/a |
|
Configuration 2
- 8.0
- 9.0
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:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:P
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 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 51.35% (0.51353) | 98.91th | v5 (v2026.06.15) |
| Jun 15, 2026 | 51.79% (0.51790) | 98.81th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.01% (0.01015) | 75.60th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.45% (0.00454) | 76.03th | v3 (v2023.03.01) |
| Aug 13, 2024 | 0.45% (0.00454) | 75.58th | v3 (v2023.03.01) |
| Aug 10, 2024 | 1.77% (0.01773) | 88.22th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.45% (0.00454) | 74.47th | v3 (v2023.03.01) |
| Dec 18, 2023 | 0.45% (0.00454) | 72.46th | v3 (v2023.03.01) |
| Jul 21, 2023 | 0.55% (0.00551) | 74.47th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.47% (0.00471) | 71.81th | v3 (v2023.03.01) |
| Mar 6, 2023 | 7.18% (0.07176) | 92.30th | v2 (v2022.01.01) |
| Apr 1, 2022 | 7.18% (0.07176) | 91.55th | v2 (v2022.01.01) |
| Feb 4, 2022 | 7.18% (0.07176) | 80.33th | v2 (v2022.01.01) |
| Feb 3, 2022 | 8.17% (0.08166) | 85.27th | v1 |
| Jan 6, 2022 | 8.17% (0.08166) | 85.09th | v1 |
| Sep 1, 2021 | 8.17% (0.08166) | 92.67th | v1 |
| Apr 14, 2021 | 8.17% (0.08166) | 0.00th | v1 |
References (5)
- http://seclists.org/oss-sec/2017/q4/382 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/106335 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15120 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-08.html x_refsource_CONFIRMPatchVendor Advisory
- https://www.debian.org/security/2017/dsa-4063 vendor-advisoryx_refsource_DEBIANThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://seclists.org/oss-sec/2017/q4/382 | mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory | |
| http://www.securityfocus.com/bid/106335 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15120 | x_refsource_CONFIRMIssue TrackingThird Party Advisory | |
| https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-08.html | x_refsource_CONFIRMPatchVendor Advisory | |
| https://www.debian.org/security/2017/dsa-4063 | vendor-advisoryx_refsource_DEBIANThird Party Advisory |
Change history (0)
No recorded changes yet.