CVE-2023-27373 Other in n/a
Attackers can tamper with EFI variables to overlap SMRAM, bypassing security protections in InsydeH2O firmware.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-27373?
CVE-2023-27373 is a medium-severity vulnerability in Insyde Insydeh2o, published on 7 Aug 2023. 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 with kernel 5.0 through 5.5. Due to insufficient input validation, an attacker can tamper with a runtime-accessible EFI variable to cause a dynamic BAR setting to overlap SMRAM.
Weakness: CWE-20
Which versions are affected by CVE-2023-27373?
It affects 1 product.
Products include Insyde Insydeh2o.
How do I fix CVE-2023-27373?
No fix has been published for CVE-2023-27373 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-27373 being exploited?
There is no known exploitation of CVE-2023-27373 in the wild and no public exploit code.
Other vulnerabilities in Insyde Insydeh2o
Sources
Also known as GHSA-79rc-fcmg-3r4m.