{"id":"ASB-A-246932269","details":"In phNciNfc_MfCreateXchgDataHdr of phNxpExtns_MifareStd.cpp, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.","aliases":["A-246932269","CVE-2023-20945"],"modified":"2026-04-29T15:10:00.007170Z","published":"2023-02-01T00:00:00Z","references":[{"type":"ADVISORY","url":"https://source.android.com/security/bulletin/2023-02-01"},{"type":"FIX","url":"https://android.googlesource.com/platform/packages/apps/Nfc/+/4a964908ff0bd91d93f96cdc26f7377420c58273"}],"affected":[{"package":{"name":"platform/packages/apps/Nfc","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10:0"},{"fixed":"10:2023-02-01"}]}],"versions":["10"],"ecosystem_specific":{"severity":"High","fixes":["https://android.googlesource.com/platform/packages/apps/Nfc/+/2e4dfa6c92de30907851914add6485f8b7920968"],"vanir_signatures":[{"signature_version":"v1","source":"https://android.googlesource.com/platform/packages/apps/Nfc/+/2e4dfa6c92de30907851914add6485f8b7920968","target":{"function":"phNciNfc_MfCreateXchgDataHdr","file":"nci/jni/extns/pn54x/src/mifare/phNxpExtns_MifareStd.cpp"},"match_only_versions":["10"],"id":"ASB-A-246932269-cf4ba7bf","deprecated":false,"signature_type":"Function","digest":{"function_hash":"291295663468966505317516086465492132836","length":359}},{"signature_version":"v1","source":"https://android.googlesource.com/platform/packages/apps/Nfc/+/2e4dfa6c92de30907851914add6485f8b7920968","target":{"file":"nci/jni/extns/pn54x/src/mifare/phNxpExtns_MifareStd.cpp"},"match_only_versions":["10"],"id":"ASB-A-246932269-ea39f7cc","deprecated":false,"signature_type":"Line","digest":{"threshold":0.9,"line_hashes":["331621049285636605087812950969410737608","85262197089860247853335490100764795172","261718335795557197149375020778461234828"]}}],"spl":"2023-02-01","types":["EoP"]},"database_specific":{"source":"https://storage.googleapis.com/android-osv/ASB-A-246932269.json"}}],"schema_version":"1.7.5"}