ISC DHCP up to 4.1.0 DHCP Server client/dhclient.c script_write_params memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.0$0-$5k0.00

Summaryinfo

A vulnerability was found in ISC DHCP 2.0/3.0/3.1/4.0/4.1.0 and classified as critical. Affected is the function script_write_params of the file client/dhclient.c of the component DHCP Server. Such manipulation leads to memory corruption. This vulnerability is traded as CVE-2009-0692. Furthermore, there is an exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in ISC DHCP 2.0/3.0/3.1/4.0/4.1.0 (Network Management Software). It has been rated as critical. Affected by this issue is the function script_write_params of the file client/dhclient.c of the component DHCP Server. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was shared 07/14/2009 with Mandriva as confirmed advisory (CERT.org). The advisory is shared for download at kb.cert.org. This vulnerability is handled as CVE-2009-0692 since 02/22/2009. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known.

A public exploit has been developed in ANSI C. The exploit is available at securityfocus.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 67891 (Oracle Linux 3 : dhcp (ELSA-2009-1154)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165649 (SUSE Enterprise Linux Security Update dhcp-client (SUSE-SA:2009:037)).

Upgrading to version 3.0 eliminates this vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 8352.

The vulnerability is also documented in the databases at Exploit-DB (10015), Tenable (67891), SecurityFocus (BID 35668†), OSVDB (55819†) and Secunia (SA35785†). The entries VDB-3810, VDB-43706, VDB-43674 and VDB-43673 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.0

VulDB Base Score: 10.0
VulDB Temp Score: 9.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 67891
Nessus Name: Oracle Linux 3 : dhcp (ELSA-2009-1154)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 64421
OpenVAS Name: Debian Security Advisory DSA 1833-1 (dhcp3)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: DHCP 3.0
TippingPoint: 🔍

Timelineinfo

02/22/2009 🔍
07/14/2009 +142 days 🔍
07/14/2009 +0 days 🔍
07/14/2009 +0 days 🔍
07/14/2009 +0 days 🔍
07/14/2009 +0 days 🔍
07/14/2009 +0 days 🔍
07/14/2009 +0 days 🔍
07/19/2009 +4 days 🔍
07/12/2013 +1454 days 🔍
03/17/2015 +613 days 🔍
12/14/2024 +3560 days 🔍

Sourcesinfo

Vendor: isc.org

Advisory: kb.cert.org
Organization: Mandriva
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2009-0692 (🔍)
GCVE (CVE): GCVE-0-2009-0692
GCVE (VulDB): GCVE-100-49004

OVAL: 🔍
IAVM: 🔍

CERT: 🔍
SecurityFocus: 35668 - ISC DHCP 'dhclient' 'script_write_params()' Stack Buffer Overflow Vulnerability
Secunia: 35785 - ISC DHCP "script_write_params()" Buffer Overflow Vulnerability, Moderately Critical
OSVDB: 55819 - ISC DHCP client/dhclient.c script_write_params() Function Remote Overflow
SecurityTracker: 1022548 - DHCP dhclient Stack Overflow in script_write_params() Lets Remote Users Execute Arbitrary Code
Vulnerability Center: 22908 - ISC DHCP Crafted Subnet-Mask Option Remote Arbitrary Code Execution Vulnerability, High
Vupen: ADV-2009-1891

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/17/2015 23:38
Updated: 12/14/2024 20:27
Changes: 03/17/2015 23:38 (78), 08/20/2017 22:02 (22), 08/12/2021 11:37 (2), 12/05/2024 06:10 (14), 12/14/2024 20:27 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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