PT-2021-5593 · Lenovo · Lenovo System Interface Foundation

Published 2021-10-29 · Updated 2022-05-26 · CVE-2021-3969

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Lenovo System Interface Foundation versions prior to 1.1.20.3

Description The issue is caused by a Time of Check Time of Use (TOCTOU) situation, also described as a "ситуация гонки" or race condition, in the IMController component. This could allow a local attacker to elevate their privileges.

Recommendations For versions prior to 1.1.20.3, update to version 1.1.20.3 or later to resolve the issue.

Fix

Time Of Check To Time Of Use

Weakness Enumeration

CWE-367

Related Identifiers

BDU:2022-00027

CVE-2021-3969

Affected Products

Lenovo System Interface Foundation

References · 10

• https://bdu.fstec.ru/vul/2022-00027 · Security Note
• https://osv.dev/vulnerability/CVE-2021-3969 · Vendor Advisory
• https://support.lenovo.com/us/en/product_security/LEN-75210 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-3969 · Security Note
• https://t.me/true_secator/2456 · Telegram Post
• https://t.me/pentestingnews/15945 · Telegram Post
• https://t.me/cybersecuritytechnologies/5000 · Telegram Post
• https://research.nccgroup.com/2021/12/15/technical-advisory-lenovo-imcontroller-local-privilege-escalation-cve-2021-3922-cve-2021-3969 · Note
• https://support.lenovo.com/cy/en/product_security/len-75210 · Note
• https://t.me/pentestingnews/15954 · Telegram Post