a-blog cms vulnerable to directory traversal


a-blog cms provided by appleple Inc. is a content management system (CMS). a-blog cms contains a directory traversal vulnerability (CWE-22).

Kentaro Ishii of GMO Cybersecurity by Ierae, Inc. 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 6.5 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: None
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 6.8 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: Single Instance
  • Confidentiality Impact: Complete
  • Integrity Impact: None
  • Availability Impact: None
Affected Products

appleple inc.
  • a-blog cms Ver.3.1.x series versions Ver.3.1.9 and earlier
  • a-blog cms Ver.3.0.x series versions Ver.3.0.30 and earlier
  • a-blog cms Ver.2.11.x series versions Ver.2.11.59 and earlier
  • a-blog cms Ver.2.10.x series versions Ver.2.10.51 and earlier

According to the developer, a-blog cms Ver.2.9 and earlier versions which are now unsupported, are affected by the vulnerabilities as well.

A user with editor or higher privilege who can log in to the product may obtain arbitrary files on the server including password files.

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

[Apply the workaround]
Removing the following file may mitigate the impact of this vulnerability.

* php/ACMS/POST/PingWeblogUpdate.php

For more information, refer to the information provided by the developer.
Vendor Information

appleple inc.
CWE (What is CWE?)

  1. Path Traversal(CWE-22) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2024-27279

  1. JVN : JVN#48443978
Revision History

  • [2024/03/08]
      Web page was published