An issue has been found in dnsdist before 1.2.0 in the way EDNS0 OPT records are handled when parsing responses from a backend
Published Sep 11, 2018
7.5
HIGHCVSS 3.0
EPSS 4.58%
Description
An issue has been found in dnsdist before 1.2.0 in the way EDNS0 OPT records are handled when parsing responses from a backend. When dnsdist is configured to add EDNS Client Subnet to a query, the response may contain an EDNS0 OPT record that has to be removed before forwarding the response to the initial client. On a 32-bit system, the pointer arithmetic used when parsing the received response to remove that record might trigger an undefined behavior leading to a crash.
Affected products
-
- Version 1.2.0StatusaffectedConstraints-
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Open-Xchange | 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:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/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 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.58% (0.04580) | 91.34th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.54% (0.04541) | 90.31th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.04% (0.00042) | 9.98th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.25% (0.00247) | 65.23th | v3 (v2023.03.01) |
| Jun 26, 2024 | 0.25% (0.00247) | 64.94th | v3 (v2023.03.01) |
| Apr 30, 2024 | 0.35% (0.00351) | 71.53th | v3 (v2023.03.01) |
| Mar 13, 2024 | 0.65% (0.00649) | 78.83th | v3 (v2023.03.01) |
| Oct 10, 2023 | 0.79% (0.00790) | 79.54th | v3 (v2023.03.01) |
| Sep 5, 2023 | 1.11% (0.01108) | 82.72th | v3 (v2023.03.01) |
| Jul 18, 2023 | 0.81% (0.00813) | 79.53th | v3 (v2023.03.01) |
| Jul 8, 2023 | 0.86% (0.00865) | 80.09th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.54% (0.00538) | 73.67th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.95% (0.00954) | 34.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
References (3)
- http://www.securityfocus.com/bid/100509 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7069 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2017-01.html x_refsource_CONFIRMPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/100509 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7069 | x_refsource_CONFIRMIssue TrackingThird Party Advisory | |
| https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2017-01.html | x_refsource_CONFIRMPatchVendor Advisory |
Change history (0)
No recorded changes yet.