a-blog cms vulnerable to session management


a-blog cms provided by appleple Inc. is a content management system (CMS). a-blog cms contains a vulnerability in session management of the comment functionality.

Yuya Yoshida of Mitsui Bussan Secure Directions, 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 4.8 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 5.8 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Medium
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: None
Affected Products

appleple inc.
  • a-blog cms and earlier


An arbitrary comment posted may be deleted or a commenter's e-mail address may be obtained by an unauthenticated remote attacker.

[Apply the Patch]
Apply the patch according to the information provided by the developer.
If a user has customized a-blog cms, modifying some of the templates may be necessary.
For details, refer to the readme.md contained in the patch.
Vendor Information

appleple inc.
CWE (What is CWE?)

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

  1. CVE-2016-1178

  1. JVN : JVN#03975805
  2. National Vulnerability Database (NVD) : CVE-2016-1178
Revision History

  • [2016/05/16]
      Web page was published
      References : Content was added