CVE-2021-0690 : What You Need to Know

A heap buffer overflow vulnerability, identified as CVE-2021-0690, has been found in Android devices. This flaw, specifically in ih264d_mark_err_slice_skip of ih264d_parse_pslice.c, poses a risk of remote information disclosure without requiring additional execution privileges.

Understanding CVE-2021-0690

This section will provide insights into the nature and impact of the CVE-2021-0690 vulnerability.

What is CVE-2021-0690?

CVE-2021-0690 is an information disclosure vulnerability present in Android devices. By exploiting this flaw, an attacker could trigger a heap buffer overflow, potentially leading to the exposure of sensitive information. User interaction is necessary for successful exploitation.

The Impact of CVE-2021-0690

The vulnerability could be exploited remotely to obtain unauthorized access to confidential data stored on the affected Android devices, compromising user privacy and security.

Technical Details of CVE-2021-0690

Delve deeper into the technical aspects of the CVE-2021-0690 vulnerability to understand its implications and affected systems.

Vulnerability Description

The flaw resides in ih264d_mark_err_slice_skip of ih264d_parse_pslice.c, allowing for an out-of-bounds write operation that results in a heap buffer overflow. This could be leveraged by malicious actors to extract sensitive information without the need for elevated privileges.

Affected Systems and Versions

Android versions 9, 10, 11, and 8.1 are known to be impacted by CVE-2021-0690. Devices running these versions are susceptible to the identified vulnerability.

Exploitation Mechanism

To exploit CVE-2021-0690, attackers can craft malicious payloads to trigger the heap buffer overflow, potentially leading to the unauthorized disclosure of information stored on the affected Android devices.

Mitigation and Prevention

Explore the necessary steps to mitigate the risk posed by CVE-2021-0690 and enhance the overall security posture of Android devices.

Immediate Steps to Take

Users are advised to apply security patches released by the vendor promptly to address the CVE-2021-0690 vulnerability. Additionally, exercise caution while interacting with untrusted sources or applications to mitigate the risk of exploitation.

Long-Term Security Practices

Maintaining up-to-date software versions, practicing secure browsing habits, and exercising vigilance against suspicious activities can help prevent potential security breaches resulting from vulnerabilities like CVE-2021-0690.

Patching and Updates

Regularly check for and install security updates provided by the Android platform to ensure that known vulnerabilities, including CVE-2021-0690, are adequately patched to protect against exploitation.