CVE-2021-25667 : Vulnerability Insights and Analysis
Discover the stack-based buffer overflow vulnerability in Siemens products like RUGGEDCOM RM1224, SCALANCE M-800, and more (CVE-2021-25667). Learn about the impact, technical details, and mitigation steps.
A vulnerability has been identified in various Siemens products including RUGGEDCOM RM1224, SCALANCE M-800, SCALANCE S615, SCALANCE SC-600 Family, and more. These products are affected by a stack-based buffer overflow vulnerability in the handling of STP BPDU frames. This vulnerability could potentially lead to a denial-of-service condition or allow remote code execution if exploited.
Understanding CVE-2021-25667
This section provides insights into the impact, technical details, and mitigation strategies related to CVE-2021-25667.
What is CVE-2021-25667?
CVE-2021-25667 is a vulnerability found in multiple Siemens products that could be exploited by a remote attacker to trigger a denial-of-service or potential remote code execution.
The Impact of CVE-2021-25667
The vulnerability could have severe consequences, allowing attackers to disrupt services or gain unauthorized access to affected devices.
Technical Details of CVE-2021-25667
Here are the technical specifics of the CVE-2021-25667 vulnerability:
Vulnerability Description
The vulnerability involves a stack-based buffer overflow in the handling of STP BPDU frames on the affected Siemens products.
Affected Systems and Versions
The affected products include RUGGEDCOM RM1224, SCALANCE M-800, SCALANCE S615, and others with specific versions mentioned.
Exploitation Mechanism
Successful exploitation of this vulnerability requires the passive listening feature of the device to be active.
Mitigation and Prevention
This section outlines steps to mitigate the risks posed by CVE-2021-25667.
Immediate Steps to Take
It is crucial to apply security patches provided by Siemens to address the vulnerability. Additionally, disabling unnecessary features or services that could expose the device is recommended.
Long-Term Security Practices
Regularly updating and monitoring the security posture of the affected devices, along with implementing network segmentation and access controls, can enhance overall security.
Patching and Updates
Stay informed about security alerts and updates from Siemens. Promptly apply patches and follow best practices to secure the vulnerable devices.