CVE-2023-47252 Memory corruption in n/a
Attackers can tamper with SMM communication buffers via out-of-bounds access in InsydeH2O firmware, potentially modifying data or escalating privileges.
- 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-2023-47252?
CVE-2023-47252 is a medium-severity memory corruption vulnerability in n/a, published on 26 Apr 2024. 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 PnpSmm in Insyde InsydeH2O with kernel 5.0 through 5.6. There is a possible out-of-bounds access in the SMM communication buffer, leading to tampering. The PNP-related SMI sub-functions do not verify data size before getting it from the communication buffer, which could lead to possible circumstances where the data immediately following the command buffer could be destroyed with a fixed value. This is fixed in kernel 5.2 v05.28.45, kernel 5.3 v05.37.45, kernel 5.4 v05.45.45, kernel 5.5 v05.53.45, and kernel 5.6 v05.60.45.
Weakness: CWE-787
Which versions are affected by CVE-2023-47252?
It affects 1 product.
Products include Insyde Kernel.
How do I fix CVE-2023-47252?
No fix has been published for CVE-2023-47252 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-2023-47252 being exploited?
There is no known exploitation of CVE-2023-47252 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-46ff-m72j-q8vp.