CVE-2021-25671 Denial of service in RWG1.M12
Attackers can cause a partial denial-of-service on Siemens RWG gateways by sending crafted ARP packets, requiring a restart to recover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-25671?
CVE-2021-25671 is a medium-severity denial of service vulnerability in Siemens RWG1.M12, published on 13 Jul 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 RWG1.M12 (All versions < V1.16.16), RWG1.M12D (All versions < V1.16.16), RWG1.M8 (All versions < V1.16.16). Sending specially crafted ARP packets to an affected device could cause a partial denial-of-service, preventing the device to operate normally. A restart is needed to restore normal operations.
Weakness: CWE-770
Which versions are affected by CVE-2021-25671?
It affects 3 products.
Products include Siemens Rwg1.m12 Firmware, Siemens Rwg1.m12d Firmware, Siemens Rwg1.m8 Firmware.
How do I fix CVE-2021-25671?
No fix has been published for CVE-2021-25671 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-2021-25671 being exploited?
There is no known exploitation of CVE-2021-25671 in the wild and no public exploit code.
Sources
Also known as GHSA-pj8q-v235-p5pv.