ISC DHCP up to 4.2.4 resource management

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in ISC DHCP up to 4.2.4. The impacted element is an unknown function. This manipulation causes resource management. This vulnerability is handled as CVE-2012-3954. Additionally, an exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in ISC DHCP up to 4.2.4 (Network Management Software) and classified as critical. Affected by this vulnerability is an unknown functionality. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. The summary by CVE is:

Multiple memory leaks in ISC DHCP 4.1.x and 4.2.x before 4.2.4-P1 and 4.1-ESV before 4.1-ESV-R6 allow remote attackers to cause a denial of service (memory consumption) by sending many requests.

The weakness was released 07/24/2012 by Glen Eustace with Massey University as CERT-FI Advisory on ISC DHCP as confirmed advisory (Website). The advisory is shared at cert.fi. The public release was coordinated with ISC. This vulnerability is known as CVE-2012-3954 since 07/11/2012. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available.

A public exploit has been developed in Python. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 69605 (Amazon Linux AMI : dhcp (ALAS-2012-115)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350632 (Amazon Linux Security Advisory for dhcp: ALAS-2012-115).

Upgrading to version 4.2.4-P1 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (77183), Tenable (69605), SecurityFocus (BID 54665†), OSVDB (84253†) and Secunia (SA50017†). Entries connected to this vulnerability are available at VDB-5880 and VDB-5882. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
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: 69605
Nessus Name: Amazon Linux AMI : dhcp (ALAS-2012-115)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 71493
OpenVAS Name: Debian Security Advisory DSA 2516-1 (isc-dhcp)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: DHCP 4.2.4-P1

Timelineinfo

07/11/2012 🔍
07/24/2012 +13 days 🔍
07/24/2012 +0 days 🔍
07/25/2012 +1 days 🔍
07/25/2012 +0 days 🔍
07/25/2012 +0 days 🔍
07/25/2012 +0 days 🔍
07/26/2012 +1 days 🔍
07/27/2012 +1 days 🔍
08/09/2012 +13 days 🔍
08/09/2012 +0 days 🔍
03/27/2021 +3152 days 🔍

Sourcesinfo

Vendor: isc.org

Advisory: CERT-FI Advisory on ISC DHCP
Researcher: Glen Eustace
Organization: Massey University
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-3954 (🔍)
GCVE (CVE): GCVE-0-2012-3954
GCVE (VulDB): GCVE-100-5881

OVAL: 🔍

X-Force: 77183
SecurityFocus: 54665 - ISC DHCP Multiple Denial of Service Vulnerabilities
Secunia: 50017 - Debian update for isc-dhcp, Less Critical
OSVDB: 84253
SecurityTracker: 1027300 - ISC DHCP Memory Leak Lets Remote Users Deny Service
Vulnerability Center: 35834 - ISC DHCP Multiple Memory Leaks Allow Remote DoS by Sending Multiple Requests, Medium

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

Entryinfo

Created: 08/09/2012 13:10
Updated: 03/27/2021 08:07
Changes: 08/09/2012 13:10 (80), 04/15/2017 16:24 (13), 03/27/2021 08:07 (3)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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