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Test ID:1.3.6.1.4.1.25623.1.0.870696
Category:Red Hat Local Security Checks
Title:RedHat Update for dhcp RHSA-2011:0256-01
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. DHCPv6 is the DHCP protocol version for IPv6 networks.

A flaw was found in the way the dhcpd daemon processed certain DHCPv6
messages for addresses that had previously been declined and marked as
abandoned internally. If a remote attacker sent such messages to dhcpd, it
could cause dhcpd to crash due to an assertion failure if it was running as
a DHCPv6 server. (CVE-2011-0413)

Red Hat would like to thank Internet Systems Consortium for reporting this
issue.

Users running dhcpd as a DHCPv6 server 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:
7.8

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

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2011-0413
BugTraq ID: 46035
http://www.securityfocus.com/bid/46035
CERT/CC vulnerability note: VU#686084
http://www.kb.cert.org/vuls/id/686084
Debian Security Information: DSA-2184 (Google Search)
http://www.debian.org/security/2011/dsa-2184
http://lists.fedoraproject.org/pipermail/package-announce/2011-February/053644.html
http://www.mandriva.com/security/advisories?name=MDVSA-2011:022
http://www.osvdb.org/70680
http://www.redhat.com/support/errata/RHSA-2011-0256.html
http://securitytracker.com/id?1024999
http://secunia.com/advisories/43006
http://secunia.com/advisories/43104
http://secunia.com/advisories/43167
http://secunia.com/advisories/43354
http://secunia.com/advisories/43613
http://www.vupen.com/english/advisories/2011/0235
http://www.vupen.com/english/advisories/2011/0266
http://www.vupen.com/english/advisories/2011/0300
http://www.vupen.com/english/advisories/2011/0400
http://www.vupen.com/english/advisories/2011/0583
XForce ISS Database: dhcp-dhcpv6-dos(64959)
https://exchange.xforce.ibmcloud.com/vulnerabilities/64959
CopyrightCopyright (c) 2012 Greenbone Networks GmbH

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