CVE-2020-7584 Denial of service in SIMATIC S7-200 SMART CPU family
An attacker can cause a Denial-of-Service by overwhelming the device with incoming connections, affecting Siemens SIMATIC S7-200 SMART CPUs.
- 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-2020-7584?
CVE-2020-7584 is a high-severity denial of service vulnerability in Siemens AG SIMATIC S7-200 SMART CPU family, published on 14 Jul 2020. 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 S7-200 SMART CPU family (All versions >= V2.2 < V2.5.1). Affected devices do not properly handle large numbers of new incomming connections and could crash under certain circumstances. An attacker may leverage this to cause a Denial-of-Service situation.
Weakness: CWE-400
Which versions are affected by CVE-2020-7584?
It affects 2 products.
Products include Siemens Simatic S7-200 Smart Sr Cpu Firmware, Siemens Simatic S7-200 Smart St Cpu Firmware.
How do I fix CVE-2020-7584?
No fix has been published for CVE-2020-7584 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-2020-7584 being exploited?
There is no known exploitation of CVE-2020-7584 in the wild and no public exploit code.
Sources
Also known as GHSA-vpvj-7qfp-4qgg.