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Test ID:
Category:Red Hat Local Security Checks
Title:RedHat Update for dhcp RHSA-2011:1819-01
Summary:The remote host is missing an update for the 'dhcp'; package(s) announced via the referenced advisory.
The remote host is missing an update for the 'dhcp'
package(s) announced via the referenced advisory.

Vulnerability Insight:
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

A denial of service flaw was found in the way the dhcpd daemon handled DHCP
request packets when regular expression matching was used in
'/etc/dhcp/dhcpd.conf'. A remote attacker could use this flaw to crash
dhcpd. (CVE-2011-4539)

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.

Affected Software/OS:
dhcp on Red Hat Enterprise Linux Desktop (v. 6),
Red Hat Enterprise Linux Server (v. 6),
Red Hat Enterprise Linux Workstation (v. 6)

Please Install the Updated Packages.

CVSS Score:

CVSS Vector:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2011-4539
BugTraq ID: 50971
Debian Security Information: DSA-2519 (Google Search)
SuSE Security Announcement: openSUSE-SU-2011:1318 (Google Search)
XForce ISS Database: isc-dhcp-dhcpd-regex-dos(71680)
CopyrightCopyright (c) 2012 Greenbone Networks GmbH

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