EUVD-2025-0205

Comprehensive Technical Analysis of EUVD-2025-0205

1. Vulnerability Assessment and Severity Evaluation

Vulnerability Description: The vulnerability in the ismp-grandpa crate of Hyperbridge allows a malicious prover to convince the verifier of the finality of arbitrary headers. This can lead to the theft of funds or the compromise of cross-chain applications.

Severity Evaluation:

• Base Score: 9.3 (CVSS 4.0)
• Vector String: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

The high base score indicates a critical vulnerability. The attack vector (AV:N) is network-based, requiring low complexity (AC:L) and no privileges (PR:N) or user interaction (UI:N). The impact on confidentiality, integrity, and availability is high (VC:H, VI:H, VA:H).

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Network-Based Attacks: The vulnerability can be exploited remotely over the network.
• Malicious Provers: An attacker can act as a malicious prover to convince the verifier of the finality of arbitrary headers.

Exploitation Methods:

• Header Manipulation: The attacker can manipulate headers to deceive the verifier, leading to unauthorized actions such as fund transfers or application compromises.
• Cross-Chain Interference: The attacker can exploit the vulnerability to interfere with cross-chain interoperability, affecting multiple blockchain networks.

3. Affected Systems and Software Versions

Affected Systems:

• Hyperbridge versions prior to 15.0.1.

Software Versions:

• All versions of Hyperbridge before 15.0.1 are vulnerable.

4. Recommended Mitigation Strategies

Immediate Actions:

• Update Software: Upgrade to Hyperbridge version 15.0.1 or later, which includes the fix for this vulnerability.
• Monitor Network Traffic: Implement network monitoring to detect any suspicious activities related to cross-chain communications.

Long-Term Strategies:

• Regular Audits: Conduct regular security audits of blockchain and cross-chain applications.
• Incident Response Plan: Develop and maintain an incident response plan specific to blockchain vulnerabilities.
• User Education: Educate users and developers about the importance of timely updates and security best practices.

5. Impact on European Cybersecurity Landscape

Regulatory Compliance:

• GDPR: The vulnerability could lead to data breaches, impacting GDPR compliance.
• NIS Directive: Organizations must ensure the security of their network and information systems, which includes addressing critical vulnerabilities promptly.

Economic Impact:

• Financial Losses: Theft of funds due to the vulnerability can result in significant financial losses for individuals and organizations.
• Reputation Damage: Compromised cross-chain applications can lead to loss of trust and reputation damage for affected organizations.

Technological Impact:

• Blockchain Integrity: The vulnerability undermines the integrity of blockchain networks, affecting their reliability and security.
• Interoperability Risks: Compromised cross-chain interoperability can disrupt the functioning of multiple blockchain networks.

6. Technical Details for Security Professionals

Vulnerability Details:

• Component: ismp-grandpa crate
• Issue: Malicious prover can convince the verifier of the finality of arbitrary headers.
• Fix: The vulnerability is fixed in Hyperbridge version 15.0.1.

References:

• GitHub Advisory: GHSA-wwx5-gpgr-vxr7
• NVD Entry: CVE-2025-24800
• GitHub Commits:
  • Commit f0e85db718f5165b06585a49b14a66f8ad643aea
  • Commit 04d5be207b082eb61d586d52e1685e2e060347e6
  • Commit 5ca3351a19151f1a439c30d5cbdbfdc72a11f1a8
  • Commit b26894913b301061b07db61af841ca2586415f08

Additional Information:

• ENISA ID Product: [{"id":"a769a53d-88be-363f-99ce-6b2cf9f29c00","product":{"name":"hyperbridge"},"product_version":"< 15.0.1"}]
• ENISA ID Vendor: [{"id":"e7727571-eac1-35ce-9fce-e298a333a621","vendor":{"name":"polytope-labs"}}]

Conclusion

The vulnerability in Hyperbridge's ismp-grandpa crate is critical and requires immediate attention. Organizations using Hyperbridge should upgrade to version 15.0.1 or later to mitigate the risk. Regular security audits, network monitoring, and user education are essential to maintain the security and integrity of blockchain networks. The European cybersecurity landscape must address such vulnerabilities promptly to ensure compliance with regulations and maintain trust in digital systems.