CVE-2021-25674 : Exploit Details and Defense Strategies
Learn about CVE-2021-25674 affecting SIMATIC S7-PLCSIM V5.4. Understand the impact, affected versions, and mitigation steps to address this vulnerability.
A vulnerability has been identified in SIMATIC S7-PLCSIM V5.4 that could allow an attacker with local access to the system to cause a Denial-of-Service condition by opening a specially crafted file. This could lead to a NULL pointer dereference condition, resulting in the application terminating unexpectedly.
Understanding CVE-2021-25674
This section provides insights into the nature and impact of the CVE-2021-25674 vulnerability.
What is CVE-2021-25674?
The CVE-2021-25674 vulnerability exists in SIMATIC S7-PLCSIM V5.4, affecting all versions of the product. It allows a local attacker to trigger a Denial-of-Service scenario by manipulating a specific file, leading to a NULL pointer deference condition and application failure.
The Impact of CVE-2021-25674
Exploitation of this vulnerability could result in the abrupt termination of the affected application, necessitating a restart to resume normal service.
Technical Details of CVE-2021-25674
Delve into the specifics of the CVE-2021-25674 vulnerability to better understand its implications.
Vulnerability Description
The vulnerability stems from an issue in SIMATIC S7-PLCSIM V5.4, enabling a local attacker to induce a Denial-of-Service state through the manipulation of a crafted file, ultimately leading to a NULL pointer dereference condition and application crash.
Affected Systems and Versions
All versions of SIMATIC S7-PLCSIM V5.4 are susceptible to this vulnerability, potentially impacting systems utilizing this software.
Exploitation Mechanism
By crafting a malicious file and leveraging local access to the target system, threat actors can trigger the vulnerability, causing the application to terminate unexpectedly.
Mitigation and Prevention
Explore the strategies and recommendations to mitigate the risks associated with CVE-2021-25674.
Immediate Steps to Take
Prompt actions are necessary to address the CVE-2021-25674 risk, including securing the affected system and monitoring for any signs of exploitation.
Long-Term Security Practices
Implementing robust security measures and access controls can help prevent unauthorized access and reduce the likelihood of successful attacks.
Patching and Updates
Stay updated with security patches and software updates provided by Siemens to address vulnerabilities like CVE-2021-25674 and enhance system security.