RHSA-2012-1140: dhclient

NASLDB: RHSA-2012-1140: dhclient

General

ID: 61404
Name: RHSA-2012-1140: dhclient

Summary: Check for the version of the dhclient packages

Credits: Tenable Network Security, Inc.

Classification

Risk: –

CVSS: CVSS2#AV:A/AC:L/Au:N/C:N/I:N/A:C
CVSS Base Vector: –
CVSS Temporal Vector: –

Port: 0
Family: Red Hat Local Security Checks
Type: Local

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.