CVE-2022-31223 Null dereference in CPG BIOS

Low 2.3 Published 12 Sep 2022 Updated 16 Sep 2024

A local authenticated administrator can exploit a null byte vulnerability in Dell BIOS to read system memory.

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-2022-31223?

CVE-2022-31223 is a low-severity vulnerability in Dell CPG BIOS, published on 12 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Dell BIOS versions contain an Improper Neutralization of Null Byte vulnerability. A local authenticated administrator user could potentially exploit this vulnerability by sending unexpected null bytes in order to read memory on the system.

Weakness: CWE-158

Which versions are affected by CVE-2022-31223?

It affects 25 products.

Products include Dell Chengming 3900 Firmware, Dell Inspiron 14 Plus 7420 Firmware, Dell Inspiron 16 Plus 7620 Firmware, Dell Inspiron 3910 Firmware, Dell Inspiron 5320 Firmware, Dell Inspiron 5420 Firmware and 19 more.

How do I fix CVE-2022-31223?

No fix has been published for CVE-2022-31223 yet. Limit exposure of the affected software until one is available.

Is CVE-2022-31223 being exploited?

There is no known exploitation of CVE-2022-31223 in the wild and no public exploit code.

Sources

Also known as GHSA-2qf2-mq6q-w69h.