SB2020010826 - Time-of-check Time-of-use (TOCTOU) Race Condition in Google, Google Android

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Main Vulnerability Database SB2020010826

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
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-ID: CVE-2020-0003)

CWE-ID: CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


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.

References