CVE-2020-6084 Denial of service in Allen-Bradley
An attacker can cause a denial of service in Allen-Bradley Flex IO devices by sending a specially crafted network request with an invalid Electronic Key Segment.
- 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-2020-6084?
CVE-2020-6084 is a high-severity denial of service vulnerability in Allen-Bradley, published on 19 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An exploitable denial of service vulnerability exists in the ENIP Request Path Logical Segment functionality of Allen-Bradley Flex IO 1794-AENT/B 4.003. A specially crafted network request can cause a loss of communications with the device resulting in denial-of-service. An attacker can send a malicious packet to trigger this vulnerability by sending an Electronic Key Segment with less bytes than required by the Key Format Table.
Weakness: CWE-120
Which versions are affected by CVE-2020-6084?
It affects 1 product.
Products include Rockwellautomation Flex I\/O 1794-Aent.
How do I fix CVE-2020-6084?
No fix has been published for CVE-2020-6084 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-2020-6084 being exploited?
There is no known exploitation of CVE-2020-6084 in the wild and no public exploit code.
Other vulnerabilities in Allen-Bradley
Sources
Also known as GHSA-8jr7-f4h9-8mjr.