CVE-2021-0388 : Security Advisory and Response
Learn about CVE-2021-0388, a vulnerability in Android-11 allowing privilege escalation by misattributing video call data. Find out impact, affected systems, and mitigation steps.
A vulnerability in the Android operating system has been identified with CVE-2021-0388, impacting devices running Android-11. This vulnerability, classified as an 'Elevation of privilege', could potentially lead to local escalation of privilege by attributing video call data incorrectly.
Understanding CVE-2021-0388
This section will delve into the details of the CVE-2021-0388 vulnerability and its implications.
What is CVE-2021-0388?
The vulnerability in the Android operating system, specifically in the ImsPhoneCallTracker.java file, allows for a misattribution of data usage, potentially resulting in local privilege escalation. This could lead to video call data being incorrectly attributed to the wrong app without requiring additional execution privileges.
The Impact of CVE-2021-0388
If exploited, CVE-2021-0388 could allow an attacker to elevate their privileges locally without the need for user interaction. This could result in data misuse and potentially compromise the integrity of video call data.
Technical Details of CVE-2021-0388
In this section, we will explore the technical aspects of the CVE-2021-0388 vulnerability.
Vulnerability Description
The vulnerability stems from an incorrect broadcast handler in the ImsPhoneCallTracker.java file, leading to misattribution of data usage, particularly in video calls.
Affected Systems and Versions
The vulnerability affects devices running Android-11, specifically impacting the handling of data usage in relation to video calls.
Exploitation Mechanism
Exploiting this vulnerability does not require user interaction. By manipulating the data usage attribution, an attacker could escalate their privileges locally.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-0388, users and organizations can take the following steps:
Immediate Steps to Take
- Regularly check for security updates and patches provided by Android.
- Implement network segmentation to limit the impact of potential privilege escalation.
Long-Term Security Practices
- Stay informed about security best practices and emerging threats in the Android ecosystem.
- Employ proper access control mechanisms to restrict unauthorized data attribution.
Patching and Updates
Ensure that devices running Android-11 are updated with the latest security patches from Android to address CVE-2021-0388.