CVE-2020-5388 Privilege escalation in CPG BIOS
A local attacker can exploit an SMM buffer verification flaw in Dell BIOS to execute arbitrary code in SMRAM, requiring a firmware upgrade.
- 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-2020-5388?
CVE-2020-5388 is a medium-severity vulnerability in Dell CPG BIOS, published on 10 Nov 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Dell Inspiron 15 7579 2-in-1 BIOS versions prior to 1.31.0 contain an Improper SMM communication buffer verification vulnerability. A local authenticated malicious user may potentially exploit this vulnerability by using an SMI to gain arbitrary code execution in SMRAM.
Weakness: CWE-119
Which versions are affected by CVE-2020-5388?
It affects 1 product.
Products include Dell Inspiron 15 7579 Firmware.
How do I fix CVE-2020-5388?
No fix has been published for CVE-2020-5388 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-5388 being exploited?
There is no known exploitation of CVE-2020-5388 in the wild and no public exploit code.
Sources
Also known as GHSA-mm45-c98x-rq98.