CVE-2023-38297
Published: 22 April 2024
Summary
CVE-2023-38297 is a high-severity Improper Access Control (CWE-284) vulnerability in Defcon (inferred from references). Its CVSS base score is 8.4 (High).
Operationally, ranked at the 23.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-42116
Vulnerability details
An issue was discovered in a third-party com.factory.mmigroup component, shipped on devices from multiple device manufacturers. Certain software builds for various Android devices contain a vulnerable pre-installed app with a package name of com.factory.mmigroup (versionCode='3', versionName='2.1) that allows local third-party…
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apps to perform various actions, due to inadequate access control, in its context (system user), but the functionalities exposed depend on the specific device. The following capabilities are exposed to zero-permission, third-party apps on the following devices: arbitrary AT command execution via AT command injection (T-Mobile Revvl 6 Pro 5G, T-Mobile Revvl V+ 5G, and Boost Mobile Celero 5G); programmatic factory reset (Samsung Galaxy A03S, T-Mobile Revvl 6 Pro 5G, T-Mobile Revvl V+ 5G, Boost Mobile Celero, Realme C25Y, and Lenovo Tab M8 HD), leaking IMEI (Samsung Galaxy A03S, T-Mobile Revvl 6 Pro 5G, T-Mobile Revvl V+ 5G, Boost Mobile Celero, and Realme C25Y); leaking serial number (Samsung Galaxy A03s, T-Mobile Revvl 6 Pro 5G, T-Mobile Revvl V+ 5G, Boost Mobile Celero, Realme C25Y, and Lenovo Tab M8 HD); powering off the device (Realme C25Y, Samsung Galaxy A03S, and T-Mobile Revvl 6 Pro 5G); and programmatically enabling/disabling airplane mode (Samsung Galaxy A03S, T-Mobile Revvl 6 Pro 5G, T-Mobile Revvl V+ 5G, Boost Mobile Celero, and Realme C25Y); and enabling Wi-Fi, Bluetooth, and GPS (Samsung Galaxy A03S, T-Mobile Revvl 6 Pro 5G, T-Mobile Revvl V+ 5G, Boost Mobile Celero, and Realme C25Y). No permissions or special privileges are necessary to exploit the vulnerabilities in the com.factory.mmigroup app. No user interaction is required beyond installing and running a third-party app. The software build fingerprints for each confirmed vulnerable device are as follows: Boost Mobile Celero 5G (Celero5G/Jupiter/Jupiter:11/RP1A.200720.011/SW_S98119AA1_V067:user/release-keys, Celero5G/Jupiter/Jupiter:11/RP1A.200720.011/SW_S98119AA1_V064:user/release-keys, Celero5G/Jupiter/Jupiter:11/RP1A.200720.011/SW_S98119AA1_V061:user/release-keys, and Celero5G/Jupiter/Jupiter:11/RP1A.200720.011/SW_S98119AA1_V052:user/release-keys); Samsung Galaxy A03S (samsung/a03sutfn/a03su:13/TP1A.220624.014/S134DLUDU6CWB6:user/release-keys and samsung/a03sutfn/a03su:12/SP1A.210812.016/S134DLUDS5BWA1:user/release-keys); Lenovo Tab M8 HD (Lenovo/LenovoTB-8505F/8505F:10/QP1A.190711.020/S300637_220706_BMP:user/release-keys and Lenovo/LenovoTB-8505F/8505F:10/QP1A.190711.020/S300448_220114_BMP:user/release-keys); T-Mobile Revvl 6 Pro 5G (T-Mobile/Augusta/Augusta:12/SP1A.210812.016/SW_S98121AA1_V070:user/release-keys and T-Mobile/Augusta/Augusta:12/SP1A.210812.016/SW_S98121AA1_V066:user/release-keys); T-Mobile Revvl V+ 5G (T-Mobile/Sprout/Sprout:11/RP1A.200720.011/SW_S98115AA1_V077:user/release-keys and T-Mobile/Sprout/Sprout:11/RP1A.200720.011/SW_S98115AA1_V060:user/release-keys); and Realme C25Y (realme/RMX3269/RED8F6:11/RP1A.201005.001/1675861640000:user/release-keys, realme/RMX3269/RED8F6:11/RP1A.201005.001/1664031768000:user/release-keys, realme/RMX3269/RED8F6:11/RP1A.201005.001/1652814687000:user/release-keys, and realme/RMX3269/RED8F6:11/RP1A.201005.001/1635785712000:user/release-keys). This malicious app sends a broadcast Intent to com.factory.mmigroup/.MMIGroupReceiver. This causes the com.factory.mmigroup app to dynamically register for various action strings. The malicious app can then send these strings, allowing it to perform various behaviors that the com.factory.mmigroup app exposes. The actual behaviors exposed by the com.factory.mmigroup app depend on device model and chipset. The com.factory.mmigroup app executes as the "system" user, allowing it to interact with the baseband processor and perform various other sensitive actions.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
The access control policy and procedures directly mandate and enforce proper access control mechanisms across the organization.
Device lock enforces restricted access until re-authentication, directly reducing unauthorized use of active sessions.
Supervision and review of access control activities directly detects and remediates improper access configurations or usages.
Explicitly identifying and documenting actions permitted without identification or authentication enforces proper access control boundaries by defining justified exceptions.
By automatically labeling outputs with security attributes, the control supports attribute-based enforcement and reduces exploitability of improper access control weaknesses.
Associating and retaining security attributes with data directly supports enforcement of access control decisions across storage, processing, and transmission.
Requiring prior authorization for each remote access type prevents improper access control over remote connections.
Requiring authorization of wireless access before allowing connections enforces proper access control for this access method.