CVE-2021-42059 Memory corruption in n/a
A stack-based buffer overflow in the UEFI DisplayTypeDxe driver allows attackers to execute arbitrary code during the boot process.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-42059?
CVE-2021-42059 is a medium-severity memory corruption vulnerability in Insyde Insydeh2o, published on 3 Feb 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue was discovered in Insyde InsydeH2O Kernel 5.0 before 05.08.41, Kernel 5.1 before 05.16.41, Kernel 5.2 before 05.26.41, Kernel 5.3 before 05.35.41, and Kernel 5.4 before 05.42.20. A stack-based buffer overflow leads toarbitrary code execution in UEFI DisplayTypeDxe DXE driver.
Weakness: CWE-787
Which versions are affected by CVE-2021-42059?
It affects 15 products.
Products include Insyde Insydeh2o, Siemens Simatic Field Pg M5 Firmware, Siemens Simatic Field Pg M6 Firmware, Siemens Simatic Ipc127e Firmware, Siemens Simatic Ipc227g Firmware, Siemens Simatic Ipc277g Firmware and 9 more.
How do I fix CVE-2021-42059?
No fix has been published for CVE-2021-42059 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-2021-42059 being exploited?
There is no known exploitation of CVE-2021-42059 in the wild and no public exploit code.
Other vulnerabilities in Insyde Insydeh2o
Sources
Also known as GHSA-27rf-x255-jv68.