Description
A mass assignment vulnerability exists in the `/api/invite/:code` endpoint of the mintplex-labs/anything-llm repository, allowing unauthorized creation of high-privileged accounts. By intercepting and modifying the HTTP request during the account creation process via an invitation link, an attacker can add a `role` property with `admin` value, thereby gaining administrative access. This issue arises due to the lack of property allowlisting and blocklisting, enabling the attacker to exploit the system and perform actions as an administrator.
EPSS Score:
0%
Comprehensive Technical Analysis of EUVD-2024-16200
1. Vulnerability Assessment and Severity Evaluation
The vulnerability described in EUVD-2024-16200 is a mass assignment vulnerability in the /api/invite/:code endpoint of the mintplex-labs/anything-llm repository. This vulnerability allows an attacker to create high-privileged accounts by intercepting and modifying HTTP requests during the account creation process. The attacker can add a role property with an admin value, thereby gaining administrative access.
Severity Evaluation:
- CVSS Base Score: 9.1
- CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
The high base score indicates a critical vulnerability due to the following factors:
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): Low (L)
- Privileges Required (PR): None (N)
- User Interaction (UI): None (N)
- Scope (S): Unchanged (U)
- Confidentiality (C): High (H)
- Integrity (I): High (H)
- Availability (A): None (N)
This vulnerability is severe because it allows unauthorized access to administrative functions, potentially leading to significant data breaches and system compromises.
2. Potential Attack Vectors and Exploitation Methods
Attack Vectors:
- Intercepting HTTP Requests: An attacker can use tools like Burp Suite or OWASP ZAP to intercept and modify HTTP requests during the account creation process.
- Man-in-the-Middle (MitM) Attacks: If the communication is not properly secured (e.g., lack of HTTPS), an attacker can perform MitM attacks to intercept and modify the requests.
- Automated Scripts: Attackers can write automated scripts to exploit this vulnerability, making it easier to target multiple instances of the application.
Exploitation Methods:
- Modifying HTTP Requests: The attacker modifies the HTTP request to include a
roleproperty with anadminvalue. - Exploiting Lack of Validation: The lack of property allowlisting and blocklisting in the endpoint allows the attacker to inject unauthorized properties.
3. Affected Systems and Software Versions
Affected Systems:
- Product:
mintplex-labs/anything-llm - Versions: Unspecified versions <1.0.0
Vendor:
- Vendor Name:
mintplex-labs
4. Recommended Mitigation Strategies
- Input Validation: Implement strict input validation to ensure that only allowed properties are processed. Use allowlisting to specify acceptable properties.
- Role-Based Access Control (RBAC): Ensure that roles are assigned based on predefined rules and not directly from user input.
- Secure Communication: Use HTTPS to encrypt communication and prevent MitM attacks.
- Regular Audits: Conduct regular security audits and code reviews to identify and fix similar vulnerabilities.
- Patch Management: Apply the latest patches and updates from the vendor to mitigate known vulnerabilities.
5. Impact on European Cybersecurity Landscape
This vulnerability highlights the importance of secure coding practices and input validation in preventing unauthorized access. Organizations in Europe should prioritize security audits and code reviews to identify and mitigate similar vulnerabilities. The potential for administrative access being compromised underscores the need for robust cybersecurity measures to protect sensitive data and maintain system integrity.
6. Technical Details for Security Professionals
Vulnerability Details:
- Endpoint:
/api/invite/:code - Vulnerable Parameter:
role - Exploit Method: Modify HTTP request to include
role: admin
Mitigation Steps:
- Allowlisting: Implement allowlisting for acceptable properties in the request.
- Blocklisting: Block any properties that are not explicitly allowed.
- RBAC Implementation: Ensure roles are assigned based on predefined rules and not directly from user input.
- Code Review: Conduct thorough code reviews to identify and fix similar vulnerabilities.
- Security Testing: Use automated tools and manual testing to identify and mitigate mass assignment vulnerabilities.
References:
By addressing this vulnerability, organizations can significantly enhance their security posture and protect against unauthorized access and potential data breaches.