CVE-2018-5781 Explained : Impact and Mitigation

Mitel Connect ONSITE and Mitel ST versions are vulnerable to a PHP code injection attack, allowing unauthorized individuals to execute arbitrary code within the application's environment.

Understanding CVE-2018-5781

A weakness in the conferencing feature of Mitel Connect ONSITE and Mitel ST versions could lead to PHP code injection by manipulating requests to the vendrecording.php page.

What is CVE-2018-5781?

This vulnerability enables attackers to inject PHP code through crafted requests, potentially leading to the execution of arbitrary PHP code within the application.

The Impact of CVE-2018-5781

If exploited, unauthorized individuals can run any PHP code they desire within the affected application's environment, posing a significant security risk.

Technical Details of CVE-2018-5781

Mitel Connect ONSITE and Mitel ST versions are susceptible to a PHP code injection vulnerability.

Vulnerability Description

The vulnerability allows unauthenticated attackers to inject PHP code via carefully crafted requests to the vendrecording.php page.

Affected Systems and Versions

Mitel Connect ONSITE versions R1711-PREM and earlier
Mitel ST 14.2 release GA28 and earlier

Exploitation Mechanism

Attackers can exploit this vulnerability by sending manipulated requests to the vendrecording.php page, enabling them to execute arbitrary PHP code.

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices are crucial to mitigating the risks associated with CVE-2018-5781.

Immediate Steps to Take

Apply security patches provided by Mitel promptly
Monitor network traffic for any suspicious activity
Restrict access to vulnerable components

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities
Conduct security assessments and penetration testing to identify and remediate weaknesses
Educate users on secure coding practices and awareness of social engineering tactics
Implement network segmentation to limit the impact of potential breaches
Utilize intrusion detection and prevention systems to monitor and block malicious activities

Patching and Updates

Mitel has released patches to address the vulnerability. It is essential to apply these patches as soon as possible to secure the affected systems.