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add some len check

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merlokk 2019-01-27 00:01:04 +02:00
parent 2feef8b043
commit 1857482617
1 changed files with 7 additions and 0 deletions
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7
targets/stm32l432/src/nfc.c
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@ -352,6 +352,13 @@ void nfc_process_iblock(uint8_t * buf, int len)
case APDU_FIDO_U2F_AUTHENTICATE:
printf1(TAG_NFC, "U2F Authenticate command.\r\n");
if (plen != 1 + 64 + 1 + buf[65])
{
printf1(TAG_NFC, "U2F Authenticate request length error. len=%d keyhlen=%d.\r\n", plen, buf[65]);
nfc_write_response(buf[0], SW_WRONG_LENGTH);
return;
}
nfc_write_response(buf[0], SW_COND_USE_NOT_SATISFIED);
break;