CVE-2021-21778 Denial of service in MZ Automation"
An attacker can cause loss of communications in lib60870.NET by sending a specially crafted unauthenticated network request.
- 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-2021-21778?
CVE-2021-21778 is a high-severity denial of service vulnerability in MZ Automation", published on 25 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A denial of service vulnerability exists in the ASDU message processing functionality of MZ Automation GmbH lib60870.NET 2.2.0. A specially crafted network request can lead to loss of communications. An attacker can send an unauthenticated message to trigger this vulnerability.
Weakness: CWE-617
Which versions are affected by CVE-2021-21778?
It affects 1 product.
Products include Mz-Automation Lib60870.
How do I fix CVE-2021-21778?
No fix has been published for CVE-2021-21778 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-2021-21778 being exploited?
There is no known exploitation of CVE-2021-21778 in the wild and no public exploit code.
Other vulnerabilities in MZ Automation"
Sources
Also known as GHSA-f72g-c5hf-789v.