CVE-2019-9919 : Exploit Details and Defense Strategies
Learn about CVE-2019-9919, a vulnerability in Harmis JE Messenger component 1.2.2 for Joomla! allowing XSS attacks. Find mitigation steps and long-term security practices here.
The Harmis JE Messenger component 1.2.2 for Joomla! is vulnerable to a cross-site scripting (XSS) attack due to the execution of JavaScript code when a malicious message is opened.
Understanding CVE-2019-9919
The vulnerability in Harmis JE Messenger component 1.2.2 for Joomla! allows for the execution of JavaScript code on the recipient's side, leading to a cross-site scripting (XSS) attack.
What is CVE-2019-9919?
This CVE refers to a security flaw in the Harmis JE Messenger component 1.2.2 for Joomla!, enabling the execution of JavaScript code upon opening a crafted message, potentially resulting in a cross-site scripting (XSS) attack.
The Impact of CVE-2019-9919
The vulnerability poses a medium severity risk with a CVSS base score of 5.4. It requires low privileges and user interaction but can lead to the compromise of confidentiality and integrity.
Technical Details of CVE-2019-9919
The technical aspects of the CVE-2019-9919 vulnerability are as follows:
Vulnerability Description
- The Harmis JE Messenger component 1.2.2 for Joomla! allows the execution of JavaScript code on the recipient's side.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: Not applicable
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: Low
- User Interaction: Required
- Scope: Changed
- Impact: Low confidentiality and integrity impact, no availability impact
Mitigation and Prevention
To address CVE-2019-9919, consider the following mitigation strategies:
Immediate Steps to Take
- Disable or remove the Harmis JE Messenger component 1.2.2 for Joomla! if not essential.
- Educate users about the risks of opening suspicious messages.
Long-Term Security Practices
- Regularly update Joomla! and its extensions to patch known vulnerabilities.
- Implement content security policies to mitigate XSS risks.
Patching and Updates
- Check for security updates from Joomla! and apply patches promptly to prevent exploitation of known vulnerabilities.