Stack-based buffer overflow in Kepware products - CVE-2020-27265

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing OPC UA messages. A remote unauthenticated attacker can trick the victim into opening a specially crafted OPC UA message, trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Affected software

How to mitigate CVE-2020-27265

External References

• https://ics-cert.us-cert.gov/advisories/icsa-20-352-02

Related Security Bulletins

• Multiple vulnerabilities in PTC Kepware products