CLUSTERPRO X and EXPRESSCLUSTER X vulnerable to XML external entity injection (XXE)


CLUSTERPRO X and EXPRESSCLUSTER X provided by NEC Corporation contain an XML external entity injection (XXE) vulnerability (CWE-611).

NEC Corporation reported this vulnerability to IPA to notify users of its solution through JVN. JPCERT/CC and NEC Corporation coordinated under the Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 5.8 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Changed
  • Confidentiality Impact: Low
  • Integrity Impact: None
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 5.0 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: None
  • Availability Impact: None
Affected Products

NEC Corporation
  • EXPRESSCLUSTER X 4.2 for Windows and earlier


By reading a specially crafted XML files, an arbitrary file on the server may be read by the attacker.

[Update the Software]
The following updates are available. Update the software to the appropriate versions according to the information provided by the developer.
* CLUSTERPRO X 4.1/X 4.2 for Windows update module (CPRO-XWA40-08)
* EXPRESSCLUSTER X 4.1/X 4.2 for Windows update module (CPRO-XWA40-08E)

[Apply a Workaround]
Applying the following workarounds may mitigate the impacts of this vulnerability.
*Enable access restriction by IP address
*Enable access restriction by password
*Enable connection by HTTPS
Vendor Information

NEC Corporation
CWE (What is CWE?)

  1. No Mapping(CWE-Other) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2020-17408

  1. JVN : JVN#06446084
Revision History

  • [2020/08/31]
      Web page was published