CVE-2021-36647
4.7 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
4.5 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
21.6%
Use of a Broken or Risky Cryptographic Algorithm in the function mbedtls_mpi_exp_mod() in lignum.c in Mbed TLS Mbed TLS all versions before 3.0.0, 2.27.0 or 2.16.11 allows attackers with access to precise enough timing and memory access information (typically an untrusted operating system attacking a secure enclave such as SGX or the TrustZone secure world) to recover the private keys used in RSA.
Affected configurations
| CPE | Name | Operator | Version |
|---|---|---|---|
| arm:mbed_tls | arm mbed tls | lt | 2.16.11 |
| arm:mbed_tls | arm mbed tls | lt | 2.27.0 |
| arm:mbed_tls | arm mbed tls | lt | 3.0.0 |
Related
4.7 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
4.5 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
21.6%