CVE-2023-38291: Permission Flaw (CVSS 7.1)

Description

An issue was discovered in a third-party component related to ro.boot.wifimacaddr, shipped on devices from multiple device manufacturers. Various software builds for the following TCL devices (30Z and 10L) and Motorola devices (Moto G Pure and Moto G Power) leak the Wi-Fi MAC address to a system property that can be accessed by any local app on the device without any permissions or special privileges. Google restricted third-party apps from directly obtaining non-resettable device identifiers in Android 10 and higher, but in these instances they are leaked by a high-privilege process and can be obtained indirectly. The software build fingerprints for each confirmed vulnerable device are as follows: TCL A3X (TCL/A600DL/Delhi_TF:11/RKQ1.201202.002/vAAZ:user/release-keys, TCL/A600DL/Delhi_TF:11/RKQ1.201202.002/vAB3:user/release-keys, TCL/A600DL/Delhi_TF:11/RKQ1.201202.002/vAB7:user/release-keys, TCL/A600DL/Delhi_TF:11/RKQ1.201202.002/vABA:user/release-keys, TCL/A600DL/Delhi_TF:11/RKQ1.201202.002/vABM:user/release-keys, TCL/A600DL/Delhi_TF:11/RKQ1.201202.002/vABP:user/release-keys, and TCL/A600DL/Delhi_TF:11/RKQ1.201202.002/vABS:user/release-keys); TCL 10L (TCL/T770B/T1_LITE:10/QKQ1.200329.002/3CJ0:user/release-keys and TCL/T770B/T1_LITE:11/RKQ1.210107.001/8BIC:user/release-keys); Motorola Moto G Pure (motorola/ellis_trac/ellis:11/RRHS31.Q3-46-110-2/74844:user/release-keys, motorola/ellis_trac/ellis:11/RRHS31.Q3-46-110-7/5cde8:user/release-keys, motorola/ellis_trac/ellis:11/RRHS31.Q3-46-110-10/d67faa:user/release-keys, motorola/ellis_trac/ellis:11/RRHS31.Q3-46-110-13/b4a29:user/release-keys, motorola/ellis_trac/ellis:12/S3RH32.20-42-10/1c2540:user/release-keys, motorola/ellis_trac/ellis:12/S3RHS32.20-42-13-2-1/6368dd:user/release-keys, motorola/ellis_a/ellis:11/RRH31.Q3-46-50-2/20fec:user/release-keys, motorola/ellis_vzw/ellis:11/RRH31.Q3-46-138/103bd:user/release-keys, motorola/ellis_vzw/ellis:11/RRHS31.Q3-46-138-2/e5502:user/release-keys, and motorola/ellis_vzw/ellis:12/S3RHS32.20-42-10-14-2/5e0b0:user/release-keys); and Motorola Moto G Power (motorola/tonga_g/tonga:11/RRQ31.Q3-68-16-2/e5877:user/release-keys and motorola/tonga_g/tonga:12/S3RQS32.20-42-10-6/f876d3:user/release-keys). This malicious app reads from the "ro.boot.wifimacaddr" system property to indirectly obtain the Wi-Fi MAC address.

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CVSS v3.1 Score

7.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Weakness Type (CWE)

CWE-276 Incorrect Default Permissions

References

Other References

https://media.defcon.org/DEF%20CON%2031/DEF%20CON%2031%20presentations/Ryan%20Johnson%20Mohamed%20Elsabagh%20Angelos%20Stavrou%20-%20Still%20Vulnerable%20Out%20of%20the%20Box%20Revisiting%20the%20Security%20of%20Prepaid%20Android%20Carrier%20Devices.pdf https://media.defcon.org/DEF%20CON%2031/DEF%20CON%2031%20presentations/Ryan%20Johnson%20Mohamed%20Elsabagh%20Angelos%20Stavrou%20-%20Still%20Vulnerable%20Out%20of%20the%20Box%20Revisiting%20the%20Security%20of%20Prepaid%20Android%20Carrier%20Devices.pdf

Frequently Asked Questions

What is CVE-2023-38291? +

An issue was discovered in a third-party component related to ro.boot.wifimacaddr, shipped on devices from multiple device manufacturers. Various software builds for the following TCL devices (30Z and 10L) and Motorola devices (Moto G Pure and Moto G Power) leak the Wi-Fi MAC address to a system property that can be accessed by any local app on the device without any permissions or special privileges. Google restricted third-party apps from directly obtaining non-resettable device identifiers in Android 10 and higher, but in these instances they are leaked by a high-privilege process and can be obtained indirectly. The software build fingerprints for each confirmed vulnerable device are as follows: TCL A3X (TCL/A600DL/Delhi_TF:11/RKQ1.201202.002/vAAZ:user/release-keys, TCL/A600DL/Delhi_TF:11/RKQ1.201202.002/vAB3:user/release-keys, TCL/A600DL/Delhi_TF:11/RKQ1.201202.002/vAB7:user/release-keys, TCL/A600DL/Delhi_TF:11/RKQ1.201202.002/vABA:user/release-keys, TCL/A600DL/Delhi_TF:11/RKQ1.201202.002/vABM:user/release-keys, TCL/A600DL/Delhi_TF:11/RKQ1.201202.002/vABP:user/release-keys, and TCL/A600DL/Delhi_TF:11/RKQ1.201202.002/vABS:user/release-keys); TCL 10L (TCL/T770B/T1_LITE:10/QKQ1.200329.002/3CJ0:user/release-keys and TCL/T770B/T1_LITE:11/RKQ1.210107.001/8BIC:user/release-keys); Motorola Moto G Pure (motorola/ellis_trac/ellis:11/RRHS31.Q3-46-110-2/74844:user/release-keys, motorola/ellis_trac/ellis:11/RRHS31.Q3-46-110-7/5cde8:user/release-keys, motorola/ellis_trac/ellis:11/RRHS31.Q3-46-110-10/d67faa:user/release-keys, motorola/ellis_trac/ellis:11/RRHS31.Q3-46-110-13/b4a29:user/release-keys, motorola/ellis_trac/ellis:12/S3RH32.20-42-10/1c2540:user/release-keys, motorola/ellis_trac/ellis:12/S3RHS32.20-42-13-2-1/6368dd:user/release-keys, motorola/ellis_a/ellis:11/RRH31.Q3-46-50-2/20fec:user/release-keys, motorola/ellis_vzw/ellis:11/RRH31.Q3-46-138/103bd:user/release-keys, motorola/ellis_vzw/ellis:11/RRHS31.Q3-46-138-2/e5502:user/release-keys, and motorola/ellis_vzw/ellis:12/S3RHS32.20-42-10-14-2/5e0b0:user/release-keys); and Motorola Moto G Power (motorola/tonga_g/tonga:11/RRQ31.Q3-68-16-2/e5877:user/release-keys and motorola/tonga_g/tonga:12/S3RQS32.20-42-10-6/f876d3:user/release-keys). This malicious app reads from the "ro.boot.wifimacaddr" system property to indirectly obtain the Wi-Fi MAC address. It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2023-38291? +

CVE-2023-38291 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2023-38291? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2023-38291