[Japanese]

JVNDB-2021-000100

Multiple vulnerabilities in EC-CUBE 2 series

Overview

EC-CUBE 2 series provided by EC-CUBE CO.,LTD. contains multiple vulnerabilities listed below.
* Improper access control in Management screen (CWE-284) - CVE-2021-20841
* Cross-site request forgery vulnerability in Management screen (CWE-352) - CVE-2021-20842

EC-CUBE CO.,LTD. reported these vulnerabilities to JPCERT/CC to notify users of the solution through JVN. JPCERT/CC and EC-CUBE CO.,LTD. coordinated under the Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 4.3 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: None
  • Integrity Impact: Low
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 4.0 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: Single Instance
  • Confidentiality Impact: None
  • Integrity Impact: Partial
  • Availability Impact: None
The above CVSS base scores have been assigned for 2021-20841

CVSS V3 Severity:
Base Metrics: 6.5 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
  • Confidentiality Impact: None
  • Integrity Impact: High
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics: 2.6 (Low) [IPA Score]
  • Access Vector: Network
  • Access Complexity: High
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: Partial
  • Availability Impact: None
The above CVSS base scores have been assigned for CVE-2021-20842
Affected Products


EC-CUBE CO.,LTD.
  • EC-CUBE 2.11.2 to 2.17.1 (EC-CUBE 2 series) (CVE-2021-20841)
  • EC-CUBE 2.11.0 to 2.17.1 (EC-CUBE 2 series) (CVE-2021-20842)

Impact

* A user who can log in to the product may alter System settings without the appropriate privilege - CVE-2021-20841
* If a user with an administrative privilege views a malicious page while logged in, Administrator may be deleted - CVE-2021-20842
Solution

[Update the Softwere]
Update the software according to the information provided by the developer.
The developer has released EC-CUBE 2.17.2 that addresses these vulnerabilities.

[Apply the Patch]
Apply the hotfix patch according to the information provided by the developer.

[Apply the Workaround]
CVE-2021-20841
Applying the following workaround may mitigate the impact of this vulnerability.
* Change the value of mtb_permission to the directory name of Management screen URL
For more information, refer to the information provided by the developer.
Vendor Information

EC-CUBE CO.,LTD.
CWE (What is CWE?)

  1. Permissions(CWE-264) [IPA Evaluation]
  2. Cross-Site Request Forgery(CWE-352) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2021-20841
  2. CVE-2021-20842
References

  1. JVN : JVN#75444925
  2. National Vulnerability Database (NVD) : CVE-2021-20841
  3. National Vulnerability Database (NVD) : CVE-2021-20842
Revision History

  • [2021/11/11]
      Web page was published

Date Public2021/11/11
Date First Published2021/11/11
Date Last Updated2021/11/11