CVE-2017-18187

En ARM mbed TLS, en versiones anteriores a la 2.7.0, hay una omisión de comprobación de límites mediante un desbordamiento de enteros en el análisis de identidad PSK en la función ssl_parse_client_psk_identity() en library/ssl_srv.c.

It was discovered that mbedtls has a bounds-check bypass through an integer overflow that can be used by an attacked to execute arbitrary code or cause a denial of service. It was discovered that mbedtls has a vulnerability where an attacker could execute arbitrary code or cause a denial of service via a crafted certificate chain that is mishandled during RSASSA-PSS signature verification within a TLS or DTLS session. Various other issues were also addressed.