Stack-based buffer overflow in Siemens products - CVE-2021-25667
Published: March 10, 2021
Vulnerability identifier: #VU51378
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-25667
CWE-ID: CWE-121
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: Siemens
Affected software:
RUGGEDCOM RM1224
SCALANCE SC-600
SCALANCE X300WG
SCALANCE XR-500
SCALANCE XM-400
SCALANCE Xx200
SCALANCE M-800 / S615
RUGGEDCOM RM1224
SCALANCE SC-600
SCALANCE X300WG
SCALANCE XR-500
SCALANCE XM-400
SCALANCE Xx200
SCALANCE M-800 / S615
Detailed vulnerability description
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.
How to mitigate CVE-2021-25667
Install updates from vendor's website.