What is CVE-2020-8332?

CVE-2020-8332 is a medium-severity vulnerability in Ibm System X, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 6.4/10. Published 2020-10-14.

How severe is CVE-2020-8332?

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

Vulnerability in Ibm System X

CVE-2020-8332

A potential vulnerability in the SMI callback function used in the legacy BIOS mode USB drivers in some legacy Lenovo and IBM System x servers may allow arbitrary code execution. Servers operating in UEFI mode are not affected.

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

EPSS: 0.002 (13.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ibm System X — versions various
Lenovo Bladecenter_hs23
Lenovo Bladecenter_hs23e
Lenovo Bladecenter_hs23e_firmware
Lenovo Bladecenter_hs23_firmware
Lenovo Compute_node-x440
Lenovo Compute_node-x440_firmware
Lenovo Flex_system_x220
Lenovo Flex_system_x220_firmware
Lenovo Flex_system_x240

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

psirt@lenovo.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2020-8332?: CVE-2020-8332 is a medium-severity vulnerability in Ibm System X, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 6.4/10. Published 2020-10-14.
How severe is CVE-2020-8332?: Medium severity. CVSS v3 base score is 6.4 out of 10.