Vulnerability in Trustedfirmware Op-Tee
CVE-2022-47549
An unprotected memory-access operation in optee_os in TrustedFirmware Open Portable Trusted Execution Environment (OP-TEE) before 3.20 allows a physically proximate adversary to bypass signature verification and install malicious trusted applications via electromagnetic fault injections.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (33.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
Weakness classification (CWE)
References
- github.com/OP-TEE/optee_os/security/advisories/GHSA-r64m-h886-hw6g (Third Party Advisory)
- people.linaro.org/~joakim.bech/reports/Breaking_cross-world_isolation_on_ARM_Tr… (Technical Description, Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-47549?
- CVE-2022-47549 is a medium-severity vulnerability in Trustedfirmware Op-Tee, classified under Improper Verification of Cryptographic Signature. CVSS score: 6.4/10. Published 2022-12-19.
- How severe is CVE-2022-47549?
- Medium severity. CVSS v3 base score is 6.4 out of 10.