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Test ID:1.3.6.1.4.1.25623.1.0.870728
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.
Description:Summary:
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
address.

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)

Solution:
Please Install the Updated Packages.

CVSS Score:
5.0

CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2011-4539
BugTraq ID: 50971
http://www.securityfocus.com/bid/50971
Debian Security Information: DSA-2519 (Google Search)
http://www.debian.org/security/2012/dsa-2519
http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071549.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-December/070980.html
http://security.gentoo.org/glsa/glsa-201301-06.xml
http://www.mandriva.com/security/advisories?name=MDVSA-2011:182
http://www.securitytracker.com/id?1026393
http://secunia.com/advisories/47153
http://secunia.com/advisories/47178
SuSE Security Announcement: openSUSE-SU-2011:1318 (Google Search)
http://lists.opensuse.org/opensuse-updates/2011-12/msg00006.html
http://www.ubuntu.com/usn/USN-1309-1
XForce ISS Database: isc-dhcp-dhcpd-regex-dos(71680)
https://exchange.xforce.ibmcloud.com/vulnerabilities/71680
CopyrightCopyright (c) 2012 Greenbone Networks GmbH

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