CVE-2024-35219 Scanner

OpenAPI Generator is widely used by developers, organizations, and software engineers to automate the generation of API clients, server stubs, API documentation, and configuration from a standard OpenAPI description. It serves many businesses and open-source projects by providing a toolset that simplifies integrating APIs across various platforms and languages. OpenAPI Generator enhances the ability to efficiently manage and update API specifications, offering features that facilitate seamless API management in an automated fashion. Its functionality supports developers in generating efficient, customizable, and up-to-date code that is ready to integrate with applications, services, or environments. Organizations leverage this tool to maintain consistent API design, improve productivity, and uphold high development standards. Security practices around such tools are critical due to their impact on how services communicate and handle data flows.

An Arbitrary File Read vulnerability allows unauthorized users to access potentially sensitive files on a server. This kind of vulnerability may be exploited by attackers to read files that should not be publicly accessible, which could include configurations, passwords, or database files, among others. Such a flaw usually arises when file paths are improperly validated or when insufficient access controls are in place, granting attackers the ability to specify file paths that the application reads. The exploitation of this vulnerability compromises the confidentiality of the data stored, as unauthorized individuals could glean sensitive or proprietary information. This vulnerability emphasizes the necessity for diligent input validation and proper access control measures to mitigate potential exploitations effectively. Continual updates and patches play a crucial role in preventing such vulnerabilities from being exploited.

The vulnerability in OpenAPI Generator specifically involves inadequate checks on user-provided paths, allowing an attacker to change file paths through manipulated inputs. The vulnerable endpoint is associated with the '/api/gen/clients/csharp' resource, where an attacker can specify an arbitrary 'outputFolder' path. In the workflow of the generator, the tool processes the path in such a manner that files from sensitive directories could be read if the path traversal is not constrained. Attackers can trigger this vulnerability through crafted HTTP requests that pivot through file operations to gain unauthorized file access. The combination of path alteration and lack of access restrictions facilitates the read operations on unintended directories. The issue necessitates code-level remedial action to enhance the validation and constraints around directory or file access.

Exploiting this vulnerability can lead to exposing sensitive files and data on the server, potentially breaching the confidentiality and integrity of the system's information. If a malicious entity accesses unauthorized directories, they can gain insights into critical system configurations, user credentials, or other classified materials. The impact can escalate to broader security breaches, including leveraging accessed data for further exploitation or launching targeted attacks. Organizations may face significant operational disruptions, financial losses, and reputational damage as a result. Securing systems against such vulnerabilities involves tightening the control measures around file operations, reinforcing access permissions, and implementing comprehensive logging and monitoring for anomalous activities.

REFERENCES

• https://www.sonarsource.com/blog/the-power-of-taint-analysis-uncovering-critical-code-vulnerability-in-openapi-generator/
• https://github.com/OpenAPITools/openapi-generator/commit/edbb021aadae47dcfe690313ce5119faf77f800d
• https://github.com/OpenAPITools/openapi-generator/pull/18652
• https://github.com/OpenAPITools/openapi-generator/security/advisories/GHSA-g3hr-p86p-593h
• https://nvd.nist.gov/vuln/detail/CVE-2024-35219