CVE-2021-25673 : Security Advisory and Response
Discover details about CVE-2021-25673, a Denial-of-Service vulnerability affecting Siemens SIMATIC S7-PLCSIM V5.4. Learn about the impact, affected versions, and mitigation steps.
A Denial-of-Service vulnerability has been discovered in SIMATIC S7-PLCSIM V5.4 (All versions) by Siemens. This CVE allows an attacker with local access to cause the application to enter an infinite loop, rendering it unresponsive.
Understanding CVE-2021-25673
This section delves into the details of the CVE-2021-25673 vulnerability.
What is CVE-2021-25673?
The vulnerability identified in SIMATIC S7-PLCSIM V5.4 (All versions) allows an attacker with local system access to trigger a Denial-of-Service condition by opening a specially crafted file. This action can force the application into an infinite loop, leading to unresponsiveness and requiring a restart to restore functionality.
The Impact of CVE-2021-25673
The impact of CVE-2021-25673 is the potential for disruptiveness in the affected application, as it becomes unresponsive and requires manual intervention to resume normal operation.
Technical Details of CVE-2021-25673
Explore the technical specifics of the CVE-2021-25673 vulnerability in this section.
Vulnerability Description
The vulnerability in SIMATIC S7-PLCSIM V5.4 (All versions) results in a Denial-of-Service condition, triggered by opening a specifically crafted file, causing the application to enter an infinite loop.
Affected Systems and Versions
All versions of SIMATIC S7-PLCSIM V5.4 by Siemens are impacted by this vulnerability.
Exploitation Mechanism
The exploitation of CVE-2021-25673 involves a local attacker opening a malicious file, forcing the application into an infinite loop state.
Mitigation and Prevention
Discover the necessary steps to mitigate and prevent the CVE-2021-25673 vulnerability in this section.
Immediate Steps to Take
To address this vulnerability, users should ensure that systems running SIMATIC S7-PLCSIM V5.4 (All versions) are not exposed to untrusted or malicious files.
Long-Term Security Practices
Implementing robust security measures and regular security audits can help prevent similar Denial-of-Service vulnerabilities in the long run.
Patching and Updates
Siemens may release patches or updates to address this vulnerability. Users are advised to apply these fixes promptly to secure their systems.