CVE-2023-21090 : What You Need to Know

This article discusses CVE-2023-21090, a security vulnerability identified in Android leading to a possible denial of service attack. It was published on April 19, 2023, by Google Android.

Understanding CVE-2023-21090

CVE-2023-21090 is a vulnerability found in the parseUsesPermission function of ParsingPackageUtils.java in Android. This vulnerability could potentially result in a boot loop situation, causing resource exhaustion and leading to a local denial of service attack. The exploitation of this vulnerability requires user interaction and does not necessitate additional execution privileges.

What is CVE-2023-21090?

The CVE-2023-21090 vulnerability in Android's parseUsesPermission function can trigger a boot loop scenario, ultimately exhausting resources and facilitating a denial of service attack without requiring extra execution privileges.

The Impact of CVE-2023-21090

CVE-2023-21090 poses a risk of local denial of service on affected Android devices running version Android-13. This vulnerability could disrupt the normal operation of the system and potentially render it unusable.

Technical Details of CVE-2023-21090

The technical aspects of CVE-2023-21090 shed light on the vulnerability, the affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability in Android's parseUsesPermission function can result in a boot loop scenario, causing resource exhaustion and leading to denial of service, all with the involvement of user interaction.

Affected Systems and Versions

The CVE-2023-21090 vulnerability impacts the Android operating system, specifically affecting devices running Android version 13.

Exploitation Mechanism

To exploit CVE-2023-21090, an attacker would need to engage with the affected Android device, triggering the parseUsesPermission function and causing a boot loop that exhausts resources, paving the way for a denial of service attack.

Mitigation and Prevention

Addressing CVE-2023-21090 requires immediate action to mitigate the risk and prevent potential attacks. Implementing security measures and keeping systems updated are essential steps to safeguard against this vulnerability.

Immediate Steps to Take

Users and administrators should be cautious when interacting with unknown or suspicious content on Android devices to mitigate the risk of exploitation. Additionally, monitoring system behavior for any signs of resource exhaustion or abnormal operation can help detect an ongoing attack.

Long-Term Security Practices

Practicing good security hygiene, such as regular software updates, using reputable sources for applications, and maintaining awareness of potential threats, can contribute to long-term protection against vulnerabilities like CVE-2023-21090.

Patching and Updates

It is crucial for users to stay informed about security updates released by Google Android for Android devices. Applying patches promptly can address known vulnerabilities, including CVE-2023-21090, and enhance the overall security posture of the system.