EUVD-2023-2930

Comprehensive Technical Analysis of EUVD-2023-2930

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2023-2930, also known as CVE-2023-6026, is a Path Traversal vulnerability affecting the elijaa/phpmemcachedadmin software, specifically version 1.3.0. This vulnerability allows an attacker to delete files stored on the server due to insufficient verification of user-supplied input.

Severity Evaluation:

• Base Score: 9.8 (Critical)
• Base Score Version: CVSS 3.1
• Base Score Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The CVSS score of 9.8 indicates a critical vulnerability. The high scores for Confidentiality (C:H), Integrity (I:H), and Availability (A:H) reflect the potential for significant impact if exploited. The attack vector (AV:N) is network-based, requiring low complexity (AC:L) and no privileges (PR:N) or user interaction (UI:N). The scope is unchanged (S:U).

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Network-Based Attack: An attacker can exploit this vulnerability remotely over the network.
• User Input Manipulation: The attacker can manipulate user-supplied input to traverse directories and access or delete files outside the intended directory.

Exploitation Methods:

• Directory Traversal: By crafting specific input strings, an attacker can traverse directories and access files outside the intended scope.
• File Deletion: The attacker can delete critical system files, configuration files, or other sensitive data, leading to system instability or data loss.

3. Affected Systems and Software Versions

Affected Software:

• elijaa/phpmemcachedadmin version 1.3.0

Affected Systems:

• Any server or system running the affected version of elijaa/phpmemcachedadmin.
• Systems that rely on PHPMemcachedAdmin for managing Memcached instances.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Upgrade Software: Upgrade to a patched version of elijaa/phpmemcachedadmin if available.
• Input Validation: Implement strict input validation and sanitization to prevent directory traversal attacks.
• Access Controls: Restrict access to the PHPMemcachedAdmin interface to trusted users only.
• Monitoring: Implement monitoring and logging to detect and respond to suspicious activities.

Long-Term Mitigation:

• Regular Updates: Ensure that all software components are regularly updated and patched.
• Security Audits: Conduct regular security audits and vulnerability assessments.
• Training: Provide training for developers and administrators on secure coding practices and input validation techniques.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to organizations within the European Union that use elijaa/phpmemcachedadmin. The potential for unauthorized file deletion can lead to data loss, system downtime, and potential breaches of sensitive information. This underscores the importance of robust cybersecurity measures and timely patch management to protect critical infrastructure and data.

6. Technical Details for Security Professionals

Vulnerability Details:

• Type: Path Traversal
• Cause: Insufficient verification of user-supplied input
• Impact: Unauthorized file deletion, potential data loss, and system instability

References:

• NVD: CVE-2023-6026
• GitHub Security Advisory: CVE-2023-6026.yaml
• GitHub Repository: elijaa/phpmemcachedadmin
• Packagist: elijaa/phpmemcacheadmin
• INCIBE Advisory: Multiple Vulnerabilities in PHPMemcachedAdmin

Aliases:

• CVE: CVE-2023-6026
• GHSA: GHSA-8qfm-h8rh-h3r7

Assigner:

• INCIBE

EPSS Score:

• EPSS: 1 (indicating a low likelihood of exploitation in the wild)

ENISA IDs:

• Product: f810a162-c54e-390c-9a0c-e56492583fcd (PHPMemcachedAdmin version 1.3.0)
• Vendor: b3d7cd69-7896-315e-af68-864460a88e49 (PHPMemcachedAdmin)

Conclusion

The Path Traversal vulnerability in elijaa/phpmemcachedadmin version 1.3.0 is critical and requires immediate attention. Organizations should prioritize upgrading to a patched version and implementing robust input validation and access controls to mitigate the risk. Regular security audits and training can further enhance the overall security posture and protect against similar vulnerabilities in the future.