CVE Vulnerabilities

CVE-2020-8332

Time-of-check Time-of-use (TOCTOU) Race Condition

Published: Oct 14, 2020 | Modified: Oct 29, 2020
CVSS 3.x
6.4
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
6.9 MEDIUM
AV:L/AC:M/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

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.

Weakness

The product checks the state of a resource before using that resource, but the resource’s state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.

Affected Software

Name Vendor Start Version End Version
Bladecenter_hs23_firmware Lenovo * tke170b (excluding)

Potential Mitigations

References