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CVE-2017-14491

CriticalPublished

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...

Published: Oct 2, 2017
Updated: Aug 5, 2024
Assigning CNA: mitre
Evidence observed: Oct 2, 2017

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS probability estimate

84.9%

High · next 30 days

Percentile: 99.7%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

dnsmasq-2.4.1-fix-CVE-2017-14491Patch
Patch for CVE-2017-14491 in dnsmasq 2.4.1, fixing a heap-based buffer overflow in DNS response handling to prevent remote code execution.
Dnsmasq < 2.78 - 2-byte Heap OverflowExploit
Google Security Research · multiple · Oct 2, 2017

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