PT-2021-21409 · Realtek · Realtek Rtsupx Usb Utility Driver

Published 2021-11-02 · Updated 2022-07-12 · CVE-2021-36922

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 Realtek RtsUpx USB Utility Driver for Camera/Hub/Audio versions 1.14.0.0 and earlier

Description The issue allows local low-privileged users to achieve unauthorized access to USB devices, potentially leading to escalation of privileges, denial of service, code execution, and information disclosure. This can be achieved via a crafted Device IO Control packet to a device.

Recommendations For versions 1.14.0.0 and earlier, update to a version later than 1.14.0.0 to resolve the issue. As a temporary workaround, consider restricting access to the RtsUpx.sys driver to minimize the risk of exploitation.

Fix

Related Identifiers

CVE-2021-36922

Affected Products

Realtek Rtsupx Usb Utility Driver

References · 5

• https://osv.dev/vulnerability/CVE-2021-36922 · Vendor Advisory
• https://realtek.com/images/safe-report/Realtek_RtsUpx_Security_Advisory_Report.pdf · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-36922 · Security Note
• https://sentinelone.com/resources/category/report · Note
• https://t.me/cibsecurity/31597 · Telegram Post