CVE-2021-0427 : Vulnerability Insights and Analysis
Learn about CVE-2021-0427, a critical Android-11 vulnerability allowing local attackers to exploit a heap buffer overflow for privilege escalation without user interaction.
A heap buffer overflow vulnerability with ID CVE-2021-0427 in parseExclusiveStateAnnotation of LogEvent.cpp in Android-11 could allow a local attacker to perform an out-of-bounds write, leading to privilege escalation without requiring additional privileges. No user interaction is necessary for exploitation.
Understanding CVE-2021-0427
This section delves into the details of the CVE-2021-0427 vulnerability.
What is CVE-2021-0427?
The CVE-2021-0427 vulnerability exists in parseExclusiveStateAnnotation of LogEvent.cpp in Android-11, enabling a local attacker to trigger an out-of-bounds write via a heap buffer overflow. Successful exploitation could result in privilege escalation with no extra privileges necessary, and the attack does not rely on user interaction.
The Impact of CVE-2021-0427
The impact includes the potential for a local attacker to exploit the vulnerability and achieve privilege escalation on affected Android-11 devices.
Technical Details of CVE-2021-0427
This section highlights technical aspects of the CVE-2021-0427 vulnerability.
Vulnerability Description
The vulnerability involves an out-of-bounds write due to a heap buffer overflow in parseExclusiveStateAnnotation of LogEvent.cpp in Android-11.
Affected Systems and Versions
The affected product is Android, specifically version Android-11.
Exploitation Mechanism
A local attacker could exploit this vulnerability to escalate privileges without requiring further execution privileges.
Mitigation and Prevention
Explore mitigations and preventive measures for CVE-2021-0427 in this section.
Immediate Steps to Take
Ensure timely application of security patches and updates provided by Android to address CVE-2021-0427.
Long-Term Security Practices
Implement robust security practices, such as regular security assessments and secure coding standards, to prevent similar vulnerabilities.
Patching and Updates
Regularly check for and apply security patches released by Android to safeguard against CVE-2021-0427.