ISC DHCP 4.1-esv/4.1.0/4.1.1/4.1.2 IPv6 Lease Expiration Time denial of service

CVSS Meta Temp Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in ISC DHCP 4.1-esv/4.1.0/4.1.1/4.1.2. This issue affects some unknown processing of the component IPv6 Lease Expiration Time Handler. Such manipulation leads to denial of service. This vulnerability is documented as CVE-2012-3955. The attack requires being on the local network. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in ISC DHCP 4.1-esv/4.1.0/4.1.1/4.1.2 (Network Management Software) and classified as critical. Affected by this issue is an unknown part of the component IPv6 Lease Expiration Time Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. CVE summarizes:

ISC DHCP 4.1.x before 4.1-ESV-R7 and 4.2.x before 4.2.4-P2 allows remote attackers to cause a denial of service (daemon crash) in opportunistic circumstances by establishing an IPv6 lease in an environment where the lease expiration time is later reduced.

The weakness was released 09/12/2012 by Glen Eustace with Massey University as AA-00779 as confirmed advisory (Website). The advisory is shared for download at kb.isc.org. The public release was coordinated with the vendor. This vulnerability is handled as CVE-2012-3955 since 07/11/2012. The attack needs to be done within the local network. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 74765 (openSUSE Security Update : dhcp (openSUSE-SU-2012:1252-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 121140 (Solaris 11.1 Support Repository Update (SRU) 1.4 Missing).

Upgrading to version 4.1-ESV-R7 or 4.2.4-P2 eliminates this vulnerability. The upgrade is hosted for download at isc.org.Addressing this vulnerability is possible by firewalling udp/53 (dns). The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (78480), Tenable (74765), SecurityFocus (BID 55530†), OSVDB (85424†) and Secunia (SA50612†). Entry connected to this vulnerability is available at VDB-9651. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 74765
Nessus Name: openSUSE Security Update : dhcp (openSUSE-SU-2012:1252-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 72416
OpenVAS Name: Debian Security Advisory DSA 2551-1 (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 4.1-ESV-R7/4.2.4-P2
Firewalling: 🔍
ISS Proventia IPS: 🔍

Timelineinfo

07/11/2012 🔍
09/12/2012 +63 days 🔍
09/12/2012 +0 days 🔍
09/12/2012 +0 days 🔍
09/12/2012 +0 days 🔍
09/13/2012 +1 days 🔍
09/13/2012 +0 days 🔍
09/13/2012 +0 days 🔍
09/14/2012 +1 days 🔍
09/17/2012 +3 days 🔍
09/23/2012 +6 days 🔍
06/13/2014 +628 days 🔍
04/13/2021 +2496 days 🔍

Sourcesinfo

Vendor: isc.org

Advisory: AA-00779
Researcher: Glen Eustace
Organization: Massey University
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-3955 (🔍)
GCVE (CVE): GCVE-0-2012-3955
GCVE (VulDB): GCVE-100-6296

OVAL: 🔍
IAVM: 🔍

X-Force: 78480
SecurityFocus: 55530 - ISC DHCP IPv6 Lease Expiration Handling Denial of Service Vulnerability
Secunia: 50612 - ISC DHCP IPv6 Lease Expiration Handling Denial of Service Security Issue, Less Critical
OSVDB: 85424
SecurityTracker: 1027528 - ISC DHCP IPv6 Lease Expiration Bug Lets Remote Users Deny Service
Vulnerability Center: 36194 - ISC DHCP 4.1.x and 4.2.x Remote DoS Vulnerability via IPv6 Lease Expiration Time, High

See also: 🔍

Entryinfo

Created: 09/17/2012 17:05
Updated: 04/13/2021 07:20
Changes: 09/17/2012 17:05 (84), 04/19/2017 10:30 (15), 04/13/2021 07:20 (2)
Complete: 🔍
Cache ID: 216:121:103

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