Executive Summary

Summary
Title dhcp security update
Informations
Name RHSA-2010:0923 First vendor Publication 2010-11-30
Vendor RedHat Last vendor Modification 2010-11-30
Severity (Vendor) Moderate Revision 01

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:N/I:N/A:P)
Cvss Base Score 4.3 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

Updated dhcp packages that fix one security issue are now available for Red Hat Enterprise Linux 6.

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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

3. 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. DHCPv6 is the DHCP protocol version for IPv6 networks.

A NULL pointer dereference flaw was discovered in the way the dhcpd daemon parsed DHCPv6 packets. A remote attacker could use this flaw to crash dhcpd via a specially-crafted DHCPv6 packet, if dhcpd was running as a DHCPv6 server. (CVE-2010-3611)

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.

4. Solution:

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at http://kbase.redhat.com/faq/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

649877 - CVE-2010-3611 dhcp: NULL pointer dereference crash via crafted DHCPv6 packet

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2010-0923.html

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:21757
 
Oval ID: oval:org.mitre.oval:def:21757
Title: RHSA-2010:0923: dhcp security update (Moderate)
Description: ISC DHCP server 4.0 before 4.0.2, 4.1 before 4.1.2, and 4.2 before 4.2.0-P1 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a DHCPv6 packet containing a Relay-Forward message without an address in the Relay-Forward link-address field.
Family: unix Class: patch
Reference(s): RHSA-2010:0923-01
CVE-2010-3611
Version: 4
Platform(s): Red Hat Enterprise Linux 6
Product(s): dhcp
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:23585
 
Oval ID: oval:org.mitre.oval:def:23585
Title: ELSA-2010:0923: dhcp security update (Moderate)
Description: ISC DHCP server 4.0 before 4.0.2, 4.1 before 4.1.2, and 4.2 before 4.2.0-P1 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a DHCPv6 packet containing a Relay-Forward message without an address in the Relay-Forward link-address field.
Family: unix Class: patch
Reference(s): ELSA-2010:0923-01
CVE-2010-3611
Version: 6
Platform(s): Oracle Linux 6
Product(s): dhcp
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:28029
 
Oval ID: oval:org.mitre.oval:def:28029
Title: DEPRECATED: ELSA-2010-0923 -- dhcp security update (moderate)
Description: [12:4.1.1-12.P1.1] - CVE-2010-3611: NULL pointer dereference crash via crafted DHCPv6 packet (#651913)
Family: unix Class: patch
Reference(s): ELSA-2010-0923
CVE-2010-3611
Version: 4
Platform(s): Oracle Linux 6
Product(s): dhcp
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 17

OpenVAS Exploits

Date Description
2011-09-12 Name : Fedora Update for dhcp FEDORA-2011-10705
File : nvt/gb_fedora_2011_10705_dhcp_fc14.nasl
2011-04-21 Name : Fedora Update for dhcp FEDORA-2011-0848
File : nvt/gb_fedora_2011_0848_dhcp_fc13.nasl
2011-04-19 Name : Fedora Update for dhcp FEDORA-2011-4897
File : nvt/gb_fedora_2011_4897_dhcp_fc14.nasl
2011-02-04 Name : Fedora Update for dhcp FEDORA-2011-0862
File : nvt/gb_fedora_2011_0862_dhcp_fc14.nasl
2011-01-24 Name : FreeBSD Ports: isc-dhcp41-server
File : nvt/freebsd_isc-dhcp41-server.nasl
2010-12-28 Name : Fedora Update for dhcp FEDORA-2010-18856
File : nvt/gb_fedora_2010_18856_dhcp_fc14.nasl
2010-12-02 Name : Fedora Update for dhcp FEDORA-2010-17312
File : nvt/gb_fedora_2010_17312_dhcp_fc14.nasl
2010-11-23 Name : Fedora Update for dhcp FEDORA-2010-17303
File : nvt/gb_fedora_2010_17303_dhcp_fc13.nasl
2010-11-16 Name : Mandriva Update for dhcp MDVSA-2010:226 (dhcp)
File : nvt/gb_mandriva_MDVSA_2010_226.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
68999 ISC DHCP Server DHCPv6 Packet Relay-Forward Message Remote DoS

ISC DHCP Server contains a flaw that may allow a remote denial of service. The issue is triggered when an error when processing DHCPv6 'Relay-Forward' messages occurs, which may be exploited via a packet with an empty 'Link-Address' field to cause a denial of service.

Nessus® Vulnerability Scanner

Date Description
2014-06-13 Name : The remote openSUSE host is missing a security update.
File : suse_11_3_dhcp-101108.nasl - Type : ACT_GATHER_INFO
2013-07-12 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2010-0923.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20101130_dhcp_on_SL6_x.nasl - Type : ACT_GATHER_INFO
2010-12-01 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2010-0923.nasl - Type : ACT_GATHER_INFO
2010-11-28 Name : The remote FreeBSD host is missing a security-related update.
File : freebsd_pkg_f154a3c7f7f411dfb61700e0815b8da8.nasl - Type : ACT_GATHER_INFO
2010-11-23 Name : The remote Fedora host is missing a security update.
File : fedora_2010-17303.nasl - Type : ACT_GATHER_INFO
2010-11-15 Name : The remote Fedora host is missing a security update.
File : fedora_2010-17312.nasl - Type : ACT_GATHER_INFO
2010-11-11 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2010-226.nasl - Type : ACT_GATHER_INFO

Alert History

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0
Date Informations
2014-02-17 11:54:07
  • Multiple Updates