CVE-2023-35921 Denial of service in SIMATIC MV540 H
Unauthenticated remote attackers can cause a denial of service on Siemens SIMATIC vision sensors by sending crafted Ethernet frames, requiring manual restarts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-35921?
CVE-2023-35921 is a high-severity denial of service vulnerability in Siemens SIMATIC MV540 H, published on 11 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability has been identified in SIMATIC MV540 H (All versions < V3.3.4), SIMATIC MV540 S (All versions < V3.3.4), SIMATIC MV550 H (All versions < V3.3.4), SIMATIC MV550 S (All versions < V3.3.4), SIMATIC MV560 U (All versions < V3.3.4), SIMATIC MV560 X (All versions < V3.3.4). Affected devices cannot properly process specially crafted Ethernet frames sent to the devices. This could allow an unauthenticated remote attacker to cause a denial of service condition. The affected devices must be restarted manually.
Weakness: CWE-400
Which versions are affected by CVE-2023-35921?
It affects 6 products.
Products include Siemens Simatic Mv540 H Firmware, Siemens Simatic Mv540 S Firmware, Siemens Simatic Mv550 H Firmware, Siemens Simatic Mv550 S Firmware, Siemens Simatic Mv560 U Firmware, Siemens Simatic Mv560 X Firmware.
How do I fix CVE-2023-35921?
No fix has been published for CVE-2023-35921 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-35921 being exploited?
There is no known exploitation of CVE-2023-35921 in the wild and no public exploit code.
Other vulnerabilities in Siemens SIMATIC MV540 H
Sources
Also known as GHSA-8m33-v7qf-p597.