CVE-2020-26993 Memory corruption in JT2Go
Attackers can execute arbitrary code via crafted CGM files due to a stack buffer overflow in Siemens JT2Go and Teamcenter Visualization.
- 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-2020-26993?
CVE-2020-26993 is a high-severity memory corruption vulnerability in Siemens Jt2go, published on 12 Jan 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 JT2Go (All versions < V13.1.0), Teamcenter Visualization (All versions < V13.1.0). Affected applications lack proper validation of user-supplied data when parsing CGM files. This could lead to a stack based buffer overflow while trying to copy to a buffer in the font index handling function. An attacker could leverage this vulnerability to execute code in the context of the current process.
Which versions are affected by CVE-2020-26993?
It affects 2 products.
Products include Siemens Jt2go, Siemens Teamcenter Visualization.
How do I fix CVE-2020-26993?
No fix has been published for CVE-2020-26993 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-2020-26993 being exploited?
There is no known exploitation of CVE-2020-26993 in the wild and no public exploit code.
Other vulnerabilities in Siemens Jt2go
Sources
Also known as GHSA-2f5g-rwwg-jqh6.