CVE-2022-34390 Memory corruption in CPG BIOS
A local attacker can exploit an uninitialized variable in Dell BIOS to execute arbitrary code in SMRAM, requiring a firmware patch.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-34390?
CVE-2022-34390 is a high-severity memory corruption vulnerability in Dell CPG BIOS, published on 12 Oct 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Dell BIOS contains a use of uninitialized variable vulnerability. A local authenticated malicious user may potentially exploit this vulnerability by using an SMI to gain arbitrary code execution in SMRAM.
Which versions are affected by CVE-2022-34390?
It affects 2 products.
Products include Dell Alienware Area-51 R4 Firmware, Dell Alienware Area-51 R5 Firmware.
How do I fix CVE-2022-34390?
No fix has been published for CVE-2022-34390 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-2022-34390 being exploited?
There is no known exploitation of CVE-2022-34390 in the wild and no public exploit code.
Other vulnerabilities in Dell CPG BIOS
Sources
Also known as GHSA-g9fm-c939-xc3q.