CVE-2017-15105

Name: CVE-2017-15105
Creator: NVD / NIST
Published: 2018-01-23T16:29:00.273+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.68%

Last modified Jun 17, 2026

CVE-2017-15105 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 2.68% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

2.68%

83.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nlnetlabs	Unbound	< 1.6.8
Debian	Debian Linux	7.0
Debian	Debian Linux	8.0
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	17.10
Canonical	Ubuntu Linux	18.04

References

http://www.securityfocus.com/bid/102817Third Party Advisory, VDB Entry
https://lists.debian.org/debian-lts-announce/2018/01/msg00039.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00022.htmlMailing List, Third Party Advisory
https://unbound.net/downloads/CVE-2017-15105.txtPatch, Vendor Advisory
https://usn.ubuntu.com/3673-1/Third Party Advisory
http://www.securityfocus.com/bid/102817Third Party Advisory, VDB Entry
https://lists.debian.org/debian-lts-announce/2018/01/msg00039.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00022.htmlMailing List, Third Party Advisory
https://unbound.net/downloads/CVE-2017-15105.txtPatch, Vendor Advisory
https://usn.ubuntu.com/3673-1/Third Party Advisory

Timeline

Published: Jan 23, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-15105?

How severe is CVE-2017-15105?

Severity scoring for CVE-2017-15105 is pending analysis. The EPSS model estimates a 2.68% probability of exploitation in the next 30 days.

How do I fix CVE-2017-15105?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-15105?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST