Medium severity · published Dec 19, 2022
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…
6.4
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Physical
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
Op-tee · Trustedfirmware
before 3.20 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-47549
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-47549
Third Party Advisory
https://github.com/OP-TEE/optee_os/security/advisories/GHSA-r64m-h886-hw6g
Exploit
https://people.linaro.org/~joakim.bech/reports/Breaking_cross-world_isolation_on_ARM_TrustZone_through_EM_faults_coredumps_and_UUID_confusion.pdf
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