CVE-2021-0459 : Exploit Details and Defense Strategies
Learn about CVE-2021-0459, an Android kernel vulnerability allowing out-of-bounds reads, potentially leading to local information disclosure. Explore impact, affected systems, and mitigation steps.
Android's fts_driver_test_write function in fts_proc.c is vulnerable to an out-of-bounds read due to a missing check, potentially leading to local information disclosure. This CVE requires system execution privileges but no user interaction for exploitation.
Understanding CVE-2021-0459
This CVE pertains to an information disclosure vulnerability in the Android kernel.
What is CVE-2021-0459?
In fts_driver_test_write of fts_proc.c, a missing bounds check could result in an out-of-bounds read, allowing for local information disclosure without user interaction.
The Impact of CVE-2021-0459
The vulnerability could be exploited to disclose sensitive information locally with system execution privileges, posing a risk to data confidentiality.
Technical Details of CVE-2021-0459
This section covers the specific technical aspects of the vulnerability.
Vulnerability Description
The issue arises in the fts_driver_test_write function in fts_proc.c due to a lack of proper bounds checking, enabling an out-of-bounds read.
Affected Systems and Versions
The affected product is Android with the specific vulnerable component being the Android kernel.
Exploitation Mechanism
Exploiting this vulnerability requires system execution privileges but can be achieved without any user interaction.
Mitigation and Prevention
Discover the steps to mitigate and prevent exploitation of CVE-2021-0459.
Immediate Steps to Take
Prompt actions to enhance security postures against this vulnerability.
Long-Term Security Practices
Implement long-term security practices to safeguard against similar vulnerabilities in the future.
Patching and Updates
Ensure that systems are promptly patched and updated to address CVE-2021-0459.