CVE-2021-32017 in AMS
Summary
by MITRE • 08/03/2021
An issue was discovered in JUMP AMS 3.6.0.04.009-2487. A JUMP SOAP endpoint permitted the listing of the content of the remote file system. This can be used to identify the complete server filesystem structure, i.e., identifying all the directories and files.
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Analysis
by VulDB Data Team • 05/30/2025
The vulnerability identified as CVE-2021-32017 affects JUMP AMS version 3.6.0.04.009-2487 and represents a critical information disclosure flaw within the SOAP endpoint implementation. This security weakness allows unauthorized remote attackers to enumerate the complete file system structure of the affected server through a simple SOAP request. The issue stems from insufficient access controls and input validation mechanisms within the web service interface, creating an unintended pathway for attackers to gain comprehensive knowledge of the target system's directory hierarchy and file composition.
This vulnerability directly maps to CWE-200, which describes improper exposure of sensitive information, and falls under the broader category of information disclosure vulnerabilities that can significantly impact system security posture. The flaw enables attackers to perform reconnaissance activities that would typically require more sophisticated techniques or privileged access. The SOAP endpoint in question appears to lack proper authentication mechanisms and authorization checks, allowing any remote entity to query the file system structure without proper verification of credentials or access rights. This type of vulnerability is particularly dangerous because it provides attackers with detailed knowledge of the server's organizational structure, including potential sensitive file locations, directory permissions, and overall system layout.
The operational impact of this vulnerability extends beyond simple information gathering, as it provides attackers with crucial intelligence for subsequent exploitation phases. Once the complete file system structure is known, attackers can identify potential targets for further attacks, locate sensitive configuration files, find backup copies of databases, discover source code repositories, or identify files with weak permissions that could be exploited for privilege escalation. The vulnerability creates a pathway for attackers to map the entire server infrastructure, potentially identifying critical assets, authentication files, or system configuration data that could be leveraged for more advanced attacks. This reconnaissance capability aligns with ATT&CK technique T1083, which covers discovery of file and directory permissions, and T1069, which addresses credential access through system information discovery.
Mitigation strategies for CVE-2021-32017 should focus on implementing proper access controls and authentication mechanisms within the SOAP endpoint. Organizations should immediately restrict access to the SOAP interface using network segmentation, firewall rules, and IP whitelisting to limit exposure to trusted networks only. The implementation of strong authentication mechanisms, including API keys, OAuth tokens, or certificate-based authentication, should be enforced for all SOAP service endpoints. Additionally, input validation and output filtering should be implemented to prevent directory traversal attacks and limit the scope of file system enumeration that can be performed. The system should also be configured to disable unnecessary SOAP endpoints and services, reducing the attack surface. Regular security audits should be conducted to identify and remediate similar vulnerabilities in other web services, and proper logging mechanisms should be implemented to detect and alert on suspicious file system enumeration activities. System administrators should also consider implementing intrusion detection systems that can identify patterns of file system reconnaissance and alert security teams to potential exploitation attempts.