CentOS 6 : dhcp (CESA-2012:1141)

medium Nessus Plugin ID 61437

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Synopsis

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

Description

Updated dhcp packages that fix three security issues are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows individual devices on an IP network to get their own network configuration information, including an IP address, a subnet mask, and a broadcast address.

A denial of service flaw was found in the way the dhcpd daemon handled zero-length client identifiers. A remote attacker could use this flaw to send a specially crafted request to dhcpd, possibly causing it to enter an infinite loop and consume an excessive amount of CPU time.
(CVE-2012-3571)

Two memory leak flaws were found in the dhcpd daemon. A remote attacker could use these flaws to cause dhcpd to exhaust all available memory by sending a large number of DHCP requests. (CVE-2012-3954)

Upstream acknowledges Markus Hietava of the Codenomicon CROSS project as the original reporter of CVE-2012-3571, and Glen Eustace of Massey University, New Zealand, as the original reporter of CVE-2012-3954.

Users of DHCP should upgrade to these updated packages, which contain backported patches to correct these issues. After installing this update, all DHCP servers will be restarted automatically.

Solution

Update the affected dhcp packages.

Plugin Details

Severity: Medium

ID: 61437

File Name: centos_RHSA-2012-1141.nasl

Version: 1.14

Type: local

Agent: unix

Family: CentOS Local Security Checks

Published: 8/7/2012

Updated: 1/4/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.8

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

CVSS Score Source: CVE-2012-3571

Vulnerability Information

CPE: p-cpe:/a:centos:centos:dhclient, p-cpe:/a:centos:centos:dhcp-devel, cpe:/o:centos:centos:6, p-cpe:/a:centos:centos:dhcp-common, p-cpe:/a:centos:centos:dhcp

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: 8/2/2012

Vulnerability Publication Date: 7/25/2012

Reference Information

CVE: CVE-2012-3571, CVE-2012-3954

BID: 54665

RHSA: 2012:1141

Detections

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