CVE-2016-8222 Privilege escalation in ThinkPad systems
A signed kernel driver flaw allows administrators to alter BIOS settings or cause denial of service via System Management Mode calls.
- 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-2016-8222?
CVE-2016-8222 is a medium-severity vulnerability in Lenovo Group Ltd. ThinkPad systems, published on 30 Nov 2016. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability has been identified in a signed kernel driver for the BIOS of some ThinkPad systems that can allow an attacker with Windows administrator-level privileges to call System Management Mode (SMM) services. This could lead to a denial of service attack or allow certain BIOS variables or settings to be altered (such as boot sequence). The setting or changing of BIOS passwords is not affected by this vulnerability.
Weakness: CWE-284
Which versions are affected by CVE-2016-8222?
It affects 74 products.
Products include Lenovo Thinkpad 10 Ella 2 Bios, Lenovo Thinkpad 11e Beema Bios, Lenovo Thinkpad 11e Braswell Bios, Lenovo Thinkpad 11e Broadwell Bios, Lenovo Thinkpad 11e Skylake Bios, Lenovo Thinkpad 13e Bios and 68 more.
How do I fix CVE-2016-8222?
No fix has been published for CVE-2016-8222 yet. Limit exposure of the affected software until one is available.
Is CVE-2016-8222 being exploited?
There is no known exploitation of CVE-2016-8222 in the wild and no public exploit code.
Sources
Also known as GHSA-7jpm-3pp4-32q5.