RHEL 6 : dnsmasq (RHSA-2017:2839)

critical Nessus Plugin ID 103631

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Synopsis

The remote Red Hat host is missing a security update for dnsmasq.

Description

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2017:2839 advisory.

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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL dnsmasq package based on the guidance in RHSA-2017:2839.

Plugin Details

Severity: Critical

ID: 103631

File Name: redhat-RHSA-2017-2839.nasl

Version: 3.19

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 10/3/2017

Updated: 11/5/2024

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.2

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

CVSS Score Source: CVE-2017-14491

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

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:F/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:dnsmasq-utils, cpe:/o:redhat:rhel_tus:6.6, p-cpe:/a:redhat:enterprise_linux:dnsmasq, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:rhel_aus:6.6, cpe:/o:redhat:rhel_eus:6.7, cpe:/o:redhat:rhel_aus:6.4, cpe:/o:redhat:rhel_aus:6.5, cpe:/o:redhat:rhel_tus:6.5

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/2/2017

Vulnerability Publication Date: 10/4/2017

Exploitable With

Core Impact

Reference Information

CVE: CVE-2017-14491

CWE: 122

IAVA: 2017-A-0284-S

RHSA: 2017:2839

Detections

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