EUVD-2023-39117

Comprehensive Technical Analysis of EUVD-2023-39117

1. Vulnerability Assessment and Severity Evaluation

Vulnerability Description: The EUVD entry EUVD-2023-39117 describes an authentication bypass vulnerability in Ivanti EPMM (Enterprise Mobility Management) versions 11.10 and older. This vulnerability allows unauthorized users to access restricted functionality or resources without proper authentication. The vulnerability is identified as CVE-2023-35078 and is unique to this specific CVE.

Severity Evaluation: The vulnerability has a CVSS (Common Vulnerability Scoring System) base score of 10.0, which is the highest possible score, indicating a critical severity. The CVSS vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H breaks down as follows:

• AV:N (Attack Vector: Network) - The vulnerability is exploitable over the network.
• AC:L (Attack Complexity: Low) - The attack requires low complexity to exploit.
• PR:N (Privileges Required: None) - No privileges are required to exploit the vulnerability.
• UI:N (User Interaction: None) - No user interaction is required for the attack to succeed.
• S:C (Scope: Changed) - The vulnerability affects a different security scope.
• C:H (Confidentiality: High) - The vulnerability has a high impact on confidentiality.
• I:H (Integrity: High) - The vulnerability has a high impact on integrity.
• A:H (Availability: High) - The vulnerability has a high impact on availability.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Network-Based Attacks: Given the CVSS vector, attackers can exploit this vulnerability remotely over the network.
• Unauthenticated API Access: The vulnerability allows unauthorized access to APIs, which can be leveraged to perform unauthorized actions.

Exploitation Methods:

• API Endpoint Exploitation: Attackers can send crafted requests to specific API endpoints to bypass authentication mechanisms.
• Automated Scripts: Attackers can use automated scripts to scan for vulnerable instances of Ivanti EPMM and exploit the vulnerability en masse.

3. Affected Systems and Software Versions

Affected Systems:

• Ivanti EPMM versions 11.10 and older.

Software Versions:

• All versions up to and including 11.10 are affected.

4. Recommended Mitigation Strategies

Immediate Actions:

• Patching: Upgrade to a patched version of Ivanti EPMM that addresses CVE-2023-35078.
• Network Segmentation: Isolate vulnerable systems from the network to limit exposure.
• Monitoring: Implement enhanced monitoring for suspicious activities related to API access.

Long-Term Strategies:

• Regular Updates: Ensure that all software, especially critical systems like EPMM, are regularly updated and patched.
• Access Controls: Implement strict access controls and multi-factor authentication (MFA) to add an additional layer of security.
• Security Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate potential vulnerabilities.

5. Impact on European Cybersecurity Landscape

Impact Analysis:

• Critical Infrastructure: Organizations using Ivanti EPMM for managing mobile devices, especially in critical infrastructure sectors, are at high risk.
• Data Breaches: The vulnerability can lead to significant data breaches, compromising confidentiality, integrity, and availability of sensitive information.
• Compliance: Organizations may face compliance issues if they fail to address this vulnerability, especially under regulations like GDPR.

Regulatory Implications:

• GDPR Compliance: Organizations must ensure they comply with GDPR by protecting personal data. Failure to address this vulnerability can result in regulatory penalties.
• ENISA Guidelines: Follow ENISA guidelines for vulnerability management and incident response to mitigate risks effectively.

6. Technical Details for Security Professionals

Technical Insights:

• API Security: Ensure that all API endpoints are secured with proper authentication and authorization mechanisms.
• Logging and Monitoring: Implement comprehensive logging and monitoring to detect and respond to unauthorized access attempts.
• Incident Response: Develop and test incident response plans to quickly address any potential breaches resulting from this vulnerability.

References:

• Ivanti Forums: CVE-2023-35082 - Remote Unauthenticated API Access Vulnerability in MobileIron Core 11.2 and older
• EPSS Score: The EPSS (Exploit Prediction Scoring System) score of 94 indicates a high likelihood of exploitation in the wild.

Conclusion: The authentication bypass vulnerability in Ivanti EPMM versions 11.10 and older poses a significant risk to organizations. Immediate patching and implementation of robust security measures are essential to mitigate this critical vulnerability. Organizations should also ensure compliance with relevant regulations and guidelines to protect against potential data breaches and legal repercussions.