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ccaweb.co.jp Improper Access Control vulnerability
Open Bug Bounty ID: OBB-1075319

Security Researcher devl00p Helped patch 2248 vulnerabilities
Received 10 Coordinated Disclosure badges
Received 15 recommendations
, a holder of 10 badges for responsible and coordinated disclosure, found a security vulnerability affecting ccaweb.co.jp website and its users.

Following coordinated and responsible vulnerability disclosure guidelines of the ISO 29147 standard, Open Bug Bounty has:

      a. verified the vulnerability and confirmed its existence;
      b. notified the website operator about its existence.

Technical details of the vulnerability are currently hidden ("On Hold") to give website operator/owner sufficient time to patch the vulnerability without putting any of its systems or users at risk. Once patched, vulnerability details can be publicly disclosed by the researcher in at least 30 days since the submission. If for a reason the vulnerability remains unpatched, its details can be disclosed only 90 days.

Affected Website:ccaweb.co.jp  
Open Bug Bounty Program:Create your bounty program now. It's open and free.
Vulnerable Application:[hidden until disclosure]
Vulnerability Type:IAC (Improper Access Control) / CWE-284
CVSSv3 Score:[hidden until disclosure]
Disclosure Standard:Coordinated Disclosure based on ISO 29147 guidelines
Discovered and Reported by:devl00p Helped patch 2248 vulnerabilities
Received 10 Coordinated Disclosure badges
Received 15 recommendations
Remediation Guide:OWASP Access Control Cheat Sheet

Coordinated Disclosure Timeline

Vulnerability Reported:26 January, 2020 17:35 GMT
Vulnerability Verified:27 January, 2020 08:24 GMT
Website Operator Notified:27 January, 2020 08:24 GMT
a. Using the ISO 29147 guidelines
b. Using publicly available security contacts
c. Using Open Bug Bounty notification framework
d. Using security contacts provided by the researcher
Public Report Published
[without any technical details]:
27 January, 2020 08:24 GMT
Scheduled Public Disclosure:  A security researcher can delete the report before public disclosure, afterwards the report cannot be deleted or modified anymore. The researcher can also postpone public disclosure date as long as reasonably required to remediate the vulnerability.25 April, 2020 17:35 GMT

For Website Operators and Owners

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For remediation best practices, please also refer to OWASP remediation guidelines. More information about coordinate and responsible disclosure on Open Bug Bounty is available here.

DISCLAIMER: As a non-profit project, Open Bug Bounty never acts as an intermediary between website owners and security researchers. Our role is strictly limited to independent verification of the reports and proper notification of website owners by all available means.

ccaweb.co.jp

Website Overview

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SSL/TLS Server Test:N/A    
Web Server Security Test:C+    View Results
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  Recent Recommendations

    8 April, 2020
     jds88y:
Thank you to @singhnitesh21 for reporting and providing prompt and courteous details of a bug on our website, leading to a quick and pain free resolution. Keep up the good work.
    8 April, 2020
     Rumskkurs:
Thank you very much for a report critical vulnerability on our website.
    8 April, 2020
     Hansaplastique:
I can highly recommend working with ELProfesor.
He's knowledgable, very responsive and provides clear information and examples, which helped me resolved the issues.
    7 April, 2020
     Rumskkurs:
Thank you for helping us find security problems on our website!
    7 April, 2020
     Rumskkurs:
Many thanks for the XSS vulnerability reports.