baserCMS fails to restrict access permissions


baserCMS is an open-source Contents Management System (CMS). baserCMS contains a vulnerability where user settings may be changed when processing specially crafted request sent by an attacker logged into the system.

Shoji Baba reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V2 Severity:
Base Metrics 5.5 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: Single Instance
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: None
Affected Products

baserCMS Users Community
  • baserCMS 3.0.7 and earlier


User information may be changed to arbitrary values by a logged in attacker that does not have requisite privileges.

[Update the Software]
Update to the latest version according to the information provided by the developer.

[Apply the Patch]
Patches for versions 3.0.0 through 3.0.7 have been released. For more information, refer to "How to Apply the Patches".
Vendor Information

baserCMS Users Community
CWE (What is CWE?)

  1. Permissions(CWE-264) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2015-5640

  1. JVN : JVN#04855224
  2. National Vulnerability Database (NVD) : CVE-2015-5640
Revision History

  • [2015/09/30]
      Web page was published
      References : Content was added