CVE-2019-6190 Denial of service in BIOS
Attackers can cause intermittent clearing of Platform Configuration Registers after sleep on Lenovo systems with Intel TXT enabled, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2019-6190?
CVE-2019-6190 is a medium-severity denial of service vulnerability in Lenovo BIOS, published on 14 Feb 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Lenovo was notified of a potential denial of service vulnerability, affecting various versions of BIOS for Lenovo Desktop, Desktop - All in One, and ThinkStation, that could cause PCRs to be cleared intermittently after resuming from sleep (S3) on systems with Intel TXT enabled.
Weakness: CWE-665
Which versions are affected by CVE-2019-6190?
It affects 182 products.
Products include Lenovo 510-15ikl Firmware, Lenovo 510s-08ikl Firmware, Lenovo A340-22 Iwl Firmware, Lenovo A340-22ast Firmware, Lenovo A340-22icb Firmware, Lenovo A340-24 Iwl Firmware and 176 more.
How do I fix CVE-2019-6190?
No fix has been published for CVE-2019-6190 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-6190 being exploited?
There is no known exploitation of CVE-2019-6190 in the wild and no public exploit code.
Sources
Also known as GHSA-gc67-c7w8-76pc.