CVE-2023-4857 Auth bypass in SMM, SMM2, FPC
An authenticated user can bypass authentication in Lenovo SMM/SMM2 and FPC firmware to execute IPMI calls and expose limited system information.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-4857?
CVE-2023-4857 is a high-severity authentication bypass vulnerability in Lenovo SMM, SMM2, FPC, published on 15 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An authentication bypass vulnerability was identified in SMM/SMM2 and FPC that could allow an authenticated user to execute certain IPMI calls that could lead to exposure of limited system information.
Weakness: CWE-306
Which versions are affected by CVE-2023-4857?
How do I fix CVE-2023-4857?
No fix has been published for CVE-2023-4857 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2023-4857 being exploited?
There is no known exploitation of CVE-2023-4857 in the wild and no public exploit code.
Sources
Also known as GHSA-877w-cfhh-j9x8.