CVE-2023-21626 Explained : Impact and Mitigation

This CVE record pertains to a cryptographic vulnerability found in HLOS due to improper authentication while performing key velocity checks using more than one key. It was published on August 8, 2023, by Qualcomm.

Understanding CVE-2023-21626

This section delves into the details of the CVE-2023-21626 vulnerability affecting Qualcomm's products.

What is CVE-2023-21626?

The CVE-2023-21626 vulnerability involves a cryptographic issue in HLOS due to improper authentication during key velocity checks using multiple keys. This flaw can have severe impacts on confidentiality and integrity.

The Impact of CVE-2023-21626

With a CVSS v3.1 base score of 7.1, this vulnerability is considered high severity. It has a low attack complexity and vector as well as low privileges required, making it easier for threat actors to exploit. The impact on confidentiality and integrity is rated as high, while availability is not affected.

Technical Details of CVE-2023-21626

This section provides a deeper insight into the technical aspects of CVE-2023-21626.

Vulnerability Description

The vulnerability stems from improper authentication processes in HLOS, specifically during key velocity checks utilizing more than one key. This flaw opens up avenues for malicious actors to compromise cryptographic operations.

Affected Systems and Versions

Qualcomm's Snapdragon series, spanning across various platforms like Snapdragon Auto, Compute, Connectivity, IoT, Mobile, Voice & Music, and Wearables, are impacted by CVE-2023-21626. Several versions of Qualcomm products are affected, including APQ series, MDM series, MSM series, SD series, and more.

Exploitation Mechanism

The vulnerability can be exploited by attackers to bypass authentication mechanisms in the HLOS environment, potentially leading to unauthorized access to sensitive data or cryptographic keys.

Mitigation and Prevention

Understanding the implications of CVE-2023-21626, it is crucial to implement appropriate mitigation strategies and preventive measures.

Immediate Steps to Take

Users and organizations should apply patches or updates released by Qualcomm promptly to address the vulnerability. Additionally, monitoring systems for any unauthorized access attempts can help detect potential exploitation.

Long-Term Security Practices

In the long run, ensuring robust authentication mechanisms, regular security audits, and employee awareness training on cryptographic best practices can enhance overall security posture and reduce the risk of similar vulnerabilities.

Patching and Updates

Regularly check for security bulletins and updates from Qualcomm regarding CVE-2023-21626. Applying patches as soon as they are available is critical to safeguarding systems against potential exploitation.