CentOS 6 : dnsmasq (CESA-2017:2838)

High Nessus Plugin ID 103606

Synopsis

The remote CentOS host is missing one or more security updates.

Description

An update for dnsmasq is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The dnsmasq packages contain Dnsmasq, a lightweight DNS (Domain Name Server) forwarder and DHCP (Dynamic Host Configuration Protocol) server.

Security Fix(es) :

* A heap buffer overflow was found in dnsmasq in the code responsible for building DNS replies. An attacker could send crafted DNS packets to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. (CVE-2017-14491)

Red Hat would like to thank Felix Wilhelm (Google Security Team), Fermin J. Serna (Google Security Team), Gabriel Campana (Google Security Team), Kevin Hamacher (Google Security Team), and Ron Bowes (Google Security Team) for reporting this issue.

Solution

Update the affected dnsmasq packages.

See Also

http://www.nessus.org/u?bd78a8aa

Plugin Details

Severity: High

ID: 103606

File Name: centos_RHSA-2017-2838.nasl

Version: 3.14

Type: local

Agent: unix

Published: 2017/10/03

Updated: 2019/10/02

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.5

Temporal Score: 5.9

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

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: p-cpe:/a:centos:centos:dnsmasq, p-cpe:/a:centos:centos:dnsmasq-utils, cpe:/o:centos:centos:6

Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2017/10/02

Vulnerability Publication Date: 2017/10/04

Exploitable With

Core Impact

Reference Information

CVE: CVE-2017-14491

RHSA: 2017:2838

IAVA: 2017-A-0284