CVE-2023-21649 : Exploit Details and Defense Strategies

This CVE record pertains to a memory corruption vulnerability in WLAN that occurs while running doDriverCmd for an unspecified command.

Understanding CVE-2023-21649

This section will delve into the details of CVE-2023-21649, focusing on what the vulnerability entails and its potential impact.

What is CVE-2023-21649?

The vulnerability involves a buffer copy without checking the size of the input, also known as a

Classic Buffer Overflow

, in the WLAN component.

The Impact of CVE-2023-21649

The impact of this vulnerability is significant, with a moderate base severity score. The confidentiality, integrity, and availability of the affected systems are at high risk. The attack complexity is low, and local access is required for exploitation.

Technical Details of CVE-2023-21649

In this section, we will explore the technical aspects of CVE-2023-21649, including the vulnerability description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

The vulnerability stems from memory corruption in WLAN when executing doDriverCmd for an unspecified command, leading to a classic buffer overflow scenario.

Affected Systems and Versions

The vulnerability affects a wide range of Qualcomm Snapdragon products, including versions like APQ8096AU, MDM9628, QCA6390, SD855, SD865 5G, and many more.

Exploitation Mechanism

The exploitation of this vulnerability requires high privileges and local access to the affected systems. By triggering the buffer overflow, an attacker could potentially execute arbitrary code or disrupt the system's normal operation.

Mitigation and Prevention

To address CVE-2023-21649 and reduce the risk it poses, proactive mitigation measures and long-term security practices are essential.

Immediate Steps to Take

Users and administrators are advised to apply patches and updates provided by Qualcomm promptly. Additionally, restricting access to vulnerable systems and monitoring for any unusual activity can help mitigate the risk.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security assessments, and staying informed about security bulletins and updates from vendors are crucial for maintaining overall system security.

Patching and Updates

Qualcomm has released patches to address CVE-2023-21649. Users should ensure they have applied the latest patches and updates to mitigate the vulnerability effectively.