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Fencer Vulns
high 7.5

CVE-2017-15107 json

A vulnerability was found in the implementation of DNSSEC in Dnsmasq up to and including 2.78.

published 2018-01-23 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-6572

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.6%
EPSS 2.6% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

A vulnerability was found in the implementation of DNSSEC in Dnsmasq up to and including 2.78. Wildcard synthesized NSEC records could be improperly interpreted to prove the non-existence of hostnames that actually exist.

Patch / fix

  • dnsmasq Debian 14, Debian 13, Debian 12 2.79-1

debian advisories DEBIAN-CVE-2017-15107

  • dnsmasq Ubuntu 16.04 LTS 2.75-1ubuntu0.16.04.10

ubuntu advisories UBUNTU-CVE-2017-15107

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • dnsmasq SLE Module for Basesystem 15 SP1 2.78-7.3.1
  • dnsmasq SLE Module for Basesystem 15 2.78-3.8.1
  • dnsmasq SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES 12 SP4 +7 more 2.78-18.6.1
  • dnsmasq SLES 11 SP4-LTSS 2.78-0.17.10.1

suse advisories SUSE-SU-2019:3189-1SUSE-SU-2019:3188-1SUSE-SU-2019:14190-1SUSE-SU-2019:1721-1

  • dnsmasq openSUSE Tumbleweed 2.86-1.1
  • dnsmasq openSUSE Leap 15.1 2.78-lp151.5.3.1

opensuse advisories openSUSE-SU-2024:10721-1openSUSE-SU-2019:2669-1

  • dnsmasq Alpine 3.24, Alpine 3.23, Alpine 3.22 +14 more 2.79-r0
  • dnsmasq Alpine 3.5 2.76-r3
  • dnsmasq Alpine 3.6 2.76-r6
  • dnsmasq Alpine 3.7 2.78-r2

alpine advisories ALPINE-CVE-2017-15107

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • dnsmasq Arch Linux 2.78-2

arch linux advisories AVG-592

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-15107 updated cvss 5.4

dnsmasq: Improper validation of wildcard synthesized NSEC records

  • Red Hat Enterprise Linux 5 dnsmasq Red Hat Enterprise Linux 6 dnsmasq, dnsmasq-utils Red Hat Enterprise Linux 7 dnsmasq, dnsmasq-utils Red Hat Enterprise Linux OpenStack Platform 6 (Juno) dnsmasq Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) dnsmasq-utils Red Hat OpenStack Platform 8 (Liberty) dnsmasq-utils
    +4 more products
    Red Hat OpenStack Platform 9 (Mitaka) dnsmasq-utils Red Hat OpenStack Platform 10 (Newton) dnsmasq-utils Red Hat OpenStack Platform 11 (Ocata) dnsmasq Red Hat OpenStack Platform 12 (Pike) dnsmasq-utils
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.65% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N

Affected products

  • Simon Kelley dnsmasq

Classification

Weakness
  • CWE-358 Improperly Implemented Security Check for Standard

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.