Movable Type plugin A-Member and A-Reserve vulnerable to SQL injection


A-Member and A-Reserve provided by ARK-Web co., ltd. are plugins for Movable Type which provide functions to build a membership website or a reservation website. A-Member and A-Reserve contain SQL injection (CWE-89) vulnerability due to the issue in processing cookie values.

Yuuta Watanabe of STNet, Incorporated reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 7.3 (High) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: Low
CVSS V2 Severity:
Base Metrics 7.5 (High) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: Partial
Affected Products

ARK-Web co., ltd
  • A-Member 3.8.6 and earlier (CVE-2017-10898)
  • A-Member for MT cloud 3.8.6 and earlier (CVE-2017-10898)
  • A-Reserve 3.8.6 and earlier (CVE-2017-10899)
  • A-Reserve for MT cloud 3.8.6 and earlier (CVE-2017-10899)


An attacker who can access the web page created by using either A-Member or A-Reserve may obtain or alter information stored in the database.

[Update the Software]
Apply the latest version for the appropriate plugin according to the information provided by the developer.
Vendor Information

ARK-Web co., ltd
CWE (What is CWE?)

  1. SQL Injection(CWE-89) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2017-10898
  2. CVE-2017-10899

  1. JVN : JVN#78501037
  2. National Vulnerability Database (NVD) : CVE-2017-10898
  3. National Vulnerability Database (NVD) : CVE-2017-10899
  4. IPA SECURITY ALERTS : Security Alert for Vulnerability in Movable Type plugin A-Member and A-Reserve (JVN#78501037) (in Japanese)
Revision History

  • [2017/11/30]
      Web page was published
  • [2018/03/14]
      References : Contents were added