CVE-2021-39680 : What You Need to Know
Discover details about CVE-2021-39680, a vulnerability in the Android kernel that allows unauthorized data access and information disclosure. Learn mitigation steps and preventive measures.
This CVE-2021-39680 article provides insights into a security vulnerability affecting Android systems and the potential risks associated with it.
Understanding CVE-2021-39680
This section delves into the core details of the CVE-2021-39680 vulnerability.
What is CVE-2021-39680?
CVE-2021-39680 involves a vulnerability in sec_SHA256_Transform of sha256_core.c within the Android kernel. It allows the unauthorized reading of heap data due to uninitialized data, potentially leading to local information disclosure.
The Impact of CVE-2021-39680
The vulnerability poses a risk of local information disclosure, requiring System execution privileges but not user interaction for exploitation.
Technical Details of CVE-2021-39680
Explore the technical aspects of the CVE-2021-39680 vulnerability.
Vulnerability Description
The flaw in sec_SHA256_Transform of sha256_core.c allows for the reading of uninitialized heap data, opening avenues for local information disclosure.
Affected Systems and Versions
- Affected Product: Android
- Affected Version: Android kernel
Exploitation Mechanism
The vulnerability can be exploited to leak sensitive data locally and does not require user interaction for malicious activities.
Mitigation and Prevention
Learn how to mitigate the risks associated with CVE-2021-39680.
Immediate Steps to Take
- Apply patches and updates provided by the vendor promptly.
- Monitor security bulletins and updates regarding this vulnerability.
Long-Term Security Practices
- Implement strict input validation mechanisms to prevent data leakage.
- Conduct regular security audits and testing to identify similar vulnerabilities.
Patching and Updates
Regularly update the Android kernel and apply security patches to safeguard against vulnerabilities like CVE-2021-39680.