SB2020010826 - Time-of-check Time-of-use (TOCTOU) Race Condition in Google, Google Android
Published: January 8, 2020 Updated: August 8, 2020
Security Bulletin ID
SB2020010826
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-ID: CVE-2020-0003)
The vulnerability allows a local authenticated user to execute arbitrary code.
In onCreate of InstallStart.java, there is a possible package validation bypass due to a time-of-check time-of-use vulnerability. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation. Product: Android Versions: Android-8.0 Android ID: A-140195904
Remediation
Install update from vendor's website.