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CVE-2021-0601 Explained : Impact and Mitigation

Learn about CVE-2021-0601, a vulnerability in Android's encodeFrames function that could lead to local information disclosure without additional execution privileges. Find out how to mitigate the risk.

This article provides an in-depth analysis of CVE-2021-0601, a vulnerability found in the encodeFrames function of avc_enc_fuzzer.cpp in Android. The vulnerability could potentially lead to local information disclosure without requiring additional execution privileges.

Understanding CVE-2021-0601

CVE-2021-0601 is a security flaw identified in the encodeFrames function of avc_enc_fuzzer.cpp in Android operating systems. The vulnerability allows for an out-of-bounds write due to a double free, which could result in local information disclosure.

What is CVE-2021-0601?

The CVE-2021-0601 vulnerability arises from a possible out-of-bounds write triggered by a double free in the encodeFrames function of avc_enc_fuzzer.cpp. A malicious actor could exploit this issue to disclose sensitive local information without needing additional execution privileges. The affected product versions include Android-10, Android-11, Android-8.1, and Android-9.

The Impact of CVE-2021-0601

The impact of CVE-2021-0601 is the potential exposure of local information without requiring user interaction or elevated privileges. This could lead to security breaches and unauthorized access to sensitive data stored on affected Android devices.

Technical Details of CVE-2021-0601

The technical details of CVE-2021-0601 shed light on the vulnerability, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability in the encodeFrames function of avc_enc_fuzzer.cpp permits an out-of-bounds write due to a double free, posing a risk of local information disclosure on Android devices running versions such as Android-10, Android-11, Android-8.1, and Android-9.

Affected Systems and Versions

Android devices using versions Android-10, Android-11, Android-8.1, and Android-9 are susceptible to the CVE-2021-0601 vulnerability, thus exposing them to the risk of local information disclosure.

Exploitation Mechanism

Malicious actors exploit the vulnerability by triggering a double free in the encodeFrames function of avc_enc_fuzzer.cpp, leading to an out-of-bounds write that could result in the disclosure of sensitive local information.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-0601, immediate steps and long-term security practices are necessary to ensure the safety of Android devices.

Immediate Steps to Take

Users of affected Android devices should apply security patches provided by the vendor promptly to address the CVE-2021-0601 vulnerability. Additionally, users are advised to remain cautious while interacting with untrusted sources or applications.

Long-Term Security Practices

To enhance long-term security, users should regularly update their Android devices with the latest security patches and follow best practices for secure device usage. Implementing strong access controls and avoiding suspicious links or downloads can also help prevent exploitation of vulnerabilities.

Patching and Updates

Vendor-issued patches are crucial for addressing CVE-2021-0601. Users should monitor official sources for security bulletins and updates, ensuring the timely application of patches to safeguard their devices from potential threats.

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