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don't allow DSA keys

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Signed-off-by: Nicola Murino <nicola.murino@gmail.com>
This commit is contained in:
Nicola Murino
2024-12-18 19:01:15 +01:00
parent 8c5f92aeb1
commit bfe6c58133
4 changed files with 13 additions and 3 deletions
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9
internal/dataprovider/dataprovider.go
View File

@@ -2907,11 +2907,18 @@ func validatePublicKeys(user *User) error {
util.I18nErrorPubKeyInvalid,
)
}
if out.Type() == ssh.InsecureKeyAlgoDSA {
providerLog(logger.LevelError, "dsa public key not accepted, position: %d", idx)
return util.NewI18nError(
util.NewValidationError(fmt.Sprintf("DSA key format is insecure and it is not allowed for key at position %d", idx)),
util.I18nErrorKeyInsecure,
)
}
if k, ok := out.(ssh.CryptoPublicKey); ok {
cryptoKey := k.CryptoPublicKey()
if rsaKey, ok := cryptoKey.(*rsa.PublicKey); ok {
if size := rsaKey.N.BitLen(); size < 2048 {
providerLog(logger.LevelError, "rsa key with size %d not accepted, minimum 2048", size)
providerLog(logger.LevelError, "rsa key with size %d at position %d not accepted, minimum 2048", size, idx)
return util.NewI18nError(
util.NewValidationError(fmt.Sprintf("invalid size %d for rsa key at position %d, minimum 2048",
size, idx)),

1
internal/util/i18n.go
View File

@@ -121,6 +121,7 @@ const (
I18nErrorPubKeyInvalid = "user.pub_key_invalid"
I18nErrorPrivKeyInvalid = "user.priv_key_invalid"
I18nErrorKeySizeInvalid = "user.key_invalid_size"
I18nErrorKeyInsecure = "user.key_insecure"
I18nErrorPrimaryGroup = "user.err_primary_group"
I18nErrorDuplicateGroup = "user.err_duplicate_group"
I18nErrorNoPermission = "user.no_permissions"

3
static/locales/en/translation.json
View File

@@ -501,7 +501,8 @@
"home_invalid": "The home directory must be an absolute path",
"pub_key_invalid": "Invalid public key",
"priv_key_invalid": "Invalid private key",
"key_invalid_size": "Invalid RSA key: the minimum supported size is 2048",
"key_invalid_size": "Invalid RSA public key: the minimum supported size is 2048",
"key_insecure": "Insecure public key format not allowed",
"err_primary_group": "Only one primary group is allowed",
"err_duplicate_group": "Duplicate groups detected",
"no_permissions": "Directories permissions are mandatory",

3
static/locales/it/translation.json
View File

@@ -501,7 +501,8 @@
"home_invalid": "La directory principale deve essere un path assoluto",
"pub_key_invalid": "Chiave pubblica non valida",
"priv_key_invalid": "Chiave privata non valida",
"key_invalid_size": "Chiave RSA non valida: la dimensione minima supportata è 2048",
"key_invalid_size": "Chiave pubblica RSA non valida: la dimensione minima supportata è 2048",
"key_insecure": "Formato chiave pubblica non sicuro non consentito",
"err_primary_group": "È consentito un solo gruppo primario",
"err_duplicate_group": "Rilevati gruppi duplicati",
"no_permissions": "I permessi per le directory sono obbligatori",