An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.2.0. In some configurations, an unauthenticated attacker can send an invalid ClientHello message to a DTLS server that causes a heap-based buffer over-read of up to 255 bytes. This can cause a server crash or possibly information disclosure based on error responses. Affected configurations have MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE enabled and MBEDTLS_SSL_IN_CONTENT_LEN less than a threshold that depends on the configuration: 258 by

An issue was discovered in Mbed TLS before 2.28.1 and 3.x before 3.2.0. In some configurations, an unauthenticated attacker can send an invalid ClientHello message to a DTLS server that causes a heap-based buffer over-read of up to 255 bytes. This can cause a server crash or possibly information disclosure based on error responses. Affected configurations have MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE enabled and MBEDTLS_SSL_IN_CONTENT_LEN less than a threshold that depends on the configuration: 258 by

OR
     *cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:* versions up to (excluding) 2.28.2
     *cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:* versions from (including) 3.0.0 up to (excluding) 3.2.0

NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

NIST CWE-125

https://github.com/Mbed-TLS/mbedtls/releases No Types Assigned

https://github.com/Mbed-TLS/mbedtls/releases Release Notes, Third Party Advisory

https://mbed-tls.readthedocs.io/en/latest/security-advisories/advisories/mbedtls-security-advisory-2022-07.html No Types Assigned

https://mbed-tls.readthedocs.io/en/latest/security-advisories/advisories/mbedtls-security-advisory-2022-07.html Exploit, Mitigation, Third Party Advisory