CVE-2023-21633 : Security Advisory and Response

This CVE record pertains to a memory corruption vulnerability found in Linux while processing the QcRilRequestImsRegisterMultiIdentityMessage request.

Understanding CVE-2023-21633

This section will delve deeper into the details of CVE-2023-21633, including its impact, affected systems, and exploitation mechanism.

What is CVE-2023-21633?

The CVE-2023-21633 vulnerability involves memory corruption in Linux when handling the QcRilRequestImsRegisterMultiIdentityMessage request.

The Impact of CVE-2023-21633

The vulnerability's CVSSv3.1 base score is 6.7 out of 10, categorizing it as having a medium severity level. It has a low attack complexity, requires high privileges, and can result in high impacts on confidentiality, integrity, and availability.

Technical Details of CVE-2023-21633

In this section, we will explore the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability involves improper restriction of operations within the bounds of a memory buffer in Linux, specifically triggered during the processing of the QcRilRequestImsRegisterMultiIdentityMessage request.

Affected Systems and Versions

The vulnerability impacts various Qualcomm Snapdragon platforms, including products such as APQ8064AU, FastConnect series, MSM8996AU, Snapdragon Mobile, and many more listed in the container section.

Exploitation Mechanism

The exploitation of this vulnerability occurs locally and does not require user interaction. Attackers with high privileges can exploit this flaw to achieve high impacts on confidentiality, integrity, and availability of the affected systems.

Mitigation and Prevention

To address CVE-2023-21633, proactive steps need to be taken to mitigate risks and prevent potential exploitation.

Immediate Steps to Take

Implement patches or updates provided by Qualcomm to address the vulnerability promptly.
Monitor security bulletins and advisories for further guidance on mitigating the risk.

Long-Term Security Practices

Regularly update system software and firmware to ensure vulnerabilities are patched in a timely manner.
Employ security best practices such as least privilege access and network segmentation to limit the attack surface.

Patching and Updates

It is crucial to apply patches and updates released by Qualcomm to address the memory corruption vulnerability in Linux promptly. Stay informed about security bulletins and advisories to stay protected against potential threats.