CVE-2025-52101

Comprehensive Technical Analysis of CVE-2025-52101

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2025-52101 CVSS Score: 9.8

The vulnerability in linjiashop versions 0.9 and earlier involves incorrect access control, specifically related to the default-generated JWT (JSON Web Token) authentication mechanism. This flaw allows attackers to bypass authentication and retrieve encrypted "password" and "salt" values, which can then be cracked using brute-force methods.

Severity Evaluation:

• CVSS Base Score: 9.8 (Critical)
• Impact: High
• Exploitability: High

The high CVSS score indicates a critical vulnerability that can lead to significant security breaches, including unauthorized access to sensitive information and potential compromise of user accounts.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

1. Authentication Bypass: Attackers can exploit the incorrect access control to bypass the JWT authentication mechanism.
2. Data Exfiltration: Once authenticated, attackers can retrieve encrypted "password" and "salt" values.
3. Brute-Force Attack: The retrieved encrypted data can be subjected to brute-force cracking to obtain plaintext passwords.

Exploitation Methods:

1. Network Traffic Interception: Attackers may intercept network traffic to capture JWT tokens.
2. Man-in-the-Middle (MitM) Attacks: Attackers can position themselves between the client and server to intercept and manipulate JWT tokens.
3. Credential Stuffing: Once passwords are cracked, attackers can use them to gain unauthorized access to other services where users might reuse the same credentials.

3. Affected Systems and Software Versions

Affected Software:

• linjiashop versions 0.9 and earlier

Affected Systems:

• Any system running the vulnerable versions of linjiashop, including web servers, application servers, and cloud-based deployments.

4. Recommended Mitigation Strategies

1. Update Software: Immediately update to a patched version of linjiashop if available.
2. Implement Strong Access Controls: Ensure that JWT tokens are properly validated and that access controls are correctly configured.
3. Use Strong Encryption: Employ strong encryption algorithms for password storage and ensure that salts are unique and sufficiently random.
4. Regular Security Audits: Conduct regular security audits and penetration testing to identify and mitigate similar vulnerabilities.
5. Monitor for Suspicious Activity: Implement monitoring and logging to detect and respond to any suspicious activity related to JWT authentication.
6. User Education: Educate users about the importance of strong, unique passwords and the risks associated with password reuse.

5. Impact on Cybersecurity Landscape

The discovery of CVE-2025-52101 highlights the critical importance of robust access control mechanisms and secure authentication practices. The vulnerability underscores the need for:

• Enhanced Security Protocols: Organizations must adopt enhanced security protocols for authentication and access control.
• Regular Updates and Patches: Timely updates and patches are essential to mitigate known vulnerabilities.
• Incident Response Plans: Effective incident response plans are crucial for minimizing the impact of security breaches.

6. Technical Details for Security Professionals

Vulnerability Details:

• Incorrect Access Control: The default-generated JWT authentication mechanism in linjiashop versions 0.9 and earlier does not properly enforce access controls, allowing attackers to bypass authentication.
• Data Retrieval: Attackers can retrieve encrypted "password" and "salt" values, which are stored in a manner that allows for brute-force cracking.

Mitigation Steps:

1. Review JWT Implementation: Ensure that the JWT implementation adheres to best practices, including proper validation and secure storage of tokens.
2. Enhance Encryption: Use strong encryption algorithms such as bcrypt or Argon2 for password storage.
3. Implement Rate Limiting: Apply rate limiting to prevent brute-force attacks on authentication endpoints.
4. Regular Security Reviews: Conduct regular security reviews and code audits to identify and address potential vulnerabilities.

References:

• GitHub Gist
• Gitee Repository

By addressing these technical details and implementing the recommended mitigation strategies, organizations can significantly reduce the risk associated with CVE-2025-52101 and enhance their overall cybersecurity posture.