Executive Summary

Title ISC DHCP server vulnerability
Name VU#159528 First vendor Publication 2010-12-13
Vendor VU-CERT Last vendor Modification 2010-12-13
Severity (Vendor) N/A Revision M

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:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
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Vulnerability Note VU#159528

ISC DHCP server vulnerability


The ISC DHCP server contains a vulnerability that could allow a remote attacker to cause a denial of service.

I. Description

According to ISC:

If a TCP connection is established to the server on a port which has been configured for communication with a failover peer, this can cause it to become non-responsive to all normal DHCP protocol traffic. The server will progress to a communications-interrupted state - but in addition will also cease to provide DHCP services to clients. The server must be restarted to resume normal operation.
This can be used as an attack vector against servers that are configured for failover partnerships.

II. Impact

An unauthenticated remote attacker could cause the server to become unresponsive to all normal DHCP protocol traffic, thereby creating a denial of service.

III. Solution

Apply an update

Users who obtain ISC DHCP from a third-party vendor, such as their operating system vendor, should see the vendor information portion of this document for a partial list of affected vendors.

This vulnerability is addressed in ISC DHCP version 4.2.0-P2. Users of ISC DHCP from the original source distribution should upgrade to this version or later, as appropriate.

See also https://www.isc.org/software/dhcp/advisories/cve-2010-3616

Vendor Information

VendorStatusDate NotifiedDate Updated
Internet Systems Consortium - DHCPAffected2010-12-13




Thanks to Internet Systems Consortium for reporting this vulnerability.

This document was written by Michael Orlando.

Other Information

Date Public:2010-12-13
Date First Published:2010-12-13
Date Last Updated:2010-12-13
CERT Advisory: 
US-CERT Technical Alerts: 
Severity Metric:11.81
Document Revision:9

Original Source

Url : http://www.kb.cert.org/vuls/id/159528

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-20 Improper Input Validation

CPE : Common Platform Enumeration

Application 2

OpenVAS Exploits

Date Description
2011-09-12 Name : Fedora Update for dhcp FEDORA-2011-10705
File : nvt/gb_fedora_2011_10705_dhcp_fc14.nasl
2011-04-19 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
2011-01-11 Name : Mandriva Update for dhcp MDVSA-2011:001 (dhcp)
File : nvt/gb_mandriva_MDVSA_2011_001.nasl
2010-12-28 Name : Fedora Update for dhcp FEDORA-2010-18856
File : nvt/gb_fedora_2010_18856_dhcp_fc14.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
69795 ISC DHCP Failover Peer Port TCP Connection Remote DoS

ISC DHCP contains a flaw that may allow a remote denial of service. The issue is triggered when an error occurs within the failover peer feature when handling certain TCP traffic traffic. This may be exploited via maliciously crafted packets to the failover peer port to cause a denial of service.

Nessus® Vulnerability Scanner

Date Description
2011-01-28 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2011-001.nasl - Type : ACT_GATHER_INFO
2010-12-20 Name : The remote Fedora host is missing a security update.
File : fedora_2010-18856.nasl - Type : ACT_GATHER_INFO