CVE-2017-2101 in AppGoat for Web Application
Summary
by MITRE
Hands-on Vulnerability Learning Tool "AppGoat" for Web Application V3.0.0 and earlier allows remote attackers to bypass authentication to perform arbitrary operations via unspecified vectors.
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Analysis
by VulDB Data Team • 09/21/2020
The vulnerability identified as CVE-2017-2101 affects the Hands-on Vulnerability Learning Tool "AppGoat" version 3.0.0 and earlier, representing a critical authentication bypass flaw that exposes the application to unauthorized remote access. This tool is designed for educational purposes to help security professionals and developers learn about web application vulnerabilities, making the presence of such a flaw particularly concerning as it could undermine the very security concepts it aims to teach. The vulnerability manifests through unspecified vectors that allow remote attackers to circumvent the authentication mechanisms, thereby gaining access to perform arbitrary operations within the application.
The technical nature of this authentication bypass vulnerability places it within the scope of CWE-287, which addresses improper authentication issues in software systems. The flaw likely stems from inadequate session management, weak credential verification processes, or flawed access control implementations that permit unauthorized users to assume legitimate user identities or gain administrative privileges without proper authentication. Given that the vulnerability affects a learning tool, the attack surface may include user account manipulation, data access, or privilege escalation capabilities that could be exploited to compromise the entire application environment.
The operational impact of this vulnerability is significant as remote attackers can exploit it from any location without requiring physical access or local network presence. This characteristic aligns with ATT&CK technique T1078 which covers legitimate credentials usage and privilege escalation. The vulnerability enables attackers to perform arbitrary operations that could include data exfiltration, user account manipulation, system configuration changes, or even complete system compromise depending on the application's architecture and the privileges granted to authenticated users. For an educational tool, this poses a serious risk of exposing sensitive learning materials or compromising the integrity of the training environment.
Mitigation strategies for this vulnerability should focus on implementing robust authentication mechanisms including strong session management, proper credential validation, and comprehensive access control policies. Organizations should ensure that all authentication flows are properly tested and validated, implement multi-factor authentication where possible, and establish regular security assessments to identify similar vulnerabilities. The fix should involve addressing the root cause of the authentication bypass, which may require code-level modifications to strengthen session handling, implement proper input validation, and ensure that all access control decisions are made based on verified user identities. Additionally, implementing proper logging and monitoring capabilities will help detect and respond to exploitation attempts, while regular security updates and patches should be applied to prevent similar vulnerabilities from persisting in the application.