CVE-2022-35893 Memory corruption in n/a
An SMM memory corruption flaw in InsydeH2O firmware allows attackers to write to SMRAM, potentially escalating privileges to System Management Mode.
- 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-2022-35893?
CVE-2022-35893 is a high-severity memory corruption vulnerability in Insyde Insydeh2o, published on 23 Sep 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 with kernel 5.0 through 5.5. An SMM memory corruption vulnerability in the FvbServicesRuntimeDxe driver allows an attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.
Weakness: CWE-20
Which versions are affected by CVE-2022-35893?
It affects 1 product.
Products include Insyde Insydeh2o.
How do I fix CVE-2022-35893?
No fix has been published for CVE-2022-35893 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-2022-35893 being exploited?
There is no known exploitation of CVE-2022-35893 in the wild and no public exploit code.
Other vulnerabilities in Insyde Insydeh2o
Sources
Also known as GHSA-q472-4r55-2p86.