CVE-2022-39903 : Security Advisory and Response

A detailed analysis of the Improper access control vulnerability in RCS call prior to SMR Dec-2022 Release 1 affecting Samsung Mobile devices.

Understanding CVE-2022-39903

This section provides insights into the nature and impact of CVE-2022-39903.

What is CVE-2022-39903?

CVE-2022-39903 is an improper access control vulnerability in RCS call before the SMR Dec-2022 Release 1, enabling local attackers to access RCS incoming call numbers on Samsung Mobile devices.

The Impact of CVE-2022-39903

The vulnerability poses a medium risk with a CVSS base score of 4, allowing local attackers to compromise the confidentiality of sensitive information.

Technical Details of CVE-2022-39903

In this section, we delve into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability arises from improper access control in RCS call functions, leading to unauthorized access to call numbers.

Affected Systems and Versions

Samsung Mobile Devices running Select Q(10), R(11), S(12), T(13) versions supporting RCS are impacted, with versions prior to SMR Dec-2022 Release 1.

Exploitation Mechanism

Local attackers exploit the vulnerability to gain unauthorized access to RCS incoming call numbers on the affected devices.

Mitigation and Prevention

Here, we discuss the steps to mitigate and prevent exploitation of CVE-2022-39903.

Immediate Steps to Take

Users are advised to update their devices to SMR Dec-2022 Release 1 or later to address the vulnerability. Avoiding untrusted networks can also mitigate risks.

Long-Term Security Practices

Implementing network security measures, restricting access to sensitive data, and keeping devices updated are essential for long-term security.

Patching and Updates

Regularly applying security patches and updates from Samsung Mobile is crucial to safeguard devices against vulnerabilities like CVE-2022-39903.