ASB-A-209446496

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Import Source
https://storage.googleapis.com/android-osv/ASB-A-209446496.json
JSON Data
https://api.osv.dev/v1/vulns/ASB-A-209446496
Aliases
  • A-209446496
  • CVE-2021-39807
Published
2022-04-01T00:00:00Z
Modified
2025-11-04T16:30:24.675950Z
Summary
[none]
Details

In handleNfcStateChanged of SecureNfcEnabler.java, there is a possible way to enable NFC from the Guest account due to a missing permission check. This could lead to local escalation of privilege from the Guest account with no additional execution privileges needed. User interaction is not needed for exploitation.

References

Affected packages

Android

platform/packages/apps/Settings

Package

Name
platform/packages/apps/Settings

Affected ranges

Type
ECOSYSTEM
Events
Introduced
10:0
Fixed
10:2022-04-05

Affected versions

Other

10

Ecosystem specific 

{
    "types": [
        "EoP"
    ],
    "severity": "High",
    "spl": "2022-04-05",
    "vanir_signatures": [
        {
            "deprecated": false,
            "source": "https://android.googlesource.com/platform/packages/apps/Settings/+/4e543a38f6037cee6f6237c755d9fdc00270d6e2",
            "digest": {
                "function_hash": "127039390748364425891178181785151239171",
                "length": 82.0
            },
            "target": {
                "function": "SecureNfcEnabler",
                "file": "src/com/android/settings/nfc/SecureNfcEnabler.java"
            },
            "id": "ASB-A-209446496-28f8d628",
            "signature_version": "v1",
            "signature_type": "Function"
        },
        {
            "deprecated": false,
            "source": "https://android.googlesource.com/platform/packages/apps/Settings/+/4e543a38f6037cee6f6237c755d9fdc00270d6e2",
            "digest": {
                "function_hash": "282752491468255757792423787937123980138",
                "length": 262.0
            },
            "signature_version": "v1",
            "id": "ASB-A-209446496-32218f24",
            "match_only_versions": [
                "10"
            ],
            "signature_type": "Function",
            "target": {
                "function": "getNonIndexableKeys",
                "file": "src/com/android/settings/connecteddevice/AdvancedConnectedDeviceDashboardFragment.java"
            }
        },
        {
            "deprecated": false,
            "source": "https://android.googlesource.com/platform/packages/apps/Settings/+/4e543a38f6037cee6f6237c755d9fdc00270d6e2",
            "digest": {
                "line_hashes": [
                    "104640340823179530859982387541045009359",
                    "54077344772517366223645446965945596572",
                    "57316047783306358646712498073955376079"
                ],
                "threshold": 0.9
            },
            "signature_version": "v1",
            "id": "ASB-A-209446496-cd52b39b",
            "match_only_versions": [
                "10"
            ],
            "signature_type": "Line",
            "target": {
                "file": "src/com/android/settings/nfc/SecureNfcPreferenceController.java"
            }
        },
        {
            "deprecated": false,
            "source": "https://android.googlesource.com/platform/packages/apps/Settings/+/4e543a38f6037cee6f6237c755d9fdc00270d6e2",
            "digest": {
                "function_hash": "44364368635206463946580718456940636632",
                "length": 547.0
            },
            "target": {
                "function": "handleNfcStateChanged",
                "file": "src/com/android/settings/nfc/SecureNfcEnabler.java"
            },
            "id": "ASB-A-209446496-d6547adc",
            "signature_version": "v1",
            "signature_type": "Function"
        },
        {
            "deprecated": false,
            "source": "https://android.googlesource.com/platform/packages/apps/Settings/+/4e543a38f6037cee6f6237c755d9fdc00270d6e2",
            "digest": {
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                "threshold": 0.9
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            "signature_version": "v1",
            "id": "ASB-A-209446496-e4f4dba4",
            "match_only_versions": [
                "10"
            ],
            "signature_type": "Line",
            "target": {
                "file": "src/com/android/settings/connecteddevice/AdvancedConnectedDeviceDashboardFragment.java"
            }
        },
        {
            "deprecated": false,
            "source": "https://android.googlesource.com/platform/packages/apps/Settings/+/4e543a38f6037cee6f6237c755d9fdc00270d6e2",
            "digest": {
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                "threshold": 0.9
            },
            "target": {
                "file": "src/com/android/settings/nfc/SecureNfcEnabler.java"
            },
            "id": "ASB-A-209446496-f6b9c654",
            "signature_version": "v1",
            "signature_type": "Line"
        }
    ],
    "fixes": [
        "https://android.googlesource.com/platform/packages/apps/Settings/+/4e543a38f6037cee6f6237c755d9fdc00270d6e2"
    ]
}

platform/packages/apps/Settings

Package

Name
platform/packages/apps/Settings

Affected ranges

Type
ECOSYSTEM
Events
Introduced
11:0
Fixed
11:2022-04-05

Affected versions

Other

11

Ecosystem specific 

{
    "types": [
        "EoP"
    ],
    "severity": "High",
    "spl": "2022-04-05",
    "vanir_signatures": [
        {
            "deprecated": false,
            "source": "https://android.googlesource.com/platform/packages/apps/Settings/+/a579ca7554dcbfd3fce1c90451fb54cb676cfdda",
            "digest": {
                "function_hash": "44364368635206463946580718456940636632",
                "length": 547.0
            },
            "target": {
                "function": "handleNfcStateChanged",
                "file": "src/com/android/settings/nfc/SecureNfcEnabler.java"
            },
            "id": "ASB-A-209446496-9bac3d4d",
            "signature_version": "v1",
            "signature_type": "Function"
        },
        {
            "deprecated": false,
            "source": "https://android.googlesource.com/platform/packages/apps/Settings/+/a579ca7554dcbfd3fce1c90451fb54cb676cfdda",
            "digest": {
                "line_hashes": [
                    "41316701183679083181387877749634756102",
                    "41790578179167789807707609587394117715",
                    "164918464923637698435955425395342737892",
                    "325290779790417954361537207831400346090"
                ],
                "threshold": 0.9
            },
            "target": {
                "file": "src/com/android/settings/connecteddevice/NfcAndPaymentFragment.java"
            },
            "id": "ASB-A-209446496-b6edc127",
            "signature_version": "v1",
            "signature_type": "Line"
        },
        {
            "deprecated": false,
            "source": "https://android.googlesource.com/platform/packages/apps/Settings/+/a579ca7554dcbfd3fce1c90451fb54cb676cfdda",
            "digest": {
                "function_hash": "127039390748364425891178181785151239171",
                "length": 82.0
            },
            "target": {
                "function": "SecureNfcEnabler",
                "file": "src/com/android/settings/nfc/SecureNfcEnabler.java"
            },
            "id": "ASB-A-209446496-bbd864a8",
            "signature_version": "v1",
            "signature_type": "Function"
        },
        {
            "deprecated": false,
            "source": "https://android.googlesource.com/platform/packages/apps/Settings/+/a579ca7554dcbfd3fce1c90451fb54cb676cfdda",
            "digest": {
                "line_hashes": [
                    "24929154912866296258003856795052035698",
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                "threshold": 0.9
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            "target": {
                "file": "src/com/android/settings/nfc/SecureNfcEnabler.java"
            },
            "id": "ASB-A-209446496-f21e1007",
            "signature_version": "v1",
            "signature_type": "Line"
        }
    ],
    "fixes": [
        "https://android.googlesource.com/platform/packages/apps/Settings/+/a579ca7554dcbfd3fce1c90451fb54cb676cfdda"
    ]
}

platform/packages/apps/Settings

Package

Name
platform/packages/apps/Settings

Affected ranges

Type
ECOSYSTEM
Events
Introduced
12:0
Fixed
12:2022-04-05

Affected versions

Other

12

Ecosystem specific 

{
    "types": [
        "EoP"
    ],
    "severity": "High",
    "spl": "2022-04-05",
    "vanir_signatures": [
        {
            "deprecated": false,
            "source": "https://android.googlesource.com/platform/packages/apps/Settings/+/a579ca7554dcbfd3fce1c90451fb54cb676cfdda",
            "digest": {
                "line_hashes": [
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                ],
                "threshold": 0.9
            },
            "target": {
                "file": "src/com/android/settings/nfc/SecureNfcEnabler.java"
            },
            "id": "ASB-A-209446496-21527b53",
            "signature_version": "v1",
            "signature_type": "Line"
        },
        {
            "deprecated": false,
            "source": "https://android.googlesource.com/platform/packages/apps/Settings/+/a579ca7554dcbfd3fce1c90451fb54cb676cfdda",
            "digest": {
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                "length": 547.0
            },
            "target": {
                "function": "handleNfcStateChanged",
                "file": "src/com/android/settings/nfc/SecureNfcEnabler.java"
            },
            "id": "ASB-A-209446496-7e992305",
            "signature_version": "v1",
            "signature_type": "Function"
        },
        {
            "deprecated": false,
            "source": "https://android.googlesource.com/platform/packages/apps/Settings/+/a579ca7554dcbfd3fce1c90451fb54cb676cfdda",
            "digest": {
                "function_hash": "127039390748364425891178181785151239171",
                "length": 82.0
            },
            "target": {
                "function": "SecureNfcEnabler",
                "file": "src/com/android/settings/nfc/SecureNfcEnabler.java"
            },
            "id": "ASB-A-209446496-d1a95ae2",
            "signature_version": "v1",
            "signature_type": "Function"
        },
        {
            "deprecated": false,
            "source": "https://android.googlesource.com/platform/packages/apps/Settings/+/a579ca7554dcbfd3fce1c90451fb54cb676cfdda",
            "digest": {
                "line_hashes": [
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                "threshold": 0.9
            },
            "target": {
                "file": "src/com/android/settings/connecteddevice/NfcAndPaymentFragment.java"
            },
            "id": "ASB-A-209446496-f017e696",
            "signature_version": "v1",
            "signature_type": "Line"
        }
    ],
    "fixes": [
        "https://android.googlesource.com/platform/packages/apps/Settings/+/a579ca7554dcbfd3fce1c90451fb54cb676cfdda"
    ]
}

platform/packages/apps/Settings

Package

Name
platform/packages/apps/Settings

Affected ranges

Type
ECOSYSTEM
Events
Introduced
12L:0
Fixed
12L:2022-04-05

Affected versions

Other

12L

Ecosystem specific 

{
    "types": [
        "EoP"
    ],
    "severity": "High",
    "spl": "2022-04-05",
    "vanir_signatures": [
        {
            "deprecated": false,
            "source": "https://android.googlesource.com/platform/packages/apps/Settings/+/a579ca7554dcbfd3fce1c90451fb54cb676cfdda",
            "digest": {
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                ],
                "threshold": 0.9
            },
            "target": {
                "file": "src/com/android/settings/connecteddevice/NfcAndPaymentFragment.java"
            },
            "id": "ASB-A-209446496-193855f6",
            "signature_version": "v1",
            "signature_type": "Line"
        },
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            "deprecated": false,
            "source": "https://android.googlesource.com/platform/packages/apps/Settings/+/a579ca7554dcbfd3fce1c90451fb54cb676cfdda",
            "digest": {
                "function_hash": "127039390748364425891178181785151239171",
                "length": 82.0
            },
            "target": {
                "function": "SecureNfcEnabler",
                "file": "src/com/android/settings/nfc/SecureNfcEnabler.java"
            },
            "id": "ASB-A-209446496-4f8d7232",
            "signature_version": "v1",
            "signature_type": "Function"
        },
        {
            "deprecated": false,
            "source": "https://android.googlesource.com/platform/packages/apps/Settings/+/a579ca7554dcbfd3fce1c90451fb54cb676cfdda",
            "digest": {
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        {
            "deprecated": false,
            "source": "https://android.googlesource.com/platform/packages/apps/Settings/+/a579ca7554dcbfd3fce1c90451fb54cb676cfdda",
            "digest": {
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                "length": 547.0
            },
            "target": {
                "function": "handleNfcStateChanged",
                "file": "src/com/android/settings/nfc/SecureNfcEnabler.java"
            },
            "id": "ASB-A-209446496-f5e6fb11",
            "signature_version": "v1",
            "signature_type": "Function"
        }
    ],
    "fixes": [
        "https://android.googlesource.com/platform/packages/apps/Settings/+/a579ca7554dcbfd3fce1c90451fb54cb676cfdda"
    ]
}