CVE-2023-27471 Missing authorization in n/a
Attackers can overwrite the MeSetup UEFI variable via OS APIs, potentially causing a platform denial of service.
- 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-2023-27471?
CVE-2023-27471 is a medium-severity missing authorization vulnerability in Insyde Insydeh2o, published on 18 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. UEFI implementations do not correctly protect and validate information contained in the 'MeSetup' UEFI variable. On some systems, this variable can be overwritten using operating system APIs. Exploitation of this vulnerability could potentially lead to denial of service for the platform.
Which versions are affected by CVE-2023-27471?
It affects 1 product.
Products include Insyde Insydeh2o.
How do I fix CVE-2023-27471?
No fix has been published for CVE-2023-27471 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2023-27471 being exploited?
There is no known exploitation of CVE-2023-27471 in the wild and no public exploit code.
Other vulnerabilities in Insyde Insydeh2o
Sources
Also known as GHSA-8fq9-hpp7-6h47.