PT-2021-21411 · Realtek · Realtek Rtsupx Usb Utility Driver

Published 2021-11-02 · Updated 2022-07-12 · CVE-2021-36924

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 a pool overflow, leading to Escalation of Privileges, Denial of Service, and Code Execution via a crafted Device IO Control packet to a device.

Recommendations For versions 1.14.0.0 and earlier, as a temporary workaround, consider restricting access to the RtsUpx.sys driver until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Time Of Check To Time Of Use

Weakness Enumeration

CWE-367

Related Identifiers

CVE-2021-36924

Affected Products

Realtek Rtsupx Usb Utility Driver

References · 5

• https://osv.dev/vulnerability/CVE-2021-36924 · Vendor Advisory
• https://realtek.com/images/safe-report/Realtek_RtsUpx_Security_Advisory_Report.pdf · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-36924 · Security Note
• https://t.me/cibsecurity/31600 · Telegram Post
• https://sentinelone.com/resources/category/report · Note