PT-2021-21130 · Unknown+1 · Optee-Os Csu Driver+1

Andrea Barisani + 1 · Published 2021-12-07 · Updated 2021-12-09 · CVE-2021-36133

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: OPTEE-OS CSU driver for NXP i.MX SoC devices (affected versions not specified)

Description: The issue involves a lack of security access configuration in the OPTEE-OS CSU driver for several NXP i.MX SoC device models. This results in a TrustZone bypass, allowing the NonSecure World to perform arbitrary memory read and write operations on Secure World memory. The exploitation of this issue involves a DMA capable peripheral.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Incorrect Permission

Weakness Enumeration

CWE-732

Related Identifiers

CVE-2021-36133

Affected Products

Debian

Optee-Os Csu Driver

References · 11

• https://ubuntu.com/security/CVE-2021-36133 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-36133 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-36133 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-36133 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-36133 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-36133 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-36133 · Security Note
• https://github.com/OP-TEE/optee_os/security/advisories/GHSA-6q85-3ph3-rm47 · Note
• https://github.com/f-secure-foundry/advisories/blob/master/Security_Advisory-Ref_FSC-HWSEC-VR2021-0001-OP-TEE_TrustZone_bypass.txt · Note
• https://t.me/cibsecurity/33528 · Telegram Post
• https://t.me/cvenotify/24384 · Telegram Post