{"id":"PUB-A-251436534","details":"In btm_acl_encrypt_change of btm_acl.cc, there is a possible way for a remote device to turn off encryption without resulting in a terminated connection due to an unusual root cause. This could lead to local information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.","aliases":["A-251436534","CVE-2023-21190"],"modified":"2026-09-24T20:28:40.724672881Z","published":"2023-06-01T00:00:00Z","references":[{"type":"ADVISORY","url":"https://source.android.com/security/bulletin/2023-06-01"}],"affected":[{"package":{"name":"platform/packages/modules/Bluetooth","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"13-next:0"},{"fixed":"13-next:2023-06-01"}]}],"versions":["13-next"],"ecosystem_specific":{"vanir_signatures":[{"source":"https://android.googlesource.com/platform/packages/modules/Bluetooth/+/1ee290b87b23c30d4389c2de283e01f72b2db17a","target":{"file":"system/stack/acl/btm_acl.cc"},"deprecated":false,"digest":{"line_hashes":["241032498162732168686061127771743415680","62624935660486018377174287721292672681","4014527410623786816410966539760505244","57592825137004076501030716370016162946","52690535422915533867537736217217248989","170954045258885978977664806581018799305","183413448801447165731366794327360103872"],"threshold":0.9},"id":"PUB-A-251436534-e875d98a","signature_type":"Line","signature_version":"v1"},{"target":{"file":"system/stack/acl/btm_acl.cc","function":"btm_acl_encrypt_change"},"deprecated":false,"digest":{"function_hash":"277956072962540203230142099701362386203","length":1011},"id":"PUB-A-251436534-f7f60429","signature_type":"Function","signature_version":"v1","source":"https://android.googlesource.com/platform/packages/modules/Bluetooth/+/1ee290b87b23c30d4389c2de283e01f72b2db17a"}],"fixes":["https://android.googlesource.com/platform/packages/modules/Bluetooth/+/1ee290b87b23c30d4389c2de283e01f72b2db17a"],"severity":"Moderate","spl":"2023-06-01","types":["ID"]},"database_specific":{"source":"https://storage.googleapis.com/android-osv/PUB-A-251436534.json"}},{"package":{"name":"platform/packages/modules/Bluetooth","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"13:0"},{"fixed":"13:2023-06-01"}]}],"versions":["13"],"ecosystem_specific":{"types":["ID"],"vanir_signatures":[{"target":{"file":"system/stack/acl/btm_acl.cc","function":"btm_acl_encrypt_change"},"deprecated":false,"digest":{"function_hash":"277956072962540203230142099701362386203","length":1011},"id":"PUB-A-251436534-0ef00832","signature_type":"Function","signature_version":"v1","source":"https://android.googlesource.com/platform/packages/modules/Bluetooth/+/1ee290b87b23c30d4389c2de283e01f72b2db17a"},{"deprecated":false,"digest":{"threshold":0.9,"line_hashes":["241032498162732168686061127771743415680","62624935660486018377174287721292672681","4014527410623786816410966539760505244","57592825137004076501030716370016162946","52690535422915533867537736217217248989","170954045258885978977664806581018799305","183413448801447165731366794327360103872"]},"id":"PUB-A-251436534-56df625f","signature_type":"Line","signature_version":"v1","source":"https://android.googlesource.com/platform/packages/modules/Bluetooth/+/1ee290b87b23c30d4389c2de283e01f72b2db17a","target":{"file":"system/stack/acl/btm_acl.cc"}}],"fixes":["https://android.googlesource.com/platform/packages/modules/Bluetooth/+/1ee290b87b23c30d4389c2de283e01f72b2db17a"],"severity":"Moderate","spl":"2023-06-01"},"database_specific":{"source":"https://storage.googleapis.com/android-osv/PUB-A-251436534.json"}}],"schema_version":"1.9.0"}