CVE-2017-14491

critical
Published 2017-10-04 · Modified 2026-05-13
CVSS v3
9.8
CVSS:3.1/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 DNS response.

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-2017-14491

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2017-14491.html

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://www.arista.com/en/support/advisories-notices/security-advisories/3577-security-advisory-30

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://cert-portal.siemens.com/productcert/pdf/ssa-689071.pdf

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 ubuntu12.04affected
ubuntu ubuntu14.04affected
ubuntu ubuntu16.04affected
ubuntu ubuntu17.04affected
debian debian7.0affected
debian debian7.1affected
debian debian8.0affected
debian debian9.0affected
redhat rhel6.0affected
redhat rhel7.0affected
suse suse42.2affected
suse suse42.3affected
suse suse11affected
suse suse12affected

Application impact

VendorProductVersionsFixed
thekelleysdnsmasq{"endIncluding":"2.77"}
suselinux_enterprise_debuginfo11
suselinux_enterprise_point_of_sale11
nvidia nvidiageforce_experience{"startIncluding":"3.0","endExcluding":"3.10.0.55"}3.10.0.55
synologyrouter_manager1.1

References

CWEs

CWE-787

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