CVE-2021-25674 Null dereference in SIMATIC S7-PLCSIM V5.4
A local attacker can cause a denial of service in SIMATIC S7-PLCSIM by opening a specially crafted file, triggering a null pointer dereference.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-25674?
CVE-2021-25674 is a medium-severity vulnerability in Siemens SIMATIC S7-PLCSIM V5.4, published on 15 Mar 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability has been identified in SIMATIC S7-PLCSIM V5.4 (All versions). An attacker with local access to the system could cause a Denial-of-Service condition in the application when it is used to open a specially crafted file. As a consequence, a NULL pointer deference condition could cause the application to terminate unexpectedly and must be restarted to restore the service.
Weakness: CWE-476
Which versions are affected by CVE-2021-25674?
It affects 1 product.
Products include Siemens Simatic S7-Plcsim.
How do I fix CVE-2021-25674?
No fix has been published for CVE-2021-25674 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-25674 being exploited?
There is no known exploitation of CVE-2021-25674 in the wild and no public exploit code.
Other vulnerabilities in Siemens SIMATIC S7-PLCSIM V5.4
Sources
Also known as GHSA-jg4g-p5jg-phcr.