CVE-2023-0348 : Security Advisory and Response

This CVE-2023-0348 was published on March 13, 2023, with the assigner organization being icscert. It involves a vulnerability in Akuvox E11 that allows direct SIP calls without enforcing access control by the SIP servers. This could potentially enable an attacker to contact any device within Akuvox and make unauthorized calls.

Understanding CVE-2023-0348

This section delves into the details of CVE-2023-0348, outlining its impact, technical aspects, and mitigation strategies.

What is CVE-2023-0348?

CVE-2023-0348 pertains to the improper access control vulnerability (CWE-284) present in Akuvox E11 devices. Due to a lack of access control enforcement by SIP servers, attackers can make direct SIP calls to any device within the Akuvox system.

The Impact of CVE-2023-0348

The impact of CVE-2023-0348 is rated as high severity according to the CVSS v3.1 scoring system. This vulnerability requires no privileges for exploitation and could lead to unauthorized communication between devices, potentially compromising the confidentiality of communications.

Technical Details of CVE-2023-0348

This section provides a detailed analysis of the vulnerability, including its description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

Akuvox E11 devices are affected by a lack of access control enforcement by SIP servers, allowing unauthorized direct SIP calls between devices within the system.

Affected Systems and Versions

The specific product affected by CVE-2023-0348 is the Akuvox E11, with all versions being vulnerable to the improper access control issue.

Exploitation Mechanism

Attackers can exploit this vulnerability by leveraging the lack of access control enforcement to place unauthorized calls within the Akuvox system.

Mitigation and Prevention

Mitigating CVE-2023-0348 requires immediate actions to secure the affected systems and implement long-term security practices to prevent similar exploits in the future.

Immediate Steps to Take

Implement access control measures to restrict unauthorized access to SIP calls.
Monitor and log SIP call activity for any unusual patterns or unauthorized connections.
Regularly update and patch the Akuvox E11 devices to address known vulnerabilities.

Long-Term Security Practices

Conduct regular security audits and penetration testing to identify and address potential vulnerabilities.
Educate system administrators and users on best practices for secure communication and access control.
Implement network segmentation to limit the impact of potential breaches.

Patching and Updates

Ensure that the Akuvox E11 devices are promptly updated with the latest firmware and security patches to address the improper access control vulnerability and enhance overall system security.