CVE-2020-11637 Automation Runtime TFTP Service DoS Vulnerability
An unauthenticated attacker can cause a denial of service in B&R Automation Runtime via a memory leak in the TFTP service.
- 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-2020-11637?
CVE-2020-11637 is a medium-severity denial of service vulnerability in B&R Automation Runtime, published on 15 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A memory leak in the TFTP service in B&R Automation Runtime versions <N4.26, <N4.34, <F4.45, <E4.53, <D4.63, <A4.73 and prior could allow an unauthenticated attacker with network access to cause a denial of service (DoS) condition.
Weakness: CWE-401
Which versions are affected by CVE-2020-11637?
It affects 1 product.
Products include Br-Automation Automation Runtime.
How do I fix CVE-2020-11637?
No fix has been published for CVE-2020-11637 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-2020-11637 being exploited?
There is no known exploitation of CVE-2020-11637 in the wild and no public exploit code.
Other vulnerabilities in B&R Automation Runtime
- CVE-2024-0323 FTP uses unsecure encryption mechanisms
- CVE-2019-19108 B&R Automation Runtime SNMP Authentication and Authorization Weakness
- CVE-2023-3242 Denial of service in B&R Automation Runtime
- CVE-2021-22275 Denial of service vulnerability on Automation Runtime webserver
- CVE-2024-5800 Diffie-Hellman groups with insufficient strength used in SSL/TLS stack of B&R Automation Runtime
Sources
Also known as CVE-2020-10178, GHSA-7j7h-vfmh-v8jc.