PT-2020-13151 · Phoenix Contact · Plcnext Control Devices

Daniel Hackel + 4 · Published 2020-12-17 · Updated 2020-12-21 · CVE-2020-12517

Positive Technologies (AI Summary)

CVSS v3.1

9.0

Critical

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Phoenix Contact PLCnext Control Devices versions prior to 2021.0 LTS

Description The issue allows an authenticated low-privileged user to embed malicious Javascript code, potentially gaining admin rights when an admin user visits the vulnerable website. This is a case of local privilege escalation.

Recommendations For versions prior to 2021.0 LTS, update to version 2021.0 LTS or later to resolve the issue. As a temporary workaround, consider restricting access to the vulnerable website to minimize the risk of exploitation.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2020-12517

Affected Products

Plcnext Control Devices

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2020-12517 · Security Note
• https://osv.dev/vulnerability/CVE-2020-12517 · Vendor Advisory
• https://t.me/cibsecurity/21032 · Telegram Post
• https://cert.vde.com/en-us/advisories/vde-2020-049 · Note