blob: 1c25f395275e73c2d5eb16c1f368d562896bd0c2 [file] [log] [blame]
Security
* Fix a buffer overread in DTLS ClientHello parsing in servers with
MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE enabled. An unauthenticated client
or a man-in-the-middle could cause a DTLS server to read up to 255 bytes
after the end of the SSL input buffer. The buffer overread only happens
when MBEDTLS_SSL_IN_CONTENT_LEN is less than a threshold that depends on
the exact configuration: 258 bytes if using mbedtls_ssl_cookie_check(),
and possibly up to 571 bytes with a custom cookie check function.
Reported by the Cybeats PSI Team.