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

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Co-authored-by: あく <alleteam@gmail.com>
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AloneLiberty 2023-03-09 20:50:25 +03:00 committed by GitHub
parent 5b05aeea82
commit 0190a161ba
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1 changed files with 4 additions and 0 deletions
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4
lib/nfc/protocols/mifare_classic.c
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@ -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;