PT-2021-13423 · Google · Android

Published 2021-12-15 · Updated 2021-12-17 · CVE-2021-1018

Positive Technologies (AI Summary)

CVSS v3.1

3.3

Low

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions Android versions prior to the fixed version

Description The issue is related to a side channel information disclosure in the adjustStreamVolume function of AudioService.java. This could allow an attacker to determine whether an app is installed without requiring query permissions, potentially leading to local information disclosure. No additional execution privileges are needed, and user interaction is not required for exploitation.

Recommendations For Android versions prior to the fixed version, consider restricting access to sensitive information until a patch is available. As a temporary workaround, review and limit the use of the adjustStreamVolume function in AudioService.java to minimize the risk of exploitation.

Fix

Side Channel Attack

Weakness Enumeration

CWE-203

Related Identifiers

CVE-2021-1018

Affected Products

Android

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2021-1018 · Security Note
• https://osv.dev/vulnerability/CVE-2021-1018 · Vendor Advisory
• https://source.android.com/security/bulletin/pixel/2021-12-01 · Vendor Advisory