CVE-2017-9109
An issue was discovered in adns before 1.5.2. It fails to ignore apparent answers before the first RR that was found the first time. when…
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
An issue was discovered in adns before 1.5.2. It fails to ignore apparent answers before the first RR that was found the first time. when this is fixed, the second answer scan finds the same RRs at the first. Otherwise, adns can be confused by interleaving answers for the CNAME target, with the CNAME itself. In that case the answer data structure (on the heap) can be overrun. With this fixed, it prefers to look only at the answer RRs which come after the CNAME, which is at least arguably correct.
Timeline
ID reserved
By mitre
- 3 years later
· 3 years later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 2.0% · top 19% of all CVEs (8 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
n/a
- affected n/a
References (6)
- http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=adns.git (opens in a new tab)x_refsource_MISCx_transferred
- openSUSE-SU-2020:0827 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- https://www.chiark.greenend.org.uk/pipermail/adns-announce/2020/000004.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=adns.git%3Ba=blob%3Bf=changelog (opens in a new tab)x_refsource_CONFIRMx_transferred
- FEDORA-2020-530188bf36 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2020-e59bcaf702 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2017-9109)Record last updated .