Overview
CVE-2025-59702 describes a security vulnerability affecting Entrust nShield Connect XC, nShield 5c, and nShield HSMi devices running firmware versions through 13.6.11 or 13.7. This vulnerability allows a physically proximate attacker with elevated privileges to falsify tamper events by gaining access to internal components of the HSM.
Technical Details
The vulnerability stems from insufficient protection of internal components related to tamper detection within the affected Entrust nShield HSMs. A physically proximate attacker, possessing both physical access to the device and elevated privileges (e.g., knowledge of service credentials or having compromised the host system), can manipulate these internal components in a way that prevents genuine tamper events from being recorded or can inject false tamper events. This could compromise the integrity of the HSM’s secure operations and potentially lead to unauthorized access to sensitive cryptographic keys and data.
CVSS Analysis
Currently, the CVE record indicates that the CVSS score and severity are not yet available (N/A). However, given the potential impact of successful exploitation, which could lead to a complete compromise of the HSM’s security guarantees, a high CVSS score is anticipated once a full analysis is completed.
Possible Impact
Successful exploitation of CVE-2025-59702 could have severe consequences, including:
- Compromise of cryptographic keys stored within the HSM.
- Unauthorized access to sensitive data protected by the HSM.
- Circumvention of security controls and audit logging mechanisms.
- Potential for attackers to perform unauthorized cryptographic operations.
- Loss of trust in the security of systems relying on the affected HSM.
Mitigation and Patch Steps
Entrust has likely released, or will soon release, a security patch to address this vulnerability. It is critical to take the following steps:
- Apply the Latest Security Patch: Immediately update your nShield HSM firmware to the latest available version provided by Entrust. Consult Entrust’s security advisories and release notes for specific instructions.
- Physical Security Review: Reinforce physical security measures surrounding nShield HSMs to prevent unauthorized access.
- Access Control Hardening: Review and strengthen access control policies for systems and personnel with access to the HSMs. Limit access to the absolute minimum required.
- Monitor System Logs: Implement robust monitoring of system logs and security events related to the HSM to detect any signs of suspicious activity or potential compromise.
- Contact Entrust Support: If you have any concerns or questions regarding this vulnerability or the patching process, contact Entrust support for assistance.
