EUVD-2024-0725

Comprehensive Technical Analysis of EUVD-2024-0725

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2024-0725 is a stored cross-site scripting (XSS) issue affecting the Users Admin module's edit user page in Liferay Portal and Liferay DXP. The Base Score of 9.0, as per CVSS 3.1, indicates a critical severity level. The vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H breaks down as follows:

• Attack Vector (AV): Network (N) - The vulnerability is exploitable over the network.
• Attack Complexity (AC): Low (L) - The attack requires minimal skill or resources.
• Privileges Required (PR): Low (L) - The attacker needs low-level privileges to exploit the vulnerability.
• User Interaction (UI): Required (R) - The attack requires some form of user interaction.
• Scope (S): Changed (C) - The vulnerability can affect resources beyond the security scope managed by the security authority.
• Confidentiality (C): High (H) - There is a high impact on the confidentiality of the system.
• Integrity (I): High (H) - There is a high impact on the integrity of the system.
• Availability (A): High (H) - There is a high impact on the availability of the system.

Given these factors, the vulnerability poses a significant risk to the integrity, confidentiality, and availability of affected systems.

2. Potential Attack Vectors and Exploitation Methods

The stored XSS vulnerability can be exploited by injecting malicious scripts into the "Name" text field of an organization within the Users Admin module. The attack vectors include:

• Remote Authenticated Users: An attacker with authenticated access can inject a crafted payload into the "Name" field.
• User Interaction: The injected script will be executed when another user views the affected page, leading to potential data theft, session hijacking, or other malicious activities.

Exploitation methods may involve:

• Script Injection: Injecting JavaScript code that steals cookies, session tokens, or other sensitive information.
• Phishing Attacks: Redirecting users to malicious sites or displaying fake login forms to capture credentials.
• Data Manipulation: Altering the content displayed to users, leading to misinformation or unauthorized actions.

3. Affected Systems and Software Versions

The vulnerability affects the following versions of Liferay Portal and Liferay DXP:

• Liferay Portal: Versions 7.2.0 through 7.4.2, and older unsupported versions.
• Liferay DXP:
  • Version 7.3 before service pack 3.
  • Version 7.2 before fix pack 17.
  • Older unsupported versions.

4. Recommended Mitigation Strategies

To mitigate the risk associated with this vulnerability, the following strategies are recommended:

• Patch Management: Apply the latest security patches and updates provided by Liferay. For Liferay DXP, ensure that service pack 3 for version 7.3 and fix pack 17 for version 7.2 are installed.
• Input Validation: Implement robust input validation and sanitization mechanisms to prevent the injection of malicious scripts.
• Content Security Policy (CSP): Enforce a strict CSP to limit the execution of unauthorized scripts.
• User Training: Educate users about the risks of XSS attacks and the importance of verifying the authenticity of web content.
• Regular Audits: Conduct regular security audits and vulnerability assessments to identify and address potential security issues.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant threat to organizations using Liferay Portal and Liferay DXP within the European Union. Given the critical nature of the vulnerability, it could lead to:

• Data Breaches: Compromise of sensitive user data, including personal information and credentials.
• Compliance Issues: Violation of GDPR and other regulatory requirements, resulting in legal and financial penalties.
• Operational Disruptions: Interruption of business operations due to unauthorized access or data manipulation.

6. Technical Details for Security Professionals

For security professionals, the following technical details are pertinent:

• Detection: Implement monitoring and logging mechanisms to detect and alert on suspicious activities related to the "Name" field in the Users Admin module.
• Response: Develop an incident response plan that includes steps for isolating affected systems, containing the threat, and restoring normal operations.
• Prevention: Use web application firewalls (WAFs) to filter out malicious input and prevent XSS attacks.
• Testing: Conduct thorough penetration testing and code reviews to identify and remediate similar vulnerabilities in other parts of the application.

Conclusion

EUVD-2024-0725 highlights a critical stored XSS vulnerability in Liferay Portal and Liferay DXP. Organizations must prioritize patching affected systems, implementing robust security controls, and educating users to mitigate the risk. The impact on the European cybersecurity landscape underscores the importance of proactive security measures to protect against such threats.

References

• NVD Detail for CVE-2024-25602
• Liferay Portal GitHub Repository
• Liferay Security Known Vulnerabilities