CVE-2017-14496

HIGH

dnsmasq <2.78 - DoS

Title source: llm

Description

Integer underflow in the add_pseudoheader function in dnsmasq before 2.78 , when the --add-mac, --add-cpe-id or --add-subnet option is specified, allows remote attackers to cause a denial of service via a crafted DNS request.

Exploits (1)

exploitdb WORKING POC VERIFIED

by Google Security Research · pythondosmultiple

https://www.exploit-db.com/exploits/42946

View Code ZIP pw:eip

References (22)

[Various Sources] http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=897c113fda0886a28a986cc6ba17bb93bd6cb1c7

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

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

[Vendor 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

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

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

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

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

[Vendor Advisory] https://cert-portal.siemens.com/productcert/pdf/ssa-689071.pdf

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

[Third Party Advisory] https://source.android.com/security/bulletin/2017-10-01

[Third Party Advisory, VDB Entry] https://www.exploit-db.com/exploits/42946/

[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

[Various Sources] https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq

... and 2 more

Scores

CVSS v3 7.5

EPSS 0.1574

EPSS Percentile 94.6%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

CWE

CWE-191

Status draft

Affected Products (21)

canonical/ubuntu_linux

debian/debian_linux

google/android

... and 6 more

Timeline

Published Oct 03, 2017

Tracked Since Feb 18, 2026