CVE-2019-19388 : Security Advisory and Response
Learn about CVE-2019-19388, a cross-site scripting vulnerability in FusionPBX 4.4.1 that allows remote attackers to inject malicious scripts. Find mitigation steps and best practices for prevention.
FusionPBX 4.4.1 is susceptible to a cross-site scripting (XSS) vulnerability that allows remote attackers to inject arbitrary web scripts or HTML via the dialplan_uuid parameter.
Understanding CVE-2019-19388
This CVE entry describes a security issue in FusionPBX 4.4.1 that could lead to a cross-site scripting vulnerability.
What is CVE-2019-19388?
The vulnerability in FusionPBX 4.4.1 enables attackers to inject malicious web scripts or HTML through the dialplan_uuid parameter, potentially leading to cross-site scripting attacks.
The Impact of CVE-2019-19388
This vulnerability could allow remote attackers to execute arbitrary scripts within the context of the affected site, leading to various malicious activities such as stealing sensitive information or performing unauthorized actions.
Technical Details of CVE-2019-19388
FusionPBX 4.4.1's security flaw is detailed below:
Vulnerability Description
An arbitrary web script or HTML can be injected by remote attackers through the dialplan_uuid parameter, resulting in a cross-site scripting (XSS) vulnerability in FusionPBX 4.4.1's app/dialplans/dialplan_detail_edit.php.
Affected Systems and Versions
- Product: FusionPBX 4.4.1
- Vendor: FusionPBX
- Version: Not applicable
Exploitation Mechanism
The vulnerability is exploited by injecting malicious web scripts or HTML via the dialplan_uuid parameter, allowing attackers to execute unauthorized code on the affected system.
Mitigation and Prevention
To address CVE-2019-19388, follow these steps:
Immediate Steps to Take
- Update FusionPBX to the latest version to patch the vulnerability.
- Implement input validation mechanisms to sanitize user inputs and prevent script injections.
Long-Term Security Practices
- Regularly monitor and audit web applications for security vulnerabilities.
- Educate developers and users about the risks of cross-site scripting and best practices for secure coding.
Patching and Updates
- Apply security patches promptly to ensure that known vulnerabilities are mitigated and system security is maintained.