CVE-2022-20210 : What You Need to Know

A vulnerability has been identified in Android SoC that could allow an attacker to remotely crash the modem, potentially leading to a Denial of Service (DoS) or Remote Code Execution (RCE).

Understanding CVE-2022-20210

This CVE pertains to a bug in the parsing code of the modem on Android SoC, allowing for a remote attack vector.

What is CVE-2022-20210?

The bug allows for the parsing of NAS messages to be manipulated by an attacker, leading to potential modem crashes and severe consequences.

The Impact of CVE-2022-20210

Exploiting this vulnerability can result in serious outcomes such as DoS attacks or the execution of arbitrary code on the affected device.

Technical Details of CVE-2022-20210

The technical aspects of this vulnerability include:

Vulnerability Description

The bug allows an attacker to craft NAS messages to crash the modem remotely.

Affected Systems and Versions

Android devices using the Android SoC are vulnerable to this exploit.

Exploitation Mechanism

By sending specially crafted NAS messages, an attacker can trigger the vulnerable parsing code on the modem, leading to a crash.

Mitigation and Prevention

To address CVE-2022-20210, follow these guidelines:

Immediate Steps to Take

Apply security updates provided by the device manufacturer.
Implement network-level protections to filter out malicious NAS messages.

Long-Term Security Practices

Regularly update the device's firmware and security patches.
Monitor for unusual modem behavior or crashes.

Patching and Updates

Stay informed about security bulletins from Android to apply relevant patches promptly.