Ubuntu 12.04 LTS / 14.04 LTS / 14.10 / 15.04 : dnsmasq vulnerability (USN-2593-1)

Medium Nessus Plugin ID 83252


The remote Ubuntu host is missing one or more security-related patches.


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.


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

Plugin Details

Severity: Medium

ID: 83252

File Name: ubuntu_USN-2593-1.nasl

Version: $Revision: 2.5 $

Type: local

Agent: unix

Published: 2015/05/05

Modified: 2016/05/24

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 6.4

Temporal Score: 4.7

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

Temporal Vector: CVSS2#E:U/RL:OF/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:12.04:-:lts, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:14.10, cpe:/o:canonical:ubuntu_linux:15.04

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2015/05/04

Reference Information

CVE: CVE-2015-3294

OSVDB: 121174

USN: 2593-1