CVE-2023-39283 Memory corruption in n/a
Attackers can exploit SMM memory corruption in InsydeH2O BIOS to escalate privileges by sending arbitrary data to SMRAM.
- 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-2023-39283?
CVE-2023-39283 is a high-severity memory corruption vulnerability in Insyde Insydeh2o, published on 2 Nov 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An SMM memory corruption vulnerability in the SMM driver (SMRAM write) in CsmInt10HookSmm in Insyde InsydeH2O with kernel 5.0 through 5.5 allows attackers to send arbitrary data to SMM which could lead to privilege escalation.
Weakness: CWE-787
Which versions are affected by CVE-2023-39283?
It affects 1 product.
Products include Insyde Insydeh2o.
How do I fix CVE-2023-39283?
No fix has been published for CVE-2023-39283 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-2023-39283 being exploited?
There is no known exploitation of CVE-2023-39283 in the wild and no public exploit code.
Other vulnerabilities in Insyde Insydeh2o
Sources
Also known as GHSA-hq2f-86fm-7823.