In Snapdragon (Automobile, Mobile, Wear) in version MSM8909W, MSM8996AU, SD 210/SD 212/SD 205, SD 430, SD 450, SD 615/16/SD 415, SD 617, SD 625, SD 650/52, SD 810, SD 820, SD 820A, SD 835, SD 845, SDA660, the com.qualcomm.embms is a vendor package deployed in the system image which has an inadequate permission level and allows any application installed from Play Store to request this permission at install-time. The system application interfaces with the Radio Interface Layer leading to potential access control issue.
Weakness
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.
Affected Software
Name |
Vendor |
Start Version |
End Version |
Msm8909w_firmware |
Qualcomm |
- (including) |
- (including) |
Potential Mitigations
- Run the code in a “jail” or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which files can be accessed in a particular directory or which commands can be executed by the software.
- OS-level examples include the Unix chroot jail, AppArmor, and SELinux. In general, managed code may provide some protection. For example, java.io.FilePermission in the Java SecurityManager allows the software to specify restrictions on file operations.
- This may not be a feasible solution, and it only limits the impact to the operating system; the rest of the application may still be subject to compromise.
- Be careful to avoid CWE-243 and other weaknesses related to jails.
References