CVE catalog

CVE-2017-9109

adns: CVE-2017-9109

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: Jun 12, 2020, 7:44:06 AM UTC
Source: [NVD] · [CVE record]
EPSS: 1.99% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	adns	sid	`1.7.0-2`	fixed
Debian	adns	forky	`1.7.0-2`	fixed
Debian	adns	trixie	`1.6.1-1`	fixed
Debian	adns	bookworm	`1.6.0-2`	fixed
Ubuntu	adns	16.04	`1.5.0~rc1-1ubuntu1`	vulnerable
Ubuntu	adns	18.04	`1.5.0~rc1-1ubuntu1`	vulnerable
Ubuntu	adns	18.04	`1.5.0~rc1-1.1ubuntu1`	vulnerable
Ubuntu	adns	20.04	`1.5.1-0.1`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	adns	source	sid	`1.6.0-2`	unimportant	Not reported	Not reported
Debian	adns	source	forky	`1.6.0-2`	unimportant	Not reported	Not reported
Debian	adns	source	trixie	`1.6.0-2`	unimportant	Not reported	Not reported
Debian	adns	source	bookworm	`1.6.0-2`	unimportant	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[adns-tools]Fixed
Source package: [adns]
Details (2)
- 1.6.0-2 · amd64 · bookworm
  Fixed · Fixed: 1.6.0-2
  dsa · adns · debian · bookworm; dsa · adns · debian · 12
- 1.6.0-2 · arm64 · bookworm
  Fixed · Fixed: 1.6.0-2
  dsa · adns · debian · bookworm; dsa · adns · debian · 12
[libadns1]Fixed
Source package: [adns]
Details (2)
- 1.6.0-2 · amd64 · bookworm
  Fixed · Fixed: 1.6.0-2
  dsa · adns · debian · bookworm; dsa · adns · debian · 12
- 1.6.0-2 · arm64 · bookworm
  Fixed · Fixed: 1.6.0-2
  dsa · adns · debian · bookworm; dsa · adns · debian · 12
[libadns1-dbg]Fixed
Source package: [adns]
Details (2)
- 1.6.0-2 · amd64 · bookworm
  Fixed · Fixed: 1.6.0-2
  dsa · adns · debian · bookworm; dsa · adns · debian · 12
- 1.6.0-2 · arm64 · bookworm
  Fixed · Fixed: 1.6.0-2
  dsa · adns · debian · bookworm; dsa · adns · debian · 12
[libadns1-dev]Fixed
Source package: [adns]
Details (2)
- 1.6.0-2 · amd64 · bookworm
  Fixed · Fixed: 1.6.0-2
  dsa · adns · debian · bookworm; dsa · adns · debian · 12
- 1.6.0-2 · arm64 · bookworm
  Fixed · Fixed: 1.6.0-2
  dsa · adns · debian · bookworm; dsa · adns · debian · 12

[Debian 13 (Trixie)]

[adns-tools]Fixed
Source package: [adns]
Details (2)
- 1.6.1-1 · amd64 · trixie
  Fixed · Fixed: 1.6.0-2
  dsa · adns · debian · 13
- 1.6.1-1+b1 · arm64 · trixie
  Fixed · Fixed: 1.6.0-2
  dsa · adns · debian · 13
[libadns1-dbg]Fixed
Source package: [adns]
Details (2)
- 1.6.1-1 · amd64 · trixie
  Fixed · Fixed: 1.6.0-2
  dsa · adns · debian · 13
- 1.6.1-1+b1 · arm64 · trixie
  Fixed · Fixed: 1.6.0-2
  dsa · adns · debian · 13
[libadns1-dev]Fixed
Source package: [adns]
Details (2)
- 1.6.1-1 · amd64 · trixie
  Fixed · Fixed: 1.6.0-2
  dsa · adns · debian · 13
- 1.6.1-1+b1 · arm64 · trixie
  Fixed · Fixed: 1.6.0-2
  dsa · adns · debian · 13
[libadns1t64]Fixed
Source package: [adns]
Details (2)
- 1.6.1-1 · amd64 · trixie
  Fixed · Fixed: 1.6.0-2
  dsa · adns · debian · 13
- 1.6.1-1+b1 · arm64 · trixie
  Fixed · Fixed: 1.6.0-2
  dsa · adns · debian · 13

Observed: Oct 23, 2026, 5:31:50 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]