CVE-2020-5807 Denial of service in Rockwell FactoryTalk Diagnostics
Remote attackers can crash the FactoryTalk Diagnostics Viewer by sending crafted data, causing a denial of service for local users.
- 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-2020-5807?
CVE-2020-5807 is a high-severity denial of service vulnerability in Rockwell FactoryTalk Diagnostics, published on 29 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An unauthenticated remote attacker can send data to RsvcHost.exe listening on TCP port 5241 to add entries in the FactoryTalk Diagnostics event log. The attacker can specify long fields in the log entry, which can cause an unhandled exception in wcscpy_s() if a local user opens FactoryTalk Diagnostics Viewer (FTDiagViewer.exe) to view the log entry. Observed in FactoryTalk Diagnostics 6.11. All versions of FactoryTalk Diagnostics are affected.
Weakness: CWE-755
Which versions are affected by CVE-2020-5807?
It affects 1 product.
Products include Rockwellautomation Factorytalk Diagnostics.
How do I fix CVE-2020-5807?
No fix has been published for CVE-2020-5807 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-2020-5807 being exploited?
There is no known exploitation of CVE-2020-5807 in the wild and no public exploit code.
Sources
Also known as GHSA-f3hv-32hf-cqw9.