NFC: Fix 0 block write possibility in Mifare Classic emulation (#2474)

Co-authored-by: あく <alleteam@gmail.com>
2023-03-09 20:50:25 +03:00 · 2023-03-09 20:50:25 +03:00 · 0190a161ba
commit 0190a161ba
parent 5b05aeea82
1 changed files with 4 additions and 0 deletions
--- a/lib/nfc/protocols/mifare_classic.c
+++ b/lib/nfc/protocols/mifare_classic.c
@ -291,6 +291,10 @@ bool mf_classic_is_allowed_access_data_block(
    uint8_t* sector_trailer =
        data->block[mf_classic_get_sector_trailer_num_by_block(block_num)].value;

+    if(block_num == 0 && action == MfClassicActionDataWrite) {
+        return false;
+    }
+
    uint8_t sector_block;
    if(block_num <= 128) {
        sector_block = block_num & 0x03;