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No exploitation reportedFix available

CVE-2017-15105

No exploitation reported by the sources we read.

  • Published2018-01-23
  • WeaknessCWE-20 · CWE-358

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A flaw was found in the way unbound before 1.6.8 validated wildcard-synthesized NSEC records. An improperly validated wildcard NSEC record could be used to prove the non-existence (NXDOMAIN answer) of an existing wildcard record, or trick unbound into accepting a NODATA proof.

Timeline

dates in UTC
  1. 2018-01-2316:29CVE publishedNVD

Versions per branch

NVD
Canonical ubuntu linux
BranchAffectedFixed in
14.4= 14.04no fix published
16.4= 16.04no fix published
17.10= 17.10no fix published
18.4= 18.04no fix published
Debian debian linux
BranchAffectedFixed in
7.0= 7.0no fix published
8.0= 8.0no fix published
Nlnetlabs unbound
BranchAffectedFixed in
1.6< 1.6.81.6.8

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • unboundUbuntu:18.04:LTSall versions · fixed in 1.6.7-1ubuntu2.1
  • unboundUbuntu:16.04:LTSall versions · fixed in 1.5.8-1ubuntu1.1
  • unboundUbuntu:14.04:LTSall versions · fixed in 1.4.22-1ubuntu4.14.04.3
  • unboundopenSUSE:Tumbleweedall versions · fixed in 1.13.2-1.2
  • unboundMageia:6all versions · fixed in 1.6.8-1.mga6
  • unboundDebian:14all versions · fixed in 1.7.1-1
  • unboundDebian:13all versions · fixed in 1.7.1-1
  • unboundDebian:12all versions · fixed in 1.7.1-1

2 more package ranges on OSV.dev

Vendor advisories

  • CVE-2017-15105 Red Hat Product Security5 known affected

    unbound: Improper validation of wildcard synthesized NSEC records

    unbound as a component of Red Hat Enterprise Linux 7 · unbound-devel as a component of Red Hat Enterprise Linux 7 · unbound-libs as a component of Red Hat Enterprise Linux 7 · +2 more

Full record on NVD

Fix

  1. No fix planned, says the vendor Red Hat Product Security CVE-2017-15105 · 5 productsWill not fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.05.3read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • CNAweakness (CWE)CWE-358known since 2026-10-23
  • NVDweakness (CWE)CWE-20read 2026-10-23
  • FIRST EPSSEPSS score3.2 %2026-11-09
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Published
2018-01-23
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-8hp4-8fgw-m69h

Frequently asked questions

What is CVE-2017-15105?

A flaw was found in the way unbound before 1.6.8 validated wildcard-synthesized NSEC records. An improperly validated wildcard NSEC record could be used to prove the non-existence (NXDOMAIN answer) of an existing wildcard record, or trick unbound into accepting a NODATA proof.

Is CVE-2017-15105 actively exploited?

Active exploitation of CVE-2017-15105 has not been confirmed. Its EPSS score was 3.2% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2017-15105?

CVE-2017-15105 has a CVSS v3 base score of 5.3 (MEDIUM severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

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