10 - USN-803-1

Executive Summary

Summary
Title	dhcp vulnerability

Informations
Name	USN-803-1	First vendor Publication	2009-07-14
Vendor	Ubuntu	Last vendor Modification	2009-07-14
Severity (Vendor)	N/A	Revision	N/A

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:C/I:C/A:C)
Cvss Base Score	10	Attack Range	Network
Cvss Impact Score	10	Attack Complexity	Low
Cvss Expoit Score	10	Authentication	None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects the following Ubuntu releases:

Ubuntu 6.06 LTS Ubuntu 8.04 LTS Ubuntu 8.10 Ubuntu 9.04

This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu.

The problem can be corrected by upgrading your system to the following package versions:

Ubuntu 6.06 LTS:
dhcp3-client 3.0.3-6ubuntu7.1
dhcp3-client-udeb 3.0.3-6ubuntu7.1

Ubuntu 8.04 LTS:
dhcp3-client 3.0.6.dfsg-1ubuntu9.1
dhcp3-client-udeb 3.0.6.dfsg-1ubuntu9.1

Ubuntu 8.10:
dhcp3-client 3.1.1-1ubuntu2.1
dhcp3-client-udeb 3.1.1-1ubuntu2.1

Ubuntu 9.04:
dhcp3-client 3.1.1-5ubuntu8.1
dhcp3-client-udeb 3.1.1-5ubuntu8.1

After a standard system upgrade you need to restart any DHCP network connections utilizing dhclient3 to effect the necessary changes.

Details follow:

It was discovered that the DHCP client as included in dhcp3 did not verify the length of certain option fields when processing a response from an IPv4 dhcp server. If a user running Ubuntu 6.06 LTS or 8.04 LTS connected to a malicious dhcp server, a remote attacker could cause a denial of service or execute arbitrary code as the user invoking the program, typically the 'dhcp' user. For users running Ubuntu 8.10 or 9.04, a remote attacker should only be able to cause a denial of service in the DHCP client. In Ubuntu 9.04, attackers would also be isolated by the AppArmor dhclient3 profile.

Original Source

Url : http://www.ubuntu.com/usn/USN-803-1

CWE : Common Weakness Enumeration

%	Id	Name
100 %	CWE-119	Failure to Constrain Operations within the Bounds of a Memory Buffer

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:10758

Oval ID:	oval:org.mitre.oval:def:10758
Title:	Stack-based buffer overflow in the script_write_params method in client/dhclient.c in ISC DHCP dhclient 4.1 before 4.1.0p1, 4.0 before 4.0.1p1, 3.1 before 3.1.2p1, 3.0, and 2.0 allows remote DHCP servers to execute arbitrary code via a crafted subnet-mask option.
Description:	Stack-based buffer overflow in the script_write_params method in client/dhclient.c in ISC DHCP dhclient 4.1 before 4.1.0p1, 4.0 before 4.0.1p1, 3.1 before 3.1.2p1, 3.0, and 2.0 allows remote DHCP servers to execute arbitrary code via a crafted subnet-mask option.
Family:	unix	Class:	vulnerability
Reference(s):	CVE-2009-0692	Version:	5
Platform(s):	Red Hat Enterprise Linux 3 CentOS Linux 3 Red Hat Enterprise Linux 4 CentOS Linux 4 Oracle Linux 4	Product(s):
Definition Synopsis:
OS Section: RHEL3, CentOS3 RHEL3 or CentOS3 The operating system installed on the system is Red Hat Enterprise Linux 3 AND CentOS Linux 3.x AND Configuration section dhclient is earlier than 7:3.0.1-10.2_EL3 AND dhcp is earlier than 7:3.0.1-10.2_EL3 AND dhcp-devel is earlier than 7:3.0.1-10.2_EL3 OR OS Section: RHEL4, CentOS4, Oracle Linux 4 RHEL4, CentOS4 or Oracle Linux 4 The operating system installed on the system is Red Hat Enterprise Linux 4 AND CentOS Linux 4.x AND Oracle Linux 4.x AND Configuration section dhclient is earlier than 7:3.0.1-65.el4_8.1 AND dhcp is earlier than 7:3.0.1-65.el4_8.1 AND dhcp-devel is earlier than 7:3.0.1-65.el4_8.1

Definition Id: oval:org.mitre.oval:def:12418

Oval ID:	oval:org.mitre.oval:def:12418
Title:	USN-803-2 -- dhcp3 vulnerability
Description:	USN-803-1 fixed a vulnerability in Dhcp. Due to an error, the patch to fix the vulnerability was not properly applied on Ubuntu 8.10 and higher. Even with the patch improperly applied, the default compiler options reduced the vulnerability to a denial of service. Additionally, in Ubuntu 9.04 and higher, users were also protected by the AppArmor dhclient3 profile. This update fixes the problem. Original advisory details: It was discovered that the DHCP client as included in dhcp3 did not verify the length of certain option fields when processing a response from an IPv4 dhcp server. If a user running Ubuntu 6.06 LTS or 8.04 LTS connected to a malicious dhcp server, a remote attacker could cause a denial of service or execute arbitrary code as the user invoking the program, typically the "dhcp" user. For users running Ubuntu 8.10 or 9.04, a remote attacker should only be able to cause a denial of service in the DHCP client. In Ubuntu 9.04, attackers would also be isolated by the AppArmor dhclient3 profile.
Family:	unix	Class:	patch
Reference(s):	USN-803-2 CVE-2009-0692	Version:	5
Platform(s):	Ubuntu 8.10 Ubuntu 9.10 Ubuntu 9.04	Product(s):	dhcp3
Definition Synopsis:
Release section Ubuntu 8.10 is installed AND Supported architectures section Installed architecture is sparc AND Installed architecture is i386 AND Installed architecture is amd64 AND Installed architecture is lpia AND Installed architecture is powerpc AND Packages section dhcp3-client DPKG is earlier than 3.1.1-1ubuntu2.2 AND dhcp3-dev DPKG is earlier than 3.1.1-1ubuntu2.2 AND dhcp3-relay DPKG is earlier than 3.1.1-1ubuntu2.2 AND dhcp3-common DPKG is earlier than 3.1.1-1ubuntu2.2 AND dhcp3-server-ldap DPKG is earlier than 3.1.1-1ubuntu2.2 AND dhcp3-server DPKG is earlier than 3.1.1-1ubuntu2.2 AND dhcp3-client-udeb DPKG is earlier than 3.1.1-1ubuntu2.2 OR Release section Ubuntu 9.10 is installed AND Architecture section Architecture independet section Installed architecture is all AND dhcp-client DPKG is earlier than 3.1.2-1ubuntu7.1 OR Architecture depended section Supported architectures section Installed architecture is amd64 AND Installed architecture is i386 AND Installed architecture is powerpc AND Installed architecture is sparc AND Installed architecture is lpia AND Packages section dhcp3-client DPKG is earlier than 3.1.2-1ubuntu7.1 AND dhcp3-dev DPKG is earlier than 3.1.2-1ubuntu7.1 AND dhcp3-relay DPKG is earlier than 3.1.2-1ubuntu7.1 AND dhcp3-common DPKG is earlier than 3.1.2-1ubuntu7.1 AND dhcp3-server-ldap DPKG is earlier than 3.1.2-1ubuntu7.1 AND dhcp3-server DPKG is earlier than 3.1.2-1ubuntu7.1 AND dhcp3-client-udeb DPKG is earlier than 3.1.2-1ubuntu7.1 OR Release section Ubuntu 9.04 is installed AND Architecture section Architecture independet section Installed architecture is all AND dhcp-client DPKG is earlier than 3.1.1-5ubuntu8.2 OR Architecture depended section Supported architectures section Installed architecture is amd64 AND Installed architecture is i386 AND Installed architecture is powerpc AND Installed architecture is sparc AND Installed architecture is lpia AND Packages section dhcp3-client DPKG is earlier than 3.1.1-5ubuntu8.2 AND dhcp3-dev DPKG is earlier than 3.1.1-5ubuntu8.2 AND dhcp3-relay DPKG is earlier than 3.1.1-5ubuntu8.2 AND dhcp3-common DPKG is earlier than 3.1.1-5ubuntu8.2 AND dhcp3-server-ldap DPKG is earlier than 3.1.1-5ubuntu8.2 AND dhcp3-server DPKG is earlier than 3.1.1-5ubuntu8.2 AND dhcp3-client-udeb DPKG is earlier than 3.1.1-5ubuntu8.2

Definition Id: oval:org.mitre.oval:def:13332

Oval ID:	oval:org.mitre.oval:def:13332
Title:	USN-803-1 -- dhcp3 vulnerability
Description:	It was discovered that the DHCP client as included in dhcp3 did not verify the length of certain option fields when processing a response from an IPv4 dhcp server. If a user running Ubuntu 6.06 LTS or 8.04 LTS connected to a malicious dhcp server, a remote attacker could cause a denial of service or execute arbitrary code as the user invoking the program, typically the "dhcp" user. For users running Ubuntu 8.10 or 9.04, a remote attacker should only be able to cause a denial of service in the DHCP client. In Ubuntu 9.04, attackers would also be isolated by the AppArmor dhclient3 profile.
Family:	unix	Class:	patch
Reference(s):	USN-803-1 CVE-2009-0692	Version:	5
Platform(s):	Ubuntu 8.04 Ubuntu 9.04 Ubuntu 6.06 Ubuntu 8.10	Product(s):	dhcp3
Definition Synopsis:
Release section Ubuntu 8.04 is installed AND Supported architectures section Installed architecture is sparc AND Installed architecture is i386 AND Installed architecture is amd64 AND Installed architecture is lpia AND Installed architecture is powerpc AND Packages section dhcp3-client DPKG is earlier than 3.0.6.dfsg-1ubuntu9.1 AND dhcp3-dev DPKG is earlier than 3.0.6.dfsg-1ubuntu9.1 AND dhcp3-relay DPKG is earlier than 3.0.6.dfsg-1ubuntu9.1 AND dhcp3-common DPKG is earlier than 3.0.6.dfsg-1ubuntu9.1 AND dhcp3-server DPKG is earlier than 3.0.6.dfsg-1ubuntu9.1 AND dhcp3-client-udeb DPKG is earlier than 3.0.6.dfsg-1ubuntu9.1 OR Release section Ubuntu 9.04 is installed AND Architecture section Architecture independent section Installed architecture is all AND dhcp-client DPKG is earlier than 3.1.1-5ubuntu8.1 OR Architecture depended section Supported architectures section Installed architecture is amd64 AND Installed architecture is i386 AND Installed architecture is powerpc AND Installed architecture is sparc AND Installed architecture is lpia AND Packages section dhcp3-client DPKG is earlier than 3.1.1-5ubuntu8.1 AND dhcp3-dev DPKG is earlier than 3.1.1-5ubuntu8.1 AND dhcp3-relay DPKG is earlier than 3.1.1-5ubuntu8.1 AND dhcp3-common DPKG is earlier than 3.1.1-5ubuntu8.1 AND dhcp3-server-ldap DPKG is earlier than 3.1.1-5ubuntu8.1 AND dhcp3-server DPKG is earlier than 3.1.1-5ubuntu8.1 AND dhcp3-client-udeb DPKG is earlier than 3.1.1-5ubuntu8.1 OR Release section Ubuntu 6.06 is installed AND Supported architectures section Installed architecture is sparc AND Installed architecture is i386 AND Installed architecture is amd64 AND Installed architecture is powerpc AND Packages section dhcp3-client DPKG is earlier than 3.0.3-6ubuntu7.1 AND dhcp3-dev DPKG is earlier than 3.0.3-6ubuntu7.1 AND dhcp3-relay DPKG is earlier than 3.0.3-6ubuntu7.1 AND dhcp3-common DPKG is earlier than 3.0.3-6ubuntu7.1 AND dhcp3-server DPKG is earlier than 3.0.3-6ubuntu7.1 AND dhcp3-client-udeb DPKG is earlier than 3.0.3-6ubuntu7.1 OR Release section Ubuntu 8.10 is installed AND Supported architectures section Installed architecture is sparc AND Installed architecture is i386 AND Installed architecture is amd64 AND Installed architecture is lpia AND Installed architecture is powerpc AND Packages section dhcp3-client DPKG is earlier than 3.1.1-1ubuntu2.1 AND dhcp3-dev DPKG is earlier than 3.1.1-1ubuntu2.1 AND dhcp3-relay DPKG is earlier than 3.1.1-1ubuntu2.1 AND dhcp3-common DPKG is earlier than 3.1.1-1ubuntu2.1 AND dhcp3-server-ldap DPKG is earlier than 3.1.1-1ubuntu2.1 AND dhcp3-server DPKG is earlier than 3.1.1-1ubuntu2.1 AND dhcp3-client-udeb DPKG is earlier than 3.1.1-1ubuntu2.1

Definition Id: oval:org.mitre.oval:def:5941

Oval ID:	oval:org.mitre.oval:def:5941
Title:	DHCP dhclient Stack Overflow in script_write_params() Lets Remote Users Execute Arbitrary Code
Description:	Stack-based buffer overflow in the script_write_params method in client/dhclient.c in ISC DHCP dhclient 4.1 before 4.1.0p1, 4.0 before 4.0.1p1, 3.1 before 3.1.2p1, 3.0, and 2.0 allows remote DHCP servers to execute arbitrary code via a crafted subnet-mask option.
Family:	unix	Class:	vulnerability
Reference(s):	CVE-2009-0692	Version:	1
Platform(s):	VMWare ESX Server 3 VMWare ESX Server 3.5	Product(s):
Definition Synopsis:
IF VMWare ESX Server 3.0.3 is installed AND Patch ESX303-200910402-SG is not installed OR VMware ESX Server 3.5.0 is installed AND All patches must be installed to not be vulnerable Patch ESX350-200910406-SG is not installed AND Patch ESX350-200910401-SG is not installed

CPE : Common Platform Enumeration

Type	Description	Count
Application	Isc Dhcp cpe:2.3:a:isc:dhcp:4.1.0:-:::::: cpe:2.3:a:isc:dhcp:4.0:::::::* cpe:2.3:a:isc:dhcp:3.1:::::::* cpe:2.3:a:isc:dhcp:3.0:::::::* cpe:2.3:a:isc:dhcp:2.0:::::::*	5

ExploitDB Exploits

id	Description
2009-11-10	ISC DHCP 'dhclient' 'script_write_params()' Stack Buffer Overflow Vulnerability
2009-07-27	ISC DHCP dhclient < 3.1.2p1 Remote Buffer Overflow PoC

OpenVAS Exploits

Date	Description
2011-08-09	Name : CentOS Update for dhclient CESA-2009:1154 centos3 i386 File : nvt/gb_CESA-2009_1154_dhclient_centos3_i386.nasl
2010-06-25	Name : Fedora Update for dhcp FEDORA-2010-10083 File : nvt/gb_fedora_2010_10083_dhcp_fc11.nasl
2010-01-29	Name : Ubuntu Update for dhcp3 vulnerability USN-803-2 File : nvt/gb_ubuntu_USN_803_2.nasl
2009-12-10	Name : Mandriva Security Advisory MDVSA-2009:312 (dhcp) File : nvt/mdksa_2009_312.nasl
2009-11-17	Name : Fedora Core 11 FEDORA-2009-9075 (dhcp) File : nvt/fcore_2009_9075.nasl
2009-10-13	Name : SLES10: Security update for dhclient File : nvt/sles10_dhcp.nasl
2009-10-11	Name : SLES11: Security update for dhcp-client File : nvt/sles11_dhcp-client.nasl
2009-10-10	Name : SLES9: Security update for dhcp-client File : nvt/sles9p5053652.nasl
2009-09-02	Name : Debian Security Advisory DSA 1833-2 (dhcp3) File : nvt/deb_1833_2.nasl
2009-09-02	Name : Fedora Core 10 FEDORA-2009-8344 (dhcp) File : nvt/fcore_2009_8344.nasl
2009-07-29	Name : Ubuntu USN-803-1 (dhcp3) File : nvt/ubuntu_803_1.nasl
2009-07-29	Name : RedHat Security Advisory RHSA-2009:1136 File : nvt/RHSA_2009_1136.nasl
2009-07-29	Name : SuSE Security Advisory SUSE-SA:2009:037 (dhcp-client) File : nvt/suse_sa_2009_037.nasl
2009-07-29	Name : CentOS Security Advisory CESA-2009:1154 (dhcp) File : nvt/ovcesa2009_1154.nasl
2009-07-29	Name : Mandrake Security Advisory MDVSA-2009:151 (dhcp) File : nvt/mdksa_2009_151.nasl
2009-07-29	Name : Gentoo Security Advisory GLSA 200907-12 (dhcp) File : nvt/glsa_200907_12.nasl
2009-07-29	Name : FreeBSD Ports: isc-dhcp31-client File : nvt/freebsd_isc-dhcp31-client.nasl
2009-07-29	Name : Debian Security Advisory DSA 1833-1 (dhcp3) File : nvt/deb_1833_1.nasl
2009-07-29	Name : RedHat Security Advisory RHSA-2009:1154 File : nvt/RHSA_2009_1154.nasl
2009-07-23	Name : ISC DHCP Client Buffer Overflow Vulnerability File : nvt/secpod_isc_dhcp_client_bof_vuln.nasl
0000-00-00	Name : Slackware Advisory SSA:2009-195-01 dhcp File : nvt/esoft_slk_ssa_2009_195_01.nasl

Open Source Vulnerability Database (OSVDB)

Id	Description
55819	ISC DHCP client/dhclient.c script_write_params() Function Remote Overflow

Information Assurance Vulnerability Management (IAVM)

Date	Description
2009-10-22	IAVM : 2009-A-0105 - Multiple Vulnerabilities in VMware Products Severity : Category I - VMSKEY : V0021867

Snort® IPS/IDS

Date	Description
2014-01-10	Multiple Operating Systems invalid DHCP option attempt RuleID : 7196 - Revision : 13 - Type : OS-OTHER
2014-01-10	dhclient subnet mask option buffer overflow attempt RuleID : 15700 - Revision : 3 - Type : SERVER-OTHER

Nessus® Vulnerability Scanner

Date	Description
2016-03-03	Name : The remote host is missing a security-related patch. File : vmware_VMSA-2009-0014_remote.nasl - Type : ACT_GATHER_INFO
2013-07-12	Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2009-1154.nasl - Type : ACT_GATHER_INFO
2013-07-12	Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2009-1136.nasl - Type : ACT_GATHER_INFO
2012-08-01	Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20090714_dhcp_on_SL3_x.nasl - Type : ACT_GATHER_INFO
2010-02-24	Name : The remote Debian host is missing a security-related update. File : debian_DSA-1833.nasl - Type : ACT_GATHER_INFO
2010-01-28	Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-803-2.nasl - Type : ACT_GATHER_INFO
2009-12-04	Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2009-312.nasl - Type : ACT_GATHER_INFO
2009-11-11	Name : The remote Fedora host is missing a security update. File : fedora_2009-9075.nasl - Type : ACT_GATHER_INFO
2009-10-19	Name : The remote VMware ESX host is missing one or more security-related patches. File : vmware_VMSA-2009-0014.nasl - Type : ACT_GATHER_INFO
2009-10-06	Name : The remote openSUSE host is missing a security update. File : suse_dhcp-6336.nasl - Type : ACT_GATHER_INFO
2009-09-24	Name : The remote SuSE 10 host is missing a security-related patch. File : suse_dhcp-6335.nasl - Type : ACT_GATHER_INFO
2009-09-24	Name : The remote SuSE 11 host is missing a security update. File : suse_11_dhcp-client-090626.nasl - Type : ACT_GATHER_INFO
2009-09-24	Name : The remote SuSE 9 host is missing a security-related patch. File : suse9_12447.nasl - Type : ACT_GATHER_INFO
2009-08-26	Name : The remote Fedora host is missing a security update. File : fedora_2009-8344.nasl - Type : ACT_GATHER_INFO
2009-07-21	Name : The remote openSUSE host is missing a security update. File : suse_11_0_dhcp-090626.nasl - Type : ACT_GATHER_INFO
2009-07-21	Name : The remote openSUSE host is missing a security update. File : suse_11_1_dhcp-090626.nasl - Type : ACT_GATHER_INFO
2009-07-16	Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2009-1154.nasl - Type : ACT_GATHER_INFO
2009-07-16	Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2009-151.nasl - Type : ACT_GATHER_INFO
2009-07-16	Name : The remote FreeBSD host is missing one or more security-related updates. File : freebsd_pkg_c444c8b7716911de9ab7000c29a67389.nasl - Type : ACT_GATHER_INFO
2009-07-15	Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2009-1154.nasl - Type : ACT_GATHER_INFO
2009-07-15	Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2009-1136.nasl - Type : ACT_GATHER_INFO
2009-07-15	Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-803-1.nasl - Type : ACT_GATHER_INFO
2009-07-15	Name : The remote Gentoo host is missing one or more security-related patches. File : gentoo_GLSA-200907-12.nasl - Type : ACT_GATHER_INFO
2009-07-15	Name : The remote Slackware host is missing a security update. File : Slackware_SSA_2009-195-01.nasl - Type : ACT_GATHER_INFO

Alert History

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Date	Informations
2014-02-17 12:06:07	Multiple Updates

Global Informations

Type	Count
CWE ID(s)	1
Oval ID(s)	4
CPE ID(s)	5
osvdb(s)	1
ExploitDB Exploit(s)	2
Openvas Exploit(s)	21
IAVM(s)	1
Snort® Rule(s)	2
Nessus® Exploit(s)	24

	Related
10	CVE-2009-0692
10	USN-803-2
Info : listing not affected by your CVSS Env Score

Same Subject	Severity
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