An issue has been found in PowerDNS DNSDist before 1.3.3 allowing a remote attacker to craft a DNS query with trailing data such that the addition of a record by dnsdist, for example an OPT record when adding EDNS Client Subnet, might result in the trailing data being smuggled to the backend as a valid record while not seen by dnsdist
Published Nov 26, 2018
5.9
MEDIUMCVSS 3.0
EPSS 2.57%
Description
An issue has been found in PowerDNS DNSDist before 1.3.3 allowing a remote attacker to craft a DNS query with trailing data such that the addition of a record by dnsdist, for example an OPT record when adding EDNS Client Subnet, might result in the trailing data being smuggled to the backend as a valid record while not seen by dnsdist. This is an issue when dnsdist is deployed as a DNS Firewall and used to filter some records that should not be received by the backend. This issue occurs only when either the 'useClientSubnet' or the experimental 'addXPF' parameters are used when declaring a new backend.
Affected products
- Vendor n/a Product Dnsdist Defaultn/a
- Version 1.3.3StatusaffectedConstraints-
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Dnsdist | 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:N/UI:N/S:U/C:N/I:H/A:N
AV:N/AC:M/Au:N/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 v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.57% (0.02572) | 84.61th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.48% (0.02477) | 82.42th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.16% (0.00160) | 53.07th | v3 (v2023.03.01) |
| Jun 26, 2024 | 0.16% (0.00160) | 52.87th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.16% (0.00160) | 50.86th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.05% (0.01055) | 50.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.78% (0.00785) | 22.12th | v1 |
| Jan 6, 2022 | 0.78% (0.00785) | 21.52th | v1 |
| Sep 1, 2021 | 0.78% (0.00785) | 52.07th | v1 |
| Apr 14, 2021 | 0.78% (0.00785) | 0.00th | v1 |
References (2)
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14663 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2018-08.html x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14663 | x_refsource_CONFIRMIssue TrackingThird Party Advisory | |
| https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2018-08.html | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.