Executive Summary
CVSS Score: 9.3 (Critical Vulnerabilities)
Vendor: Hitachi Energy
Affected Product: Service Suite (versions 9.8.1.3 and earlier)
Vulnerabilities: Multiple serious vulnerabilities have been identified, including issues like HTTP Request/Response Smuggling, Integer Overflow, Out-of-Bounds Write, Resource Consumption issues, and more, all of which could severely impact confidentiality, integrity, and availability of affected devices.
Risk Evaluation
Successful exploitation of these vulnerabilities could allow an attacker to compromise the affected systems, leading to unauthorized access or denial of service.
Technical Details
Affected Products: Specific to Hitachi Energy Service Suite, particularly its use of Apache HTTP Server versions 2.4.55 and earlier.
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Use of Less Trusted Source [CWE-348]: Poor header management allows IP-based authentication to be bypassed (CVE-2022-31813, CVSS 9.3).
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HTTP Request/Response Smuggling [CWE-444]: Several configurations are susceptible to this, leading to potential data interception or modification (CVE-2023-25690, CVSS 9.3).
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Integer Overflow [CWE-190]: Affects processing extremely large input buffers, which may lead to crashes or leaks (CVE-2022-28615, CVSS 8.8).
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Out-of-Bounds Write [CWE-787]: Improper handling of HTTP headers can lead to memory corruption (CVE-2006-20001, CVSS 8.7).
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Resource Allocation Without Throttling [CWE-770]: Malicious input to Lua scripts may cause service denial (CVE-2022-29404, CVSS 8.7).
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Sensitive Information Exposure [CWE-200]: Through memory management flaws, sensitive data may become accessible (CVE-2022-30556, CVSS 8.7).
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Improper Resource Shutdown or Release [CWE-404]: Memory may not be released immediately upon connection resets, potentially leading to resource exhaustion (CVE-2023-45802, CVSS 8.2).
- Uncontrolled Resource Consumption [CWE-400]: Attackers can block connections indefinitely, consuming resources similar to a "slow loris" attack pattern (CVE-2023-43622, CVSS 8.7).
Additional Vulnerabilities: Other vulnerabilities include inconsistent handling of headers resulting in incomplete responses (CVE-2023-27522), and various other scenarios that may lead to data leakage, denial of service, or unauthorized data access.
Background
- Critical Infrastructure Sector: Energy
- Global Deployment: Worldwide
- Headquarters: Switzerland
Researcher
This report follows Hitachi Energy’s disclosure of vulnerabilities to CISA.
Mitigations
Users are urged to update to version 9.8.1.4 of the Service Suite. Recommendations from Hitachi Energy include:
- Physical Protection: Ensure that systems are safeguarded from unauthorized access.
- Network Isolation: Separate control systems from other networks and from the Internet.
- Minimize Exposure: Limit the number of ports exposed.
- Security Practices: Follow strict password protocols and scan removable media for threats.
CISA recommends performing a risk assessment and implementing defensive measures to reduce vulnerabilities. This includes understanding targeted cyber intrusion detection methods highlighted in their resources.
Update History
- Initial Publication: May 13, 2025, regarding advisory 8DBD000209.
No known public exploitation of these vulnerabilities has been reported to CISA at this time.