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CVE-2023-21492 : Vulnerability Insights and Analysis

Learn about CVE-2023-21492 discovered by Samsung Mobile on May 4, 2023, posing a risk of privilege escalation. Explore impact, technical details, and mitigation strategies.

This CVE-2023-21492 was published by Samsung Mobile on May 4, 2023, highlighting a vulnerability where kernel pointers are printed in the log file prior to SMR May-2023 Release 1. This flaw could potentially allow a privileged local attacker to bypass ASLR.

Understanding CVE-2023-21492

This section will delve into what CVE-2023-21492 entails, its impacts, technical details, and mitigation strategies.

What is CVE-2023-21492?

CVE-2023-21492 involves the printing of kernel pointers in the log file before the SMR May-2023 Release 1 by Samsung Mobile devices. This action can be exploited by a privileged local attacker to bypass ASLR.

The Impact of CVE-2023-21492

The impact of this vulnerability is rated as MEDIUM severity with a CVSS base score of 4.4. As a local attack vector with high privileges required, the confidentiality impact is high while the integrity and availability impacts are rated as none.

Technical Details of CVE-2023-21492

To better understand CVE-2023-21492, we will explore the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability involves the improper printing of kernel pointers in the log file, allowing attackers to bypass ASLR and potentially escalate their privileges.

Affected Systems and Versions

Samsung Mobile devices running selected Android 11, 12, and 13 versions are affected by this vulnerability. Devices with software versions less than SMR May-2023 Release 1 are at risk.

Exploitation Mechanism

A privileged local attacker can exploit this vulnerability by leveraging the exposed kernel pointers in the log files to bypass ASLR and potentially carry out further attacks.

Mitigation and Prevention

In response to CVE-2023-21492, it is crucial to take immediate steps to address the issue, establish long-term security practices, and ensure timely patching and updates.

Immediate Steps to Take

Users of affected Samsung Mobile devices should be cautious and avoid executing untrusted code or accessing unverified websites to prevent potential exploitation of this vulnerability.

Long-Term Security Practices

Implementing concepts like the principle of least privilege, regular security audits, and timely security updates can help enhance the overall security posture of devices and mitigate future vulnerabilities.

Patching and Updates

Samsung Mobile users should prioritize installing the SMR May-2023 Release 1 or subsequent security updates to mitigate the CVE-2023-21492 vulnerability and enhance the security of their devices.

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