EasyCTF vulnerable to session management


EasyCTF is a server side CGI used to score CTF (Capture The Flag). EasyCTF contains a vulnerability in session management (CWE-639).

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 5.0 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: None
  • Availability Impact: None
Affected Products

Hiroaki Sakai
  • EasyCTF -1.3 and earlier


A remote attacker without login credentials may log in. As a result, information may be disclosed.

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

Hiroaki Sakai
CWE (What is CWE?)

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

  1. CVE-2015-0914

  1. JVN : JVN#96439865
  2. National Vulnerability Database (NVD) : CVE-2015-0914
Revision History

  • [2015/05/01]
      Web page was published
      References : Content was added