Stack-based buffer overflow in Siemens products - CVE-2021-25667

Vulnerability details

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

The vulnerability exists due to a boundary error within the handling of Spanning Tree Protocol (STP) Bridge Protocol Data Unit (BPDU) frames. A remote attacker on the local network can 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-2021-25667

External References

• https://ics-cert.us-cert.gov/advisories/icsa-21-068-03

Related Security Bulletins

• Remote code execution in Siemens SCALANCE and RUGGEDCOM Devices