diff options
Diffstat (limited to 'net/sunrpc')
| -rw-r--r-- | net/sunrpc/Kconfig | 16 | ||||
| -rw-r--r-- | net/sunrpc/auth_gss/gss_krb5_mech.c | 2 |
2 files changed, 18 insertions, 0 deletions
diff --git a/net/sunrpc/Kconfig b/net/sunrpc/Kconfig index ac09ca803296..83f5617bae07 100644 --- a/net/sunrpc/Kconfig +++ b/net/sunrpc/Kconfig @@ -34,6 +34,22 @@ config RPCSEC_GSS_KRB5 If unsure, say Y. +config CONFIG_SUNRPC_DISABLE_INSECURE_ENCTYPES + bool "Secure RPC: Disable insecure Kerberos encryption types" + depends on RPCSEC_GSS_KRB5 + default n + help + Choose Y here to disable the use of deprecated encryption types + with the Kerberos version 5 GSS-API mechanism (RFC 1964). The + deprecated encryption types include DES-CBC-MD5, DES-CBC-CRC, + and DES-CBC-MD4. These types were deprecated by RFC 6649 because + they were found to be insecure. + + N is the default because many sites have deployed KDCs and + keytabs that contain only these deprecated encryption types. + Choosing Y prevents the use of known-insecure encryption types + but might result in compatibility problems. + config SUNRPC_DEBUG bool "RPC: Enable dprintk debugging" depends on SUNRPC && SYSCTL diff --git a/net/sunrpc/auth_gss/gss_krb5_mech.c b/net/sunrpc/auth_gss/gss_krb5_mech.c index eab71fc7af3e..be31a58d54e0 100644 --- a/net/sunrpc/auth_gss/gss_krb5_mech.c +++ b/net/sunrpc/auth_gss/gss_krb5_mech.c @@ -53,6 +53,7 @@ static struct gss_api_mech gss_kerberos_mech; /* forward declaration */ static const struct gss_krb5_enctype supported_gss_krb5_enctypes[] = { +#ifndef CONFIG_SUNRPC_DISABLE_INSECURE_ENCTYPES /* * DES (All DES enctypes are mapped to the same gss functionality) */ @@ -74,6 +75,7 @@ static const struct gss_krb5_enctype supported_gss_krb5_enctypes[] = { .cksumlength = 8, .keyed_cksum = 0, }, +#endif /* CONFIG_SUNRPC_DISABLE_INSECURE_ENCTYPES */ /* * RC4-HMAC */ |