Phoenix Contact PLCnext prior 2021.0.5 LTS JSON Request denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Phoenix Contact PLCnext. This impacts an unknown function of the component JSON Request Handler. Such manipulation leads to denial of service. This vulnerability is listed as CVE-2021-34570. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Phoenix Contact PLCnext. Affected by this issue is an unknown part of the component JSON Request 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 integrity, and availability.

The weakness was presented 09/27/2021 as VDE-2021-029. The advisory is shared for download at cert.vde.com. This vulnerability is handled as CVE-2021-34570 since 06/10/2021. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 2021.0.5 LTS eliminates this vulnerability.

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

Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.6

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

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 9.1
CNA Vector (CERT@VDE): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PLCnext 2021.0.5 LTS

Timelineinfo

06/10/2021 🔍
09/27/2021 +109 days 🔍
09/27/2021 +0 days 🔍
10/02/2021 +5 days 🔍

Sourcesinfo

Advisory: VDE-2021-029
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-34570 (🔍)
GCVE (CVE): GCVE-0-2021-34570
GCVE (VulDB): GCVE-100-183368

Entryinfo

Created: 09/27/2021 13:32
Updated: 10/02/2021 14:18
Changes: 09/27/2021 13:32 (49), 10/02/2021 14:18 (19)
Complete: 🔍
Cache ID: 216::103

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