CVE-2021-44440 Memory corruption in JT Utilities
An attacker can execute arbitrary code by tricking a user into opening a specially crafted JT file with vulnerable Siemens JTTK library versions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-44440?
CVE-2021-44440 is a high-severity memory corruption vulnerability in Siemens JT Utilities, published on 14 Dec 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A vulnerability has been identified in JT Utilities (All versions < V13.1.1.0), JTTK (All versions < V11.1.1.0). JTTK library in affected products is vulnerable to memory corruption condition while parsing specially crafted JT files. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-14912)
Which versions are affected by CVE-2021-44440?
It affects 2 products.
Products include Siemens Jt Open Toolkit, Siemens Jt Utilities.
How do I fix CVE-2021-44440?
No fix has been published for CVE-2021-44440 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-2021-44440 being exploited?
There is no known exploitation of CVE-2021-44440 in the wild and no public exploit code.
Other vulnerabilities in Siemens JT Utilities
Sources
Also known as GHSA-6wch-4f3v-5j78.