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psa_cipher_decrypt CCM*: fix rejection of messages shorter than 3 bytes

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Credit to Cryptofuzz. Fixes #9314.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine
2024-06-26 13:16:33 +02:00
parent 71b58180cd
commit b47c3b3111
3 changed files with 23 additions and 8 deletions
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6
library/psa_crypto.c
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@ -4631,11 +4631,7 @@ psa_status_t psa_cipher_decrypt(mbedtls_svc_key_id_t key,
goto exit;
}
if (alg == PSA_ALG_CCM_STAR_NO_TAG &&
input_length < PSA_BLOCK_CIPHER_BLOCK_LENGTH(slot->attr.type)) {
status = PSA_ERROR_INVALID_ARGUMENT;
goto exit;
} else if (input_length < PSA_CIPHER_IV_LENGTH(slot->attr.type, alg)) {
if (input_length < PSA_CIPHER_IV_LENGTH(slot->attr.type, alg)) {
status = PSA_ERROR_INVALID_ARGUMENT;
goto exit;
}