CVE-2020-28351 Explained : Impact and Mitigation

Mitel ShoreTel 19.46.1802.0 devices are vulnerable to a reflected cross-site scripting (XSS) attack due to insufficient validation, potentially allowing unauthenticated attackers to exploit this issue.

Understanding CVE-2020-28351

The vulnerability in Mitel ShoreTel 19.46.1802.0 devices could lead to a cross-site scripting attack, posing a risk to the security of the conferencing component.

What is CVE-2020-28351?

The CVE-2020-28351 vulnerability allows unauthenticated attackers to execute a reflected cross-site scripting attack via the PATH_INFO to index.php, exploiting insufficient validation for the time_zone object in the HOME_MEETING& page.

The Impact of CVE-2020-28351

Unauthenticated attackers can conduct cross-site scripting attacks on Mitel ShoreTel 19.46.1802.0 devices.
The vulnerability could lead to unauthorized access to sensitive information and potential data manipulation.

Technical Details of CVE-2020-28351

Mitel ShoreTel 19.46.1802.0 devices are susceptible to a specific type of cross-site scripting vulnerability.

Vulnerability Description

The vulnerability arises from inadequate validation for the time_zone object in the HOME_MEETING& page, enabling attackers to execute a reflected XSS attack.

Affected Systems and Versions

Product: Mitel ShoreTel 19.46.1802.0
Vendor: Mitel
Version: 19.46.1802.0

Exploitation Mechanism

Attackers can exploit the vulnerability by manipulating the PATH_INFO to index.php, allowing them to inject malicious scripts into the application and potentially compromise user data.

Mitigation and Prevention

Mitigating the CVE-2020-28351 vulnerability requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by Mitel to address the vulnerability.
Monitor and restrict access to the affected systems to prevent unauthorized exploitation.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities proactively.
Educate users and administrators about the risks of cross-site scripting attacks and best security practices.

Patching and Updates

Stay informed about security updates and patches released by Mitel for Mitel ShoreTel 19.46.1802.0 devices.
Promptly apply patches to ensure the security of the conferencing component and prevent potential exploitation.