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Scientific Linux Security Update : dhcp on SL6.x i386/x86_64 (20120803)

medium Nessus Plugin ID 61428

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Synopsis

The remote Scientific Linux host is missing one or more security updates.

Description

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)

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 packages.

See Also

http://www.nessus.org/u?c48ff67a

Plugin Details

Severity: Medium

ID: 61428

File Name: sl_20120803_dhcp_on_SL6_x.nasl

Version: 1.6

Type: local

Agent: unix

Published: 8/6/2012

Updated: 1/14/2021

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 6.1

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

Vulnerability Information

CPE: p-cpe:/a:fermilab:scientific_linux:dhclient, p-cpe:/a:fermilab:scientific_linux:dhcp, p-cpe:/a:fermilab:scientific_linux:dhcp-common, p-cpe:/a:fermilab:scientific_linux:dhcp-debuginfo, p-cpe:/a:fermilab:scientific_linux:dhcp-devel, x-cpe:/o:fermilab:scientific_linux

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

Patch Publication Date: 8/3/2012

Vulnerability Publication Date: 7/25/2012

Reference Information

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