PT-2021-21165 · Fortinet · Forticlient

Published 2021-11-02 · Updated 2022-05-03 · CVE-2021-36183

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 FortiClient for Windows versions 7.0.1 and below FortiClient for Windows versions 6.4.2 and below

Description An improper authorization issue may allow a local unprivileged attacker to escalate their privileges to SYSTEM via the named pipe responsible for FortiClient updates. This could potentially impact a significant number of devices, although the exact number is not specified.

Recommendations For FortiClient for Windows versions 7.0.1 and below, update to a version above 7.0.1 to resolve the issue. For FortiClient for Windows versions 6.4.2 and below, update to a version above 6.4.2 to resolve the issue. As a temporary workaround, consider restricting access to the named pipe responsible for FortiClient updates until a patch is available.

Fix

Related Identifiers

CVE-2021-36183

Affected Products

Forticlient

References · 4

• https://fortiguard.com/advisory/FG-IR-20-079 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-36183 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-36183 · Security Note
• https://t.me/cibsecurity/31624 · Telegram Post