CVE-2022-26648 : Security Advisory and Response
Learn about CVE-2022-26648 affecting Siemens SCALANCE X series devices. Understand the impact, affected systems, and mitigation steps to secure your industrial network.
A vulnerability has been identified in SCALANCE X series devices manufactured by Siemens. The vulnerability affects various models and versions, potentially allowing an unauthenticated remote attacker to crash the affected devices by exploiting a flaw in how the devices handle incoming HTTP requests.
Understanding CVE-2022-26648
This section provides insights into the nature and impact of the CVE-2022-26648 vulnerability.
What is CVE-2022-26648?
The vulnerability in CVE-2022-26648 stems from a failure in properly validating the GET parameter XNo of incoming HTTP requests, which could be exploited by an unauthenticated remote attacker to crash the affected Siemens SCALANCE X series devices.
The Impact of CVE-2022-26648
The impact of this vulnerability is rated as HIGH with a CVSS base score of 8.2, indicating a significant threat to the security and integrity of the affected devices.
Technical Details of CVE-2022-26648
In this section, we delve into the technical aspects of the CVE-2022-26648 vulnerability.
Vulnerability Description
The vulnerability involves a failure to validate the GET parameter XNo of incoming HTTP requests, potentially leading to a denial-of-service condition on the affected devices.
Affected Systems and Versions
Various Siemens SCALANCE X series devices are impacted, including SCALANCE X200-4P IRT, SCALANCE X201-3P IRT, SCALANCE X204-2, SCALANCE XF204, and more, running versions lower than V5.5.2 or V5.2.6.
Exploitation Mechanism
To exploit this vulnerability, an unauthenticated remote attacker can manipulate the XNo parameter in incoming HTTP requests to trigger a crash on the affected devices.
Mitigation and Prevention
Understanding how to mitigate and prevent the exploitation of CVE-2022-26648 is crucial for maintaining the security of Siemens SCALANCE X series devices.
Immediate Steps to Take
Users are advised to apply security updates provided by Siemens to address the vulnerability and enhance the security posture of the affected devices.
Long-Term Security Practices
Implementing network segmentation, restricting access to vulnerable devices, and monitoring incoming traffic for suspicious activities are long-term security practices that can help mitigate potential risks.
Patching and Updates
Regularly checking for and applying security patches and firmware updates from Siemens is essential to stay protected against known vulnerabilities and security threats.