CVE-2022-34400 Memory corruption in CPG BIOS
A local attacker with admin privileges can exploit a heap buffer overflow in Dell BIOS to perform arbitrary writes to SMRAM during SMM.
- 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-2022-34400?
CVE-2022-34400 is a high-severity memory corruption vulnerability in Dell Inspiron 3891 Firmware, published on 1 Feb 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Dell BIOS contains a heap buffer overflow vulnerability. A local attacker with admin privileges could potentially exploit this vulnerability to perform an arbitrary write to SMRAM during SMM.
Which versions are affected by CVE-2022-34400?
It affects 83 products.
Products include Dell Alienware M15 R6 Firmware, Dell Alienware M15 R7 Firmware, Dell Alienware M15 Ryzen Edition R5 Firmware, Dell Alienware M17 R5 Amd Firmware, Dell G15 5510 Firmware, Dell G15 5511 Firmware and 77 more.
How do I fix CVE-2022-34400?
No fix has been published for CVE-2022-34400 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-2022-34400 being exploited?
There is no known exploitation of CVE-2022-34400 in the wild and no public exploit code.
Other vulnerabilities in Dell Inspiron 3891 Firmware
Sources
Also known as GHSA-vjh9-8m4p-gh99.