EUVD-2025-6438

Comprehensive Technical Analysis of EUVD-2025-6438

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-6438 pertains to the use of a weak hashing algorithm for password storage in the SICK DL100-2xxxxxxx device. This weakness allows attackers to easily calculate matching passwords, thereby compromising the security and integrity of the device.

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 highlights the following characteristics:

• 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 Impact (C): High (H)
• Integrity Impact (I): High (H)
• Availability Impact (A): High (H)

This high score underscores the significant risk posed by this vulnerability, as it can be exploited remotely with low complexity and without requiring any user interaction or special privileges.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Exploitation: Given the network attack vector, an attacker can exploit this vulnerability over the network without needing physical access to the device.
• Password Cracking: The use of a weak hashing algorithm makes it feasible for attackers to perform brute-force or dictionary attacks to crack passwords.

Exploitation Methods:

• Brute-Force Attack: Attackers can use automated tools to systematically try all possible password combinations until the correct one is found.
• Dictionary Attack: Attackers can use a predefined list of common passwords to guess the correct password.
• Rainbow Table Attack: Precomputed tables for reversing cryptographic hash functions can be used to quickly find the original password.

3. Affected Systems and Software Versions

Affected Systems:

• Product: SICK DL100-2xxxxxxx
• Versions: All versions

Vendor:

• Name: SICK AG

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Password Policy Enforcement: Implement strong password policies that enforce the use of complex passwords.
• Hashing Algorithm Upgrade: Upgrade the hashing algorithm to a more secure one, such as bcrypt, Argon2, or PBKDF2.
• Network Segmentation: Isolate the affected devices from the broader network to limit potential attack vectors.
• Monitoring and Logging: Enhance monitoring and logging to detect any unusual activity that may indicate an attempted exploitation.

Long-Term Mitigation:

• Firmware Update: Apply vendor-provided firmware updates that address this vulnerability.
• Regular Audits: Conduct regular security audits to identify and mitigate similar vulnerabilities in the future.
• User Training: Educate users on the importance of strong passwords and the risks associated with weak passwords.

5. Impact on European Cybersecurity Landscape

The vulnerability in the SICK DL100-2xxxxxxx device poses a significant risk to European cybersecurity, particularly in industrial control systems (ICS) and operational technology (OT) environments. The potential for remote exploitation and the high impact on confidentiality, integrity, and availability make this a critical concern for organizations relying on these devices.

Regulatory Compliance:

• Organizations must ensure compliance with relevant European regulations, such as the NIS Directive, which mandates robust cybersecurity measures for critical infrastructure.

Industry-Wide Implications:

• The vulnerability highlights the need for stronger cybersecurity practices in the manufacturing and industrial sectors, where such devices are commonly used.

6. Technical Details for Security Professionals

Technical Overview:

• Weak Hashing Algorithm: The device uses a weak hashing algorithm (e.g., MD5, SHA-1) for password storage, which is susceptible to various attack methods.
• Exploitation Tools: Attackers may use tools like Hashcat, John the Ripper, or custom scripts to perform brute-force or dictionary attacks.

Detection and Response:

• Intrusion Detection Systems (IDS): Deploy IDS to detect unusual network traffic that may indicate an attempted exploitation.
• Incident Response Plan: Develop and implement an incident response plan to quickly address any detected exploitation attempts.

References:

• Vendor Advisory: SICK AG PSIRT
• Technical Documentation: Special Information CYBERSECURITY BY SICK
• CISA Recommendations: ICS Recommended Practices
• CVSS Calculator: CVSS 3.1 Calculator
• Vendor CSAF: SICK CSAF
• NVD Entry: CVE-2025-27595

By addressing this vulnerability promptly and comprehensively, organizations can mitigate the risk of unauthorized access and ensure the security and integrity of their systems.