CVE-2017-14492

critical
Published 2017-10-03 · Modified 2026-05-13
CVSS v3
9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2
7.5
VIR risk
9.8

Description

Heap-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted IPv6 router advertisement request.

Predictions

Exploit likelihood
97%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2017-14492

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2017-14492.html

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://access.redhat.com/errata/RHSA-2017:2837

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://access.redhat.com/errata/RHSA-2017:2836

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — http://thekelleys.org.uk/dnsmasq/CHANGELOG

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-201710-1

OS impact

OSVersionStatusFixed in
arch archfixed2.78-1
suse slesaffected
debian debianbookwormfixed2.78-1
debian debianbullseyefixed2.78-1
debian debianforkyfixed2.78-1
debian debiansidfixed2.78-1
debian debiantrixiefixed2.78-1
ubuntu ubuntu14.04affected
ubuntu ubuntu16.04affected
ubuntu ubuntu17.04affected
debian debian7.0affected
debian debian7.1affected
debian debian9.0affected
redhat rhel7.0affected

Application impact

VendorProductVersionsFixed
thekelleysdnsmasq{"endIncluding":"2.77"}

References

CWEs

CWE-119

Verify integrity in audit chain (admin only). AS-IS.