CVE-2023-52353 : Security Advisory and Response

A security issue has been identified in Mbed TLS through version 3.5.1 where the handling of the maximum negotiable TLS version is incorrect in the mbedtls_ssl_session_reset function.

Understanding CVE-2023-52353

This section will provide detailed information on the impact and technical details of CVE-2023-52353.

What is CVE-2023-52353?

CVE-2023-52353 is a vulnerability in Mbed TLS that affects the maximum negotiable TLS version, leading to potential security risks in TLS negotiation processes.

The Impact of CVE-2023-52353

The mishandling of the maximum negotiable TLS version in Mbed TLS can result in the incorrect establishment of secure connections, potentially exposing sensitive data to unauthorized parties.

Technical Details of CVE-2023-52353

This section will delve into the vulnerability description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

In mbedtls_ssl_session_reset, the maximum negotiable TLS version is mishandled, leading to the establishment of insecure connections.

Affected Systems and Versions

All versions of Mbed TLS up to 3.5.1 are affected by this vulnerability, impacting the security of TLS communication.

Exploitation Mechanism

Attackers can exploit this vulnerability to potentially downgrade the negotiated TLS version, compromising the confidentiality and integrity of data transmission.

Mitigation and Prevention

To safeguard systems from CVE-2023-52353, immediate actions and long-term security practices are recommended.

Immediate Steps to Take

Affected users are advised to update Mbed TLS to a patched version that addresses the mishandling of the maximum negotiable TLS version.

Long-Term Security Practices

Implementing robust TLS configurations, regularly monitoring for security updates, and conducting security audits can help prevent similar vulnerabilities in the future.

Patching and Updates

Regularly updating Mbed TLS to the latest secure versions and applying patches released by the vendor is crucial to mitigate the risks associated with CVE-2023-52353.