EUVD-2023-33474

Comprehensive Technical Analysis of EUVD-2023-33474

1. Vulnerability Assessment and Severity Evaluation

Vulnerability Description: Metersphere v1.20.20-lts-79d354a6 is vulnerable to Remote Command Execution (RCE). The vulnerability allows an attacker to execute system commands, specifically a reverse-shell, through the custom code snippet function of the Metersphere system workbench.

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 vector string 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.
• S:U (Scope: Unchanged) - The vulnerability does not change the 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 attack vector is network-based, an attacker can exploit this vulnerability remotely without needing physical access to the system.
• Custom Code Snippet Function: The attacker can inject malicious code into the custom code snippet function of the Metersphere system workbench to execute system commands.

Exploitation Methods:

• Reverse-Shell Execution: The attacker can execute a reverse-shell command, allowing them to gain remote access to the system. This can be achieved by crafting a payload that includes the reverse-shell command and injecting it into the custom code snippet function.
• Command Injection: The attacker can inject arbitrary system commands through the vulnerable function, leading to unauthorized actions on the system.

3. Affected Systems and Software Versions

Affected Software:

• Metersphere v1.20.20-lts-79d354a6

Affected Systems:

• Any system running the vulnerable version of Metersphere. This includes servers, workstations, and any other devices where Metersphere is deployed.

4. Recommended Mitigation Strategies

Immediate Actions:

• Patching: Upgrade to a patched version of Metersphere that addresses this vulnerability.
• Network Segmentation: Isolate affected systems from critical networks to limit the potential impact of an attack.
• Access Controls: Implement strict access controls to limit who can access the Metersphere system workbench.

Long-Term Strategies:

• Regular Updates: Ensure that all software, including Metersphere, is regularly updated to the latest versions.
• Security Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate potential vulnerabilities.
• Intrusion Detection: Implement intrusion detection systems (IDS) to monitor for suspicious activity and potential exploitation attempts.

5. Impact on European Cybersecurity Landscape

Regional Impact:

• Critical Infrastructure: Organizations using Metersphere in critical infrastructure sectors (e.g., healthcare, finance, energy) are at high risk.
• Data Breaches: The vulnerability can lead to significant data breaches, impacting confidentiality, integrity, and availability of data.
• Compliance: Organizations may face compliance issues with regulations such as GDPR if sensitive data is compromised.

Economic Impact:

• Financial Losses: Potential financial losses due to data breaches, system downtime, and recovery costs.
• Reputation Damage: Organizations may suffer reputational damage if they are publicly associated with a data breach.

6. Technical Details for Security Professionals

Exploitation Details:

• Payload Crafting: The attacker crafts a payload that includes a reverse-shell command and injects it into the custom code snippet function.
• Command Execution: The injected command is executed on the system, allowing the attacker to gain remote access.

Detection and Response:

• Log Analysis: Monitor system logs for unusual command execution and network traffic indicative of a reverse-shell.
• Behavioral Analysis: Use behavioral analysis tools to detect anomalous activities that may indicate an exploitation attempt.
• Incident Response: Have an incident response plan in place to quickly identify, contain, and mitigate any potential exploitation of this vulnerability.

References:

• Metersphere GitHub Repository
• Hacku.top Vulnerability Report

Aliases:

• CVE-2023-29944
• GSD-2023-29944

Assigner:

• Mitre

EPSS Score:

• 10 (indicating a high likelihood of exploitation)

ENISA ID:

• Product: n/a
• Vendor: n/a

By addressing this vulnerability promptly and implementing robust security measures, organizations can significantly reduce the risk of exploitation and protect their systems and data.