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.
| Version | Score | Severity | Vector String |
|---|---|---|---|
| 3.1 | 5.3 | Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N |
| Product | Vendor | Version |
|---|---|---|
| n/a | n/a | < 6422e8471890273994fe8cc6d452b0dcd2c9483e |