** DISPUTED ** Mozilla Network Security Services (NSS) 3.x with certain settings of the SSL_ENABLE_RENEGOTIATION option does not properly restrict client-initiated renegotiation within the SSL and TLS protocols which might make it easier for remote attackers to cause a denial of service (CPU consumption) by performing many renegotiations within a single connection a different vulnerability than CVE-2011-1473. NOTE: it can also be argued that it is the responsibility of server deployments not a security library to prevent or limit renegotiation when it is inappropriate within a specific environment.