CVE-2017-2099 in AppGoat for Web Application
Summary
by MITRE
Hands-on Vulnerability Learning Tool "AppGoat" for Web Application V3.0.0 and earlier allows remote code execution via unspecified vectors.
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Analysis
by VulDB Data Team • 09/21/2020
The vulnerability identified as CVE-2017-2099 resides within the Hands-on Vulnerability Learning Tool known as AppGoat version 3.0.0 and earlier releases. This web application security training platform is designed to provide educational environments for learning about common web application vulnerabilities, but it inadvertently contains a critical flaw that allows remote code execution. The vulnerability exists in the application's handling of user input and processing mechanisms that fail to properly validate or sanitize data before execution, creating a pathway for malicious actors to inject and execute arbitrary code on the target system. This represents a severe security flaw that directly violates fundamental web application security principles and practices.
The technical nature of this vulnerability stems from insufficient input validation and sanitization processes within the AppGoat platform. Attackers can exploit unspecified vectors to manipulate application behavior and gain unauthorized code execution capabilities. The flaw likely manifests through improper handling of user-supplied data in web forms, API endpoints, or parameter processing mechanisms that do not adequately filter or escape input before it is processed by the application's backend components. This vulnerability aligns with CWE-94, which describes the weakness of allowing code to be executed in a web application, and represents a direct violation of the principle of least privilege and input validation best practices. The attack surface is particularly concerning given that this is a learning tool that would typically be accessible to multiple users and potentially deployed in educational or testing environments.
The operational impact of this vulnerability is significant and multifaceted across various security domains. Remote code execution capabilities allow attackers to completely compromise the affected system, potentially leading to data breaches, system takeover, and further lateral movement within network environments. In an educational context, this vulnerability poses risks not only to the platform itself but also to the broader network infrastructure where it might be deployed. The implications extend beyond simple exploitation as attackers could leverage this vulnerability to establish persistent access, exfiltrate sensitive information, or use the compromised system as a launch point for attacks against other systems. This aligns with ATT&CK technique T1059, which covers command and scripting interpreter, and represents a critical threat to the integrity and confidentiality of the system's data and operations.
Mitigation strategies for CVE-2017-2099 should prioritize immediate remediation through software updates and patches provided by the vendor. Organizations utilizing this learning platform must ensure they are running version 3.0.1 or later where the vulnerability has been addressed. Beyond patching, network segmentation and access controls should be implemented to limit exposure of the vulnerable application to unauthorized users. Input validation mechanisms should be strengthened throughout the application to prevent malicious data injection, and regular security assessments should be conducted to identify similar vulnerabilities. The implementation of web application firewalls and runtime application self-protection measures can provide additional layers of defense. Security monitoring and incident response procedures should be enhanced to detect potential exploitation attempts, and comprehensive security awareness training should be provided to users of the platform to prevent accidental exposure through improper usage patterns.