CVE-2017-14493

CRITICAL

dnsmasq <2.78 - Buffer Overflow

Title source: llm

Description

Stack-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 DHCPv6 request.

Exploits (2)

exploitdb WORKING POC VERIFIED

by Google Security Research · pythondosmultiple

https://www.exploit-db.com/exploits/42943

View Code ZIP pw:eip

nomisec WORKING POC 4 stars

by pupiles · poc

https://github.com/pupiles/bof-dnsmasq-cve-2017-14493

View Code ZIP pw:eip

References (20)

[Various Sources] http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=3d4ff1ba8419546490b464418223132529514033

[Various Sources] http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-005.txt

[Third Party Advisory] http://www.ubuntu.com/usn/USN-3430-1

[Third Party Advisory] http://www.ubuntu.com/usn/USN-3430-2

[Issue Tracking, Mailing List, Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00006.html

[Third Party Advisory] http://nvidia.custhelp.com/app/answers/detail/a_id/4561

[Release Notes, Vendor Advisory] http://thekelleys.org.uk/dnsmasq/CHANGELOG

[Third Party Advisory] http://www.debian.org/security/2017/dsa-3989

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/101085

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1039474

[Patch, Third Party Advisory] https://access.redhat.com/errata/RHSA-2017:2836

[Patch, Third Party Advisory] https://access.redhat.com/errata/RHSA-2017:2837

[Issue Tracking, Third Party Advisory] https://access.redhat.com/security/vulnerabilities/3199382

[Third Party Advisory] https://security.gentoo.org/glsa/201710-27

[Third Party Advisory] https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html

[Exploit, Third Party Advisory, VDB Entry] https://www.exploit-db.com/exploits/42943/

[Third Party Advisory, US Government Resource] https://www.kb.cert.org/vuls/id/973527

[Mailing List] https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11664.html

[Mailing List] https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11665.html

[Third Party Advisory] https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq

Scores

CVSS v3 9.8

EPSS 0.0534

EPSS Percentile 90.1%

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 (12)

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

opensuse/leap 42.2

opensuse/leap 42.3

redhat/enterprise_linux_desktop 7.0

redhat/enterprise_linux_server 7.0

... and 2 more

Published Oct 03, 2017

Tracked Since Feb 18, 2026