CVE-2017-3775 Security feature bypass in Some Lenovo Flex System and Lenovo System x products
Attackers with physical access can bypass Secure Boot to execute unsigned code on Lenovo System x servers.
- 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-2017-3775?
CVE-2017-3775 is a medium-severity vulnerability in Some Lenovo Flex System and Lenovo System x products, published on 4 May 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Some Lenovo System x server BIOS/UEFI versions, when Secure Boot mode is enabled by a system administrator, do not properly authenticate signed code before booting it. As a result, an attacker with physical access to the system could boot unsigned code.
Weakness: CWE-287
Which versions are affected by CVE-2017-3775?
It affects 11 products.
Products include Lenovo Flex System X240 M5 Bios, Lenovo Flex System X280 X6 Bios, Lenovo Flex System X480 X6 Bios, Lenovo Flex System X880 Bios, Lenovo Nextscale Nx360 M5 Bios, Lenovo System X3250 M6 Bios and 5 more.
How do I fix CVE-2017-3775?
No fix has been published for CVE-2017-3775 yet. Limit exposure of the affected software until one is available.
Is CVE-2017-3775 being exploited?
There is no known exploitation of CVE-2017-3775 in the wild and no public exploit code.
Other vulnerabilities in Some Lenovo Flex System and Lenovo System x products
Sources
Also known as GHSA-m3r2-464w-g5x4.