Ubuntu 14.04 LTS : Dnsmasq vulnerability (USN-2593-1)

critical Nessus Plugin ID 83252

Synopsis

The remote Ubuntu host is missing a security update.

Description

Nick Sampanis discovered that Dnsmasq incorrectly handled certain malformed DNS requests. A remote attacker could use this issue to cause Dnsmasq to crash, resulting in a denial of service, or possibly obtain sensitive information.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected dnsmasq, dnsmasq-base and / or dnsmasq-utils packages.

See Also

https://ubuntu.com/security/notices/USN-2593-1

Plugin Details

Severity: Critical

ID: 83252

File Name: ubuntu_USN-2593-1.nasl

Version: 2.11

Type: local

Agent: unix

Published: 5/5/2015

Updated: 10/20/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:P

CVSS Score Source: CVE-2015-3294

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.2

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:dnsmasq, p-cpe:/a:canonical:ubuntu_linux:dnsmasq-base, p-cpe:/a:canonical:ubuntu_linux:dnsmasq-utils, cpe:/o:canonical:ubuntu_linux:14.04:-:lts

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/4/2015

Vulnerability Publication Date: 5/8/2015

Reference Information

CVE: CVE-2015-3294

USN: 2593-1