Arm Mbed TLS before 2.14.1, before 2.7.8, and before 2.1.17 allows a local unprivileged attacker to recover the plaintext of RSA decryption, which is used in RSA-without-(EC)DH(E) cipher suites.
Weakness
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mbed_tls | Arm | 2.1.0 (including) | 2.1.17 (excluding) |
| Mbed_tls | Arm | 2.7.0 (including) | 2.7.8 (excluding) |
| Mbed_tls | Arm | 2.14.0 (including) | 2.14.1 (excluding) |
| Mbedtls | Ubuntu | bionic | * |
| Mbedtls | Ubuntu | trusty | * |
| Mbedtls | Ubuntu | upstream | * |
| Mbedtls | Ubuntu | xenial | * |
| Polarssl | Ubuntu | trusty | * |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/122.html
- https://cwe.mitre.org/data/definitions/233.html
- https://cwe.mitre.org/data/definitions/58.html
References
- http://cat.eyalro.net/
- https://tls.mbed.org/tech-updates/releases/mbedtls-2.14.1-2.7.8-and-2.1.17-released
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2018-03
- http://cat.eyalro.net/
- https://tls.mbed.org/tech-updates/releases/mbedtls-2.14.1-2.7.8-and-2.1.17-released
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2018-03