CVE-2021-34570 : Multiple Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 L

Multiple Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 LTS are prone to a DoS attack through special crafted JSON requests.

Published 2021-09-27 09:15:08

Updated 2022-07-28 10:40:30

Source CERT VDE

View at NVD, CVE.org

Vulnerability category: Input validationDenial of service

Products affected by CVE-2021-34570

Phoenixcontact » Axc F 2152 Firmware » LTS Edition
Versions before (<) 2021.0.5
cpe:2.3:o:phoenixcontact:axc_f_2152_firmware:*:*:*:*:lts:*:*:*
Matching versions
When used together with: Phoenixcontact » Axc F 2152 » Version: N/A
Phoenixcontact » Axc F 2152 Starterkit Firmware » LTS Edition
Versions before (<) 2021.0.5
cpe:2.3:o:phoenixcontact:axc_f_2152_starterkit_firmware:*:*:*:*:lts:*:*:*
Matching versions
When used together with: Phoenixcontact » Axc F 2152 Starterkit » Version: N/A
Phoenixcontact » Plcnext Technology Starterkit Firmware » LTS Edition
Versions before (<) 2021.0.5
cpe:2.3:o:phoenixcontact:plcnext_technology_starterkit_firmware:*:*:*:*:lts:*:*:*
Matching versions
When used together with: Phoenixcontact » Plcnext Technology Starterkit » Version: N/A
Phoenixcontact » Rfc 4072s Firmware » LTS Edition
Versions before (<) 2021.0.5
cpe:2.3:o:phoenixcontact:rfc_4072s_firmware:*:*:*:*:lts:*:*:*
Matching versions
When used together with: Phoenixcontact » Rfc 4072s » Version: N/A
Phoenixcontact » Axc F 3152 Firmware » LTS Edition
Versions before (<) 2021.0.5
cpe:2.3:o:phoenixcontact:axc_f_3152_firmware:*:*:*:*:lts:*:*:*
Matching versions
When used together with: Phoenixcontact » Axc F 3152 » Version: N/A
Phoenixcontact » Axc F 1152 Firmware » LTS Edition
Versions before (<) 2021.0.5
cpe:2.3:o:phoenixcontact:axc_f_1152_firmware:*:*:*:*:lts:*:*:*
Matching versions
When used together with: Phoenixcontact » Axc F 1152 » Version: N/A

EPSS FAQ

0.45%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 61 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.8	HIGH	AV:N/AC:L/Au:N/C:N/I:N/A:C	10.0	6.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Complete
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	CERT VDE
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Assigned by: info@cert.vde.com (Primary)

https://cert.vde.com/en/advisories/VDE-2021-029/

VDE-2021-029 | CERT@VDE
Patch;Third Party Advisory

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