Product Technology Area
The following issue has been identified and addressed in QTI-authored code:
When secure applications inside Qualcomm Secure Execution Environment (QSEE) receive memory addresses from a high level operating system (HLOS) such as Linux Android, those address have previously been verified as belonging to HLOS memory space rather than QSEE memory space, but they were not verified to be from HLOS user space rather than kernel space. This lack of verification could lead to privilege escalation within the HLOS.
Access Vector: Local
Security Risk: High
Vulnerability: CWE-20 Improper Input Validation
The corresponding HLOS kernel driver needs to implement changes that provide the required memory address information to QSEE, see Insufficient Memory Address Information to prevent Arbitrary Memory Access from QSEE Secure Applications (CVE-2016-5349).
Reported: June 10th, 2016
Confirmed: June 10th, 2016
Patch available and customers notified: December 13th, 2016
Advisory released: March 06th, 2017
Snapdragon 800, 600, 400, 200
Qualcomm Technologies Inc. (QTI) thanks Google’s Android Security Team and Aravind Machiry (UCSB) for reporting this issue and working with QTI to help improve the security of QTI products.