ISC DHCP up to 4.1-ESV-R16-P1/4.4.3 fqdn Label resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in ISC DHCP up to 4.1-ESV-R16-P1/4.4.3 and classified as problematic. This affects an unknown part of the component fqdn Label Handler. Executing a manipulation can lead to resource consumption. This vulnerability is handled as CVE-2022-2929. The attack can only be done within the local network. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in ISC DHCP up to 4.1-ESV-R16-P1/4.4.3 (Network Management Software). It has been declared as problematic. This vulnerability affects an unknown code of the component fqdn Label Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. CVE summarizes:

In ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1 a system with access to a DHCP server, sending DHCP packets crafted to include fqdn labels longer than 63 bytes, could eventually cause the server to run out of memory.

The weakness was released 10/07/2022. The advisory is shared for download at kb.isc.org. This vulnerability was named CVE-2022-2929 since 08/22/2022. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 211355 (Fedora 37 : dhcp (2022-9ca9a94e28)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.1-ESV-R16-P2 or 4.4.3-P1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (211355). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (Internet Systems Consortium (ISC)): 🔍

CVSSv2info

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

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 211355
Nessus Name: Fedora 37 : dhcp (2022-9ca9a94e28)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: DHCP 4.1-ESV-R16-P2/4.4.3-P1

Timelineinfo

08/22/2022 🔍
10/07/2022 +46 days 🔍
10/07/2022 +0 days 🔍
11/15/2024 +770 days 🔍

Sourcesinfo

Vendor: isc.org

Advisory: kb.isc.org
Status: Confirmed

CVE: CVE-2022-2929 (🔍)
GCVE (CVE): GCVE-0-2022-2929
GCVE (VulDB): GCVE-100-210256

Entryinfo

Created: 10/07/2022 13:44
Updated: 11/15/2024 10:56
Changes: 10/07/2022 13:44 (51), 11/15/2024 10:56 (16)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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