[Japanese]

JVNDB-2021-000097

Multiple vulnerabilities in CLUSTERPRO X and EXPRESSCLUSTER X

Overview

CLUSTERPRO X and EXPRESSCLUSTER X provided by NEC Corporation contain multiple vulnerabilities listed below.

* Buffer overflow in the Disk Agent (CWE-119) - CVE-2021-20700, CVE-2021-20701
* Buffer overflow in the Transaction Server (CWE-119) - CVE-2021-20702, CVE-2021-20703
* Buffer overflow in the compatible API with previous versions (Ver 8.0 and earlier) (CWE-119) - CVE-2021-20704
* Remote file upload in the WebManager (CWE-20) - CVE-2021-20705, CVE-2021-20706
* Read files in the Transaction Server (CWE-20) - CVE-2021-20707

NEC Corporation reported these vulnerabilities to JPCERT/CC to notify users of the solutions 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 9.8 (Critical) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High
CVSS V2 Severity:
Base Metrics 10.0 (High) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: Complete
  • Integrity Impact: Complete
  • Availability Impact: Complete
The above CVSS base scores have been assigned for CVE-2021-20700, CVE-2021-20701


CVSS V3 Severity:
Base Metrics 9.8 (Critical) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High
CVSS V2 Severity:
Base Metrics 10.0 (High) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: Complete
  • Integrity Impact: Complete
  • Availability Impact: Complete
The above CVSS base scores have been assigned for CVE-2021-20702, CVE-2021- 20703


CVSS V3 Severity:
Base Metrics 9.8 (Critical) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High
CVSS V2 Severity:
Base Metrics 10.0 (High) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: Complete
  • Integrity Impact: Complete
  • Availability Impact: Complete
The above CVSS base scores have been assigned for CVE-2021-20704


CVSS V3 Severity:
Base Metrics 7.5 (High) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: None
  • Integrity Impact: High
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 7.8 (High) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: Complete
  • Availability Impact: None
The above CVSS base scores have been assigned for CVE-2021-20705, CVE-2021-20706


CVSS V3 Severity:
Base Metrics 7.5 (High) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: None
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 7.8 (High) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: Complete
  • Integrity Impact: None
  • Availability Impact: None
The above CVSS base scores have been assigned for CVE-2021-20707
Affected Products


NEC Corporation
  • EXPRESSCLUSTER X 4.3 for Windows and later (CLUSTERPRO X 4.3 for Windows and later)
  • EXPRESSCLUSTER X 4.3 SingleServerSafe for Windows and later (CLUSTERPRO X 4.3 SingleServerSafe for Windows and later)

Impact

* Receiving a specially crafted packet sent by a remote attacker may allow arbitrary code execution - CVE-2021-20700, CVE-2021-20701, CVE-2021-20702, CVE-2021-20703, CVE-2021-20704
* A specially crafted upload request sent by a remote attacker may be accepted - CVE-2021-20705, CVE-2021-20706
* Receiving specially crafted packet sent by a remote attacker may allow an arbitrary file being read - CVE-2021-20707
Solution

[Apply Workarounds]
Update the software to the latest version according to the information provided by the developer.
The developer has released the following updates for CLUSTERPRO X and EXPRESSCLUSTER X that address the vulnerabilities.
  • CLUSTERPRO X 4.3 for Windows additional update (CPRO-XWA40-13)

  • CLUSTERPRO X SingleServerSafe 4.3 for Windows additional update (CPRO-XWA40-13)


[Apply Workarounds]
Apply the following workarounds to avoid the impacts of these vulnerabilities.

  • Enable a firewall and block unnecesary communication

    • Allow only hosts belonging to the cluster to accept connection requests for the following ports:

      • Data transfer (Default: 29002)

      • Communication between disk agents (Default: 29004)


    • Allow only trusted clients to accept connection requests for the following port:

      • HTTP port of WebManager (Default: 29003)


    • Allow only local hosts to accept connection requests for the process
      clpoldapi.exe

Vendor Information

NEC Corporation
CWE (What is CWE?)

  1. Buffer Errors(CWE-119) [IPA Evaluation]
  2. Improper Input Validation(CWE-20) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2021-20700
  2. CVE-2021-20701
  3. CVE-2021-20702
  4. CVE-2021-20703
  5. CVE-2021-20704
  6. CVE-2021-20705
  7. CVE-2021-20706
  8. CVE-2021-20707
References

  1. JVN : JVN#69304877
Revision History

  • [2021/10/29]
      Web page was published
  • [2021/11/10]
      Affected Products : Products were added
      Solution was modified
  • [2021/11/30]
      Affected Products : Products were added
      Solution was modified