CVE-2023-21653 : Security Advisory and Response

This CVE-2023-21653 information pertains to a vulnerability affecting Snapdragon Mobile platforms by Qualcomm, Inc. The vulnerability was published on September 5, 2023.

Understanding CVE-2023-21653

The CVE-2023-21653 vulnerability involves a transient Denial of Service (DOS) issue in the modem when processing RRC reconfiguration message.

What is CVE-2023-21653?

The CVE-2023-21653 vulnerability is specifically related to a Transient DOS in Modem while processing RRC reconfiguration message.

The Impact of CVE-2023-21653

The impact of this vulnerability is rated as high, with an availability impact being noted as high in the CVSS score.

Technical Details of CVE-2023-21653

This section covers the technical details of CVE-2023-21653, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises from a reachable assertion in the modem while processing the RRC reconfiguration message.

Affected Systems and Versions

The affected systems include Snapdragon Mobile platforms with specific affected versions such as AR8035, QCA8081, QCA8337, QCN6024, QCN9024, SDX65, SDX70M, WCD9380, WCN6855, and WCN6856.

Exploitation Mechanism

With an attack complexity rated as low and an attack vector via the network, attackers can exploit this vulnerability with no user interaction required.

Mitigation and Prevention

In order to mitigate the CVE-2023-21653 vulnerability, immediate steps should be taken alongside the adoption of long-term security practices and applying necessary patches and updates.

Immediate Steps to Take

Users of affected systems should be vigilant for any signs of exploitation, prioritize security updates, and follow the recommendations provided by Qualcomm, Inc.

Long-Term Security Practices

Implementing best security practices such as network segmentation, regular security audits, and staying informed about security bulletins can enhance the overall security posture.

Patching and Updates

Ensuring that systems are kept up to date with the latest patches and firmware updates from the vendor is crucial in mitigating the risk associated with CVE-2023-21653.