Vulnerability in Arm Mbed Tls
CVE-2022-46392
An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. An adversary with access to precise enough information about memory accesses (typically, an untrusted operating system attacking a secure enclave) can recover an RSA private key after observing the victim performing a single private-key operation, if the window size (MBEDTLS_MPI_WINDOW_SIZE) used for the exponentiation is 3 or smaller.
EPSS: 0.008 (52.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N.
Affected products
- Arm Mbed_tls
- Trustedfirmware Mbed_tls
- Fedoraproject Fedora — versions 36, 37
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Third Party Advisory, Release Notes)
- cve@mitre.org (Third Party Advisory, Release Notes)
- cve@mitre.org (vendor-advisory)
- cve@mitre.org (vendor-advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2022-46392?
- CVE-2022-46392 is a medium-severity vulnerability in Arm Mbed Tls, classified under Observable Discrepancy. CVSS score: 5.3/10. Published 2022-12-15.
- How severe is CVE-2022-46392?
- Medium severity. CVSS v3 base score is 5.3 out of 10.