What is CVE-2017-3775?

CVE-2017-3775 is a medium-severity vulnerability in Lenovo Flex System X240 M5, classified under Improper Authentication. CVSS score: 6.4/10. Published 2018-05-04.

How severe is CVE-2017-3775?

Medium severity. CVSS v3 base score is 6.4 out of 10.

Auth bypass in Lenovo Flex System X240 M5

CVE-2017-3775

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.

Vulnerability class: Broken Authentication

EPSS: 0.003 (19.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Lenovo Flex_system_x240_m5
Lenovo Flex_system_x240_m5_bios
Lenovo Flex_system_x280_x6
Lenovo Flex_system_x280_x6_bios
Lenovo Flex_system_x480_x6
Lenovo Flex_system_x480_x6_bios
Lenovo Flex_system_x880
Lenovo Flex_system_x880_bios
Lenovo Nextscale_nx360_m5
Lenovo Nextscale_nx360_m5_bios

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

psirt@lenovo.com (x_refsource_CONFIRM, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2017-3775?: CVE-2017-3775 is a medium-severity vulnerability in Lenovo Flex System X240 M5, classified under Improper Authentication. CVSS score: 6.4/10. Published 2018-05-04.
How severe is CVE-2017-3775?: Medium severity. CVSS v3 base score is 6.4 out of 10.