Is CVE-2017-14496 actively exploited?

CVE-2017-14496 has no public evidence of in-the-wild exploitation as of 2025-04-20.

What is the CVSS score for CVE-2017-14496?

CVE-2017-14496 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

How do I patch CVE-2017-14496?

Patch guidance is available from canonical security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2017-14496.

Fix CVE-2017-14496 - HIGH canonical ubuntu linux

Q: Which products are affected by CVE-2017-14496?

21 products: canonical ubuntu linux, canonical ubuntu linux, canonical ubuntu linux, debian debian linux, debian debian linux, and 16 more.

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.

CVSS Metrics

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-191

Metadata

Primary Vendor: CANONICAL
Published: 10/3/2017
Last Modified: 4/20/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

canonical : ubuntu_linuxcanonical : ubuntu_linuxcanonical : ubuntu_linuxdebian : debian_linuxdebian : debian_linuxdebian : debian_linuxgoogle : androidgoogle : androidgoogle : androidgoogle : androidgoogle : androidgoogle : androidgoogle : androidgoogle : androidgoogle : androidnovell : leapnovell : leapredhat : enterprise_linux_desktopredhat : enterprise_linux_serverredhat : enterprise_linux_workstationthekelleys : dnsmasq

Remediation Guidance

Executive Summary

View on NIST NVD