CVE-2021-21867: High severity codesys development system vulnerability

Published Aug 18, 2021

Updated

An unsafe deserialization vulnerability exists in the ObjectManager.plugin ObjectStream.ProfileByteArray functionality of CODESYS GmbH CODESYS Development System 3.5.16 and 3.5.17. A specially crafted file can lead to arbitrary command execution. An attacker can provide a malicious file to trigger this vulnerability.

Affected Software

2 affected components

CODESYS CODESYS=3.5.16.0

CODESYS CODESYS=3.5.17.0

Remediation

Patch Available

https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16805&token=ee583c498941d9fda86490bca98ff21928eec08a&download=

Event History

Aug 18, 2021

CVE Published

via MITRE·02:34 PM

Data Sourced

via MITRE·02:34 PM

DescriptionSeverityWeakness

Frequently Asked Questions

What is the severity of CVE-2021-21867?

CVE-2021-21867 has a severity rating that indicates a risk of arbitrary command execution due to unsafe deserialization.

How do I fix CVE-2021-21867?

To fix CVE-2021-21867, upgrade to the latest version of CODESYS Development System beyond 3.5.17.

What versions of CODESYS are affected by CVE-2021-21867?

CVE-2021-21867 affects CODESYS Development System versions 3.5.16.0 and 3.5.17.0.

What type of vulnerability is CVE-2021-21867?

CVE-2021-21867 is categorized as an unsafe deserialization vulnerability.

Can CVE-2021-21867 be exploited remotely?

Yes, an attacker can exploit CVE-2021-21867 by providing a specially crafted file to the affected system.