CVE-2018-5779 : Exploit Details and Defense Strategies

Mitel Connect ONSITE and Mitel ST are affected by a security weakness that could allow unauthorized code execution.

Understanding CVE-2018-5779

A vulnerability in Mitel Connect ONSITE and Mitel ST versions could enable attackers to execute arbitrary code.

What is CVE-2018-5779?

A security weakness in Mitel Connect ONSITE and Mitel ST versions could permit attackers to insert and run harmful scripts, potentially leading to unauthorized code execution.

The Impact of CVE-2018-5779

If exploited, this vulnerability could allow attackers to execute any code within the application's context, posing a significant security risk.

Technical Details of CVE-2018-5779

Mitel Connect ONSITE and Mitel ST versions are susceptible to unauthorized code execution due to a vulnerability in their conferencing component.

Vulnerability Description

The vulnerability allows unauthenticated attackers to insert malicious scripts into PHP files and execute them using specially crafted requests.

Affected Systems and Versions

Mitel Connect ONSITE versions R1711-PREM and older
Mitel ST 14.2 up to and including release GA28

Exploitation Mechanism

Attackers can copy malicious scripts into newly generated PHP files and execute them through carefully crafted requests, potentially leading to arbitrary code execution.

Mitigation and Prevention

To address CVE-2018-5779, follow these steps:

Immediate Steps to Take

Update Mitel Connect ONSITE and Mitel ST to the latest versions
Monitor for any unauthorized file modifications

Long-Term Security Practices

Regularly review and update security configurations
Conduct security assessments and penetration testing

Patching and Updates

Apply security patches provided by Mitel