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CentOS 5 : dhcp (CESA-2012:1140)

medium Nessus Plugin ID 61400

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Synopsis

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

Description

Updated dhcp packages that fix one security issue are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link 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)

Upstream acknowledges Markus Hietava of the Codenomicon CROSS project as the original reporter of this issue.

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

Solution

Update the affected dhcp packages.

See Also

http://www.nessus.org/u?43037365

Plugin Details

Severity: Medium

ID: 61400

File Name: centos_RHSA-2012-1140.nasl

Version: 1.13

Type: local

Agent: unix

Published: 8/3/2012

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:libdhcp4client, p-cpe:/a:centos:centos:dhcp-devel, p-cpe:/a:centos:centos:libdhcp4client-devel, p-cpe:/a:centos:centos:dhcp, cpe:/o:centos:centos:5

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

BID: 54665

RHSA: 2012:1140