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SUNRPC: Remove RPCSEC_GSS_KRB5_ENCTYPES_DES

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Make it impossible to enable support for the DES or DES3 Kerberos
encryption types in SunRPC. These enctypes were deprecated by RFCs
6649 and 8429 because they are known to be insecure.

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2023-06-29 13:50:39 -04:00
parent 1d3dd1d56c
commit 788849b64d
2 changed files with 0 additions and 29 deletions
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1
net/sunrpc/.kunitconfig
View File

@ -23,7 +23,6 @@ CONFIG_NFS_FS=y
CONFIG_SUNRPC=y
CONFIG_SUNRPC_GSS=y
CONFIG_RPCSEC_GSS_KRB5=y
CONFIG_RPCSEC_GSS_KRB5_ENCTYPES_DES=y
CONFIG_RPCSEC_GSS_KRB5_ENCTYPES_AES_SHA1=y
CONFIG_RPCSEC_GSS_KRB5_ENCTYPES_CAMELLIA=y
CONFIG_RPCSEC_GSS_KRB5_ENCTYPES_AES_SHA2=y

28
net/sunrpc/Kconfig
View File

@ -34,38 +34,10 @@ config RPCSEC_GSS_KRB5
If unsure, say Y.
config RPCSEC_GSS_KRB5_SIMPLIFIED
bool
depends on RPCSEC_GSS_KRB5
config RPCSEC_GSS_KRB5_CRYPTOSYSTEM
bool
depends on RPCSEC_GSS_KRB5
config RPCSEC_GSS_KRB5_ENCTYPES_DES
bool "Enable Kerberos enctypes based on DES (deprecated)"
depends on RPCSEC_GSS_KRB5
depends on CRYPTO_CBC && CRYPTO_CTS && CRYPTO_ECB
depends on CRYPTO_HMAC && CRYPTO_MD5 && CRYPTO_SHA1
depends on CRYPTO_DES
default n
select RPCSEC_GSS_KRB5_SIMPLIFIED
help
Choose Y to enable the use of deprecated Kerberos 5
encryption types that utilize Data Encryption Standard
(DES) based ciphers. These include des-cbc-md5,
des-cbc-crc, and des-cbc-md4, which were deprecated by
RFC 6649, and des3-cbc-sha1, which was deprecated by RFC
8429.
These encryption types are known to be insecure, therefore
the default setting of this option is N. Support for these
encryption types is available only for compatibility with
legacy NFS client and server implementations.
Removal of support is planned for a subsequent kernel
release.
config RPCSEC_GSS_KRB5_ENCTYPES_AES_SHA1
bool "Enable Kerberos enctypes based on AES and SHA-1"
depends on RPCSEC_GSS_KRB5