CVE-2017-14492

Publication date 2 October 2017

Last updated 25 August 2025

Ubuntu priority

High

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

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.

Status

Package Ubuntu Release Status
dnsmasq 17.04 zesty
Fixed 2.76-5ubuntu0.1
16.04 LTS xenial
Fixed 2.75-1ubuntu0.16.04.3
14.04 LTS trusty
Fixed 2.68-1ubuntu0.2

Severity score breakdown

Parameter Value
Base score 9.8 · Critical
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-3430-1
    • Dnsmasq vulnerabilities
    • 2 October 2017
    • USN-3430-2
    • Dnsmasq vulnerabilities
    • 3 October 2017

Other references