PT-2021-18138 · 3S Smart Software Solutions · Codesys Control Runtime System

Published 2021-05-03 · Updated 2021-09-14 · CVE-2021-29242

Positive Technologies (AI Summary)

CVSS v2.0

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: CODESYS Control Runtime system versions prior to 3.5.17.0

Description: The issue is related to improper input validation, allowing attackers to send crafted communication packets. This can lead to changes in the router's addressing scheme, enabling the re-routing, addition, removal, or modification of low-level communication packages.

Recommendations: For versions prior to 3.5.17.0, update to version 3.5.17.0 or later to resolve the issue.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2021-29242

Affected Products

Codesys Control Runtime System

References · 5

• https://customers.codesys.com/index.php · Vendor Advisory
• https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14640&token=623b6fceb0579ef0f7505e29beefa5b3f8ac7873&download= · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-29242 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-29242 · Security Note
• https://codesys.com/security/security-reports.html · Vendor Advisory