PT-2021-20552 · Phoenix Contact · Plcnext

Oliver Carrigan · Published 2021-09-27 · Updated 2022-07-28 · CVE-2021-34570

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions: Phoenix Contact PLCnext control devices versions prior to 2021.0.5 LTS

Description: The issue allows for a Denial of Service (DoS) attack through specially crafted JSON requests.

Recommendations: For versions prior to 2021.0.5 LTS, update to version 2021.0.5 LTS or later to resolve the issue.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2021-34570

Affected Products

Plcnext

References · 5

• https://cert.vde.com/en/advisories/VDE-2021-029 · Patch
• https://osv.dev/vulnerability/CVE-2021-34570 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-34570 · Security Note
• https://t.me/cvenotify/29450 · Telegram Post
• https://t.me/cibsecurity/29428 · Telegram Post