CVE-2017-14492

CRITICAL

dnsmasq <2.78 - Buffer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-14492. PoCs published by Google Security Research.

AI-analyzed exploit summary This exploit triggers a heap-based buffer overflow in dnsmasq via a malformed ICMPv6 Router Solicitation packet with an oversized source MAC option. It causes a segmentation fault, demonstrating the vulnerability described in CVE-2017-14492.

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.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · pythondosmultiple
https://www.exploit-db.com/exploits/42942

This exploit triggers a heap-based buffer overflow in dnsmasq via a malformed ICMPv6 Router Solicitation packet with an oversized source MAC option. It causes a segmentation fault, demonstrating the vulnerability described in CVE-2017-14492.

Classification
Working Poc 100%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: dnsmasq versions prior to 2.78
No auth needed
Prerequisites: Network access to the target's IPv6 interface · Target running dnsmasq with DHCPv6 enabled
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (20)

Core 20
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1039474
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2017/dsa-3989
Issue Tracking, Third Party Advisory x_refsource_confirm
https://access.redhat.com/security/vulnerabilities/3199382
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/101085
Third Party Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-3430-1
Third Party Advisory, US Government Resource third-party-advisory x_refsource_cert-vn
https://www.kb.cert.org/vuls/id/973527
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201710-27
Third Party Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-3430-2
Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/42942/
Patch, Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:2836
Vendor Advisory x_refsource_confirm
http://nvidia.custhelp.com/app/answers/detail/a_id/4561
Patch, Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:2837
Release Notes, Vendor Advisory x_refsource_confirm
http://thekelleys.org.uk/dnsmasq/CHANGELOG
Issue Tracking, Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00006.html

Scores

CVSS v3 9.8
EPSS 0.9331
EPSS Percentile 99.8%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-119
Status published
Products (10)
canonical/ubuntu_linux 14.04
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 17.04
debian/debian_linux 7.0
debian/debian_linux 7.1
debian/debian_linux 9.0
redhat/enterprise_linux_desktop 7.0
redhat/enterprise_linux_server 7.0
redhat/enterprise_linux_workstation 7.0
thekelleys/dnsmasq < 2.77
Published Oct 03, 2017
Tracked Since Feb 18, 2026