CVE-2023-27857 Rockwell Automation ThinManager ThinServer Heap-Based Buffer Overflow

High 7.5 Published 22 Mar 2023 Updated 21 Oct 2024

An unauthenticated remote attacker can crash the ThinServer application via a heap-based buffer over-read, causing a denial of 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-2023-27857?

CVE-2023-27857 is a high-severity memory corruption vulnerability in Rockwell Automation ThinManager ThinServer, published on 22 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In affected versions, a heap-based buffer over-read condition occurs when the message field indicates more data than is present in the message field

in Rockwell Automation's ThinManager ThinServer. An unauthenticated remote attacker can exploit this vulnerability to crash ThinServer.exe due to a read access violation.

Weakness: CWE-125

Which versions are affected by CVE-2023-27857?

It affects 1 product.

Products include Rockwellautomation Thinmanager.

How do I fix CVE-2023-27857?

No fix has been published for CVE-2023-27857 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2023-27857 being exploited?

There is no known exploitation of CVE-2023-27857 in the wild and no public exploit code.

Sources

Also known as GHSA-pr5c-7q57-fp6g.