Hands-on Vulnerability Learning Tool "AppGoat" vulnerable to authentication bypass


AppGoat provided by INFORMATION-TECHNOLOGY PROMOTION AGENCY, JAPAN (IPA) is a hands-on vulnerability learning tool. Hands-on Vulnerability Learning Tool "AppGoat" for Web Application contains an authentication bypass vulnerability.

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

Base Metrics: 7.5 (High) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: Partial

CVSS V3 Severity:
Base Metrics: 7.3 (High) [IPA Score]
  • Access Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: Low
Affected Products

Information-technology Promotion Agency
  • Hands-on Vulnerability Learning Tool "AppGoat" for Web Application V3.0.0 and earlier


A remote unauthenticated attacker may perform an arbitrary operation.

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

Information-technology Promotion Agency
CWE (What is CWE?)

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

  1. CVE-2017-2101

  1. JVN : JVN#88176589
Revision History

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