CVE-2019-8982 in Studio
Summary
by MITRE
com/wavemaker/studio/StudioService.java in WaveMaker Studio 6.6 mishandles the studioService.download?method=getContent&inUrl= value, leading to disclosure of local files and SSRF.
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Analysis
by VulDB Data Team • 12/16/2024
The vulnerability identified as CVE-2019-8982 resides within WaveMaker Studio 6.6's StudioService.java component where improper handling of the studioService.download?method=getContent&inUrl= parameter creates a critical security flaw. This issue manifests as a local file disclosure vulnerability that allows attackers to access sensitive files on the server filesystem through a specially crafted request. The vulnerability stems from inadequate input validation and sanitization of the inUrl parameter which is processed without proper restrictions on the file paths that can be accessed.
The technical implementation flaw occurs when the application processes the inUrl parameter through the getContent method, failing to validate or sanitize the input before using it in file system operations. This creates an opportunity for attackers to manipulate the parameter value to traverse the file system and access local files that should remain protected. The vulnerability is particularly concerning because it can be exploited to retrieve configuration files, source code, database credentials, and other sensitive information stored on the server. The issue also enables server-side request forgery attacks where malicious actors can use the vulnerable endpoint to make requests to internal services or external systems that should not be accessible through the exposed interface.
From an operational impact perspective, this vulnerability represents a significant risk to organizations using WaveMaker Studio 6.6 as it provides attackers with unauthorized access to the underlying file system. The local file disclosure can lead to complete system compromise, especially when combined with the SSRF capabilities that allow attackers to probe internal networks and potentially escalate privileges. Security teams face the challenge of identifying and mitigating this vulnerability across their infrastructure, as it can be exploited remotely without requiring authentication. The attack surface expands significantly since the vulnerability exists in a service that may be exposed to untrusted networks or users.
Organizations should implement immediate mitigations including input validation and sanitization of all parameters passed to file system operations, particularly those that handle URL or file path inputs. The implementation should include strict whitelisting of acceptable file paths and removal of any functionality that allows arbitrary file access. Network segmentation and firewall rules should be enforced to limit access to the vulnerable service, while regular security audits should be conducted to identify similar patterns in other applications. This vulnerability aligns with CWE-22 (Improper Limiting of a Pathname to a Restricted Directory) and CWE-918 (Server-Side Request Forgery) categories, and maps to ATT&CK techniques including T1083 (File and Directory Discovery) and T1105 (Remote File Copy) for exploitation purposes. The recommended remediation involves updating to a patched version of WaveMaker Studio or implementing comprehensive input validation and access control mechanisms to prevent unauthorized file system access through the vulnerable endpoint.