CVE-2021-3719 Code injection in ThinkCentre and ThinkStation BIOS
Local attackers with elevated privileges can execute arbitrary code via a vulnerability in the BIOS SMI callback function during sleep state resumption.
- 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-2021-3719?
CVE-2021-3719 is a medium-severity code injection vulnerability in Lenovo ThinkCentre and ThinkStation BIOS, published on 12 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A potential vulnerability in the SMI callback function that saves and restore boot script tables used for resuming from sleep state in some ThinkCentre and ThinkStation models may allow an attacker with local access and elevated privileges to execute arbitrary code.
Weakness: CWE-20
Which versions are affected by CVE-2021-3719?
It affects 20 products.
Products include Lenovo Thinkcentre E93 Firmware, Lenovo Thinkcentre M4500q Firmware, Lenovo Thinkcentre M600 Firmware, Lenovo Thinkcentre M6500t\/S Firmware, Lenovo Thinkcentre M700 Tiny Firmware, Lenovo Thinkcentre M73 Firmware and 14 more.
How do I fix CVE-2021-3719?
No fix has been published for CVE-2021-3719 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2021-3719 being exploited?
There is no known exploitation of CVE-2021-3719 in the wild and no public exploit code.
Sources
Also known as GHSA-rrvf-m2c7-c86r.