CVE-2025-27595

Remediation/Mitigation Strategy for CVE-2025-27595

Vulnerability Description:

The SICK AG device uses a weak hashing algorithm to generate password hashes. This allows an attacker to easily calculate a matching password from the stored hash. Compromising the password compromises the security and integrity of the device.

CVE ID: CVE-2025-27595

Severity:

  • CVSS Score: 9.8 (Critical)
  • CVSS Vector: Based on the CVSS score and the description, the likely vector includes:
    • CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    • This translates to:
      • AV:N (Network): The vulnerability can be exploited over the network.
      • AC:L (Low): The attack complexity is low.
      • PR:N (None): No privileges are required to exploit the vulnerability.
      • UI:N (None): No user interaction is required.
      • S:U (Unchanged): The vulnerability affects only the impacted component.
      • C:H (High): There is a high impact to confidentiality.
      • I:H (High): There is a high impact to integrity.
      • A:H (High): There is a high impact to availability.

Impact:

  • Compromised Device Access: An attacker can gain unauthorized access to the device.
  • Data Breach: Sensitive data stored on or accessible through the device could be exposed.
  • Device Manipulation: An attacker could modify device settings, configurations, or firmware.
  • Denial of Service (DoS): An attacker could disrupt the normal operation of the device.
  • Lateral Movement: If the device is connected to a network, an attacker could use it as a pivot point to gain access to other systems.

Known Exploits:

While the specific exploit details are not provided, the description clearly states the weak hashing algorithm makes it easy to calculate the password. This likely means:

  • Rainbow Table Attacks: Pre-computed tables of hashes can be used to quickly find the corresponding password.
  • Dictionary Attacks: Common password lists are hashed using the same weak algorithm and compared against the stored hash.
  • Brute-Force Attacks: An attacker can try all possible password combinations until a match is found (while more computationally expensive, it’s feasible with a weak hashing algorithm).

Remediation/Mitigation Strategy:

The primary goal is to replace the weak hashing algorithm with a strong, modern alternative.

  1. Patch Availability and Implementation (Priority 1 - Immediate Action):

    • Contact SICK AG Immediately: Request a firmware update or patch that addresses CVE-2025-27595. Escalate the issue given the criticality of the vulnerability.
    • Monitor SICK AG’s Website/Security Advisories: Regularly check for updates and security bulletins from SICK AG.
    • Apply the Patch Immediately: As soon as a patch is available, schedule and implement it according to SICK AG’s instructions. Follow a proper change management process.
    • Test the Patch: Thoroughly test the patched device in a non-production environment before deploying it to production to ensure it resolves the vulnerability and does not introduce any new issues.

  2. Password Reset (Priority 2 - Immediate Action, after confirmation from Vendor):

    • Force Password Reset: After applying the patch, force all users to reset their passwords. Ensure users choose strong, unique passwords that adhere to a defined password policy (see below).
    • Consider Two-Factor Authentication (2FA): If the device supports it, enable 2FA to add an additional layer of security. Even with a compromised password, an attacker would need a second factor to gain access.

  3. Network Segmentation (Priority 3 - Short-Term Action):

    • Isolate the Device: If possible, isolate the SICK AG device on a separate network segment with restricted access to other systems. This will limit the potential impact if the device is compromised.
    • Implement Firewall Rules: Configure firewall rules to allow only necessary network traffic to and from the device. Block all other traffic.
    • Monitor Network Traffic: Monitor network traffic to and from the device for suspicious activity.

  4. Password Policy Enforcement (Priority 4 - Long-Term Action):

    • Enforce Strong Passwords: Implement a strong password policy that requires users to create passwords that are:
      • At least 12 characters long.
      • Include a mix of uppercase and lowercase letters, numbers, and symbols.
      • Not based on personal information or easily guessed words.
      • Changed regularly (e.g., every 90 days).
    • Password Complexity Checker: Integrate a password complexity checker to prevent users from creating weak passwords.
    • Password History: Prevent users from reusing previous passwords.

  5. Vulnerability Scanning (Priority 5 - Ongoing Action):

    • Regularly Scan the Device: Use a vulnerability scanner to regularly scan the device for other known vulnerabilities.
    • Stay Up-to-Date: Keep the vulnerability scanner’s database updated with the latest vulnerability information.

  6. Logging and Monitoring (Priority 6 - Ongoing Action):

    • Enable Logging: Ensure that logging is enabled on the device and that logs are being collected and monitored.
    • Monitor for Suspicious Activity: Monitor the logs for suspicious activity, such as failed login attempts or unusual network traffic.
    • SIEM Integration: Integrate the device’s logs with a Security Information and Event Management (SIEM) system for centralized monitoring and analysis.

  7. Vendor Communication (Priority 7 - Ongoing Action):

    • Maintain Communication with SICK AG: Maintain open communication with SICK AG to stay informed about security updates and best practices.
    • Provide Feedback: Provide feedback to SICK AG about the vulnerability and the effectiveness of their remediation efforts.

Rollback Plan:

  • Before applying any patches or configuration changes, create a backup of the device’s configuration.
  • If the patch causes any issues, revert to the previous configuration using the backup.
  • Document the rollback process and any lessons learned.

Note: This strategy is a general guideline. The specific steps required will depend on the specific SICK AG device and its operating environment. Always consult the device’s documentation and SICK AG’s security advisories for specific instructions. It is critical to test any changes in a non-production environment before deploying them to production.

Assigner

Date

  • Published Date: 2025-03-14 13:15:41
  • Updated Date: 2025-03-14 13:15:41

More Details

CVE-2025-27595