Mbed TLS before 2.28.10 and 3.x before 3.6.3, in some cases of failed memory allocation or hardware errors, uses uninitialized stack memory to compose the TLS Finished message, potentially leading to authentication bypasses such as replays.
Weakness
The product uses or accesses a resource that has not been initialized.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mbed_tls | Arm | * | 2.28.10 (excluding) |
| Mbed_tls | Arm | 3.0.0 (including) | 3.6.3 (excluding) |
| Mbedtls | Ubuntu | devel | * |
| Mbedtls | Ubuntu | esm-apps/bionic | * |
| Mbedtls | Ubuntu | esm-apps/focal | * |
| Mbedtls | Ubuntu | esm-apps/jammy | * |
| Mbedtls | Ubuntu | esm-apps/noble | * |
| Mbedtls | Ubuntu | esm-apps/xenial | * |
| Mbedtls | Ubuntu | focal | * |
| Mbedtls | Ubuntu | jammy | * |
| Mbedtls | Ubuntu | noble | * |
| Mbedtls | Ubuntu | oracular | * |
| Mbedtls | Ubuntu | plucky | * |
| Mbedtls | Ubuntu | questing | * |
| Mbedtls | Ubuntu | upstream | * |