Executive Summary

Summary
Title Dhcp vulnerability
Informations
NameUSN-803-2First vendor Publication2010-01-27
VendorUbuntuLast vendor Modification2010-01-27
Severity (Vendor) N/ARevisionN/A

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score10Attack RangeNetwork
Cvss Impact Score10Attack ComplexityLow
Cvss Expoit Score10AuthenticationNone Required
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects the following Ubuntu releases:

Ubuntu 8.10 Ubuntu 9.04 Ubuntu 9.10

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 8.10:
dhcp3-client 3.1.1-1ubuntu2.2
dhcp3-client-udeb 3.1.1-1ubuntu2.2

Ubuntu 9.04:
dhcp-client 3.1.1-5ubuntu8.2
dhcp3-client 3.1.1-5ubuntu8.2

Ubuntu 9.10:
dhcp-client 3.1.2-1ubuntu7.1
dhcp3-client 3.1.2-1ubuntu7.1

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

Details follow:

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.

Original Source

Url : http://www.ubuntu.com/usn/USN-803-2

CWE : Common Weakness Enumeration

idName
CWE-119Failure to Constrain Operations within the Bounds of a Memory Buffer

OVAL Definitions

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:
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:
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:
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:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application5

ExploitDB Exploits

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

OpenVAS Exploits

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

Open Source Vulnerability Database (OSVDB)

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

Information Assurance Vulnerability Management (IAVM)

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

Snort® IPS/IDS

DateDescription
2014-01-10dhclient subnet mask option buffer overflow attempt
RuleID : 15700 - Revision : 2 - Type : EXPLOIT

Nessus® Vulnerability Scanner

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

Alert History

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0
1
DateInformations
2014-02-17 12:06:07
  • Multiple Updates
2013-05-11 00:56:05
  • Multiple Updates