CVE-2021-1003 : Security Advisory and Response
Discover how CVE-2021-1003 impacts Android-12 by allowing unprivileged apps to manipulate audio settings, leading to local privilege escalation without additional permissions.
A vulnerability has been identified in Android-12 that allows an unprivileged app to change audio stream volume, leading to a local escalation of privilege without requiring additional execution privileges.
Understanding CVE-2021-1003
This CVE identifies a flaw in adjustStreamVolume of AudioService.java that can be exploited by malicious apps to manipulate audio settings.
What is CVE-2021-1003?
The CVE-2021-1003 vulnerability in Android-12 enables unprivileged apps to adjust audio stream volume, potentially leading to a local privilege escalation without the need for additional execution privileges.
The Impact of CVE-2021-1003
If exploited, this vulnerability could allow malicious apps to gain elevated privileges on the device, compromising user data and system integrity.
Technical Details of CVE-2021-1003
This section outlines the specifics of the vulnerability.
Vulnerability Description
The flaw in adjustStreamVolume of AudioService.java enables unprivileged apps to modify audio stream volume, leading to a local escalation of privilege.
Affected Systems and Versions
The vulnerability affects Android-12, exposing devices running this version to the risk of exploitation.
Exploitation Mechanism
Malicious apps can abuse the confused deputy issue in adjustStreamVolume to change audio settings without proper authorization.
Mitigation and Prevention
To address CVE-2021-1003, users and administrators should take immediate actions and implement long-term security measures.
Immediate Steps to Take
Users should be cautious when granting audio-related permissions to apps and promptly update their devices with security patches.
Long-Term Security Practices
Maintaining up-to-date systems, avoiding untrusted apps, and practicing least privilege access can help prevent such vulnerabilities.
Patching and Updates
Regularly checking for and applying security updates provided by the device manufacturer is crucial in mitigating the risks associated with CVE-2021-1003.