Is CVE-2017-13704 actively exploited?

CVE-2017-13704 has no public evidence of in-the-wild exploitation as of 2025-04-20.

What is the CVSS score for CVE-2017-13704?

CVE-2017-13704 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-2017-13704?

Patch guidance is available from canonical security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2017-13704.

Fix CVE-2017-13704 - HIGH canonical ubuntu linux

Q: Which products are affected by CVE-2017-13704?

13 products: canonical ubuntu linux, canonical ubuntu linux, canonical ubuntu linux, debian debian linux, debian debian linux, and 8 more.

Description

In dnsmasq before 2.78, if the DNS packet size does not match the expected size, the size parameter in a memset call gets a negative value. As it is an unsigned value, memset ends up writing up to 0xffffffff zero's (0xffffffffffffffff in 64 bit platforms), making dnsmasq crash.

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-20 · Improper Input Validation

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_linuxfedoraproject : fedoranovell : leapnovell : leapredhat : enterprise_linux_desktopredhat : enterprise_linux_serverredhat : enterprise_linux_workstationthekelleys : dnsmasq

Remediation Guidance

Executive Summary

View on NIST NVD