CVE-2020-5348 Use after free in CPG BIOS
A local attacker can exploit a use-after-free flaw in Dell Latitude BIOS to execute arbitrary code in system management mode.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-5348?
CVE-2020-5348 is a medium-severity use after free vulnerability in Dell CPG BIOS, published on 3 Apr 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Dell Latitude 7202 Rugged Tablet BIOS versions prior to A28 contain a UAF vulnerability in EFI_BOOT_SERVICES in system management mode. A local unauthenticated attacker may exploit this vulnerability by overwriting the EFI_BOOT_SERVICES structure to execute arbitrary code in system management mode.
Weakness: CWE-416
Which versions are affected by CVE-2020-5348?
It affects 1 product.
Products include Dell Latitude 7202 Firmware.
How do I fix CVE-2020-5348?
No fix has been published for CVE-2020-5348 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2020-5348 being exploited?
There is no known exploitation of CVE-2020-5348 in the wild and no public exploit code.
Sources
Also known as GHSA-4m8x-97cg-mq8w.