An issue was discovered in Mbed TLS 3.5.1. There is persistent handshake denial if a client sends a TLS 1.3 ClientHello without extensions.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mbed_tls | Arm | 3.4.0 (excluding) | 3.5.1 (including) |
| Mbedtls | Ubuntu | bionic | * |
| Mbedtls | Ubuntu | focal | * |
| Mbedtls | Ubuntu | lunar | * |
| Mbedtls | Ubuntu | mantic | * |
| Mbedtls | Ubuntu | oracular | * |
| Mbedtls | Ubuntu | upstream | * |
| Mbedtls | Ubuntu | xenial | * |