SB2019021231 - Race condition in Google, Google Android

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2018-9586)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/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 run of InstallPackageTask.java in Android-7.0, Android-7.1.1, Android-7.1.2, Android-8.0, Android-8.1 and Android-9, it is possible that package verification is turned off and remains off due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Android ID: A-116754444.

Remediation

Install update from vendor's website.

References

• http://www.securityfocus.com/bid/106495
• https://source.android.com/security/bulletin/2019-01-01.html