Horizon Alert
Summary of the vulnerability and why it matters
This advisory details a vulnerability in Orval, a tool used for generating type-safe JavaScript clients from API specifications. The issue involves an unescaped character that could allow for code execution within development or build environments when specific functions are invoked. While the tool itself is not typically internet-facing, the impact could affect the integrity of development pipelines and applications.
- Developers' code generation tools can be compromised.
- Vulnerability impacts development and build environments.
- Confirm relevance and exposure for development tools.
Attack Path
How an attacker could exploit the issue
An attacker could compromise a developer's machine or CI/CD pipeline by providing a malicious OpenAPI or Swagger specification. When Orval processes this specification to generate type-safe clients, an unescaped backtick within the server URL can lead to the evaluation of attacker-controlled JavaScript. This allows for code execution within the environment where Orval is run.
- Requires a malicious API specification.
- Triggered when generating clients from spec.
- Leads to code execution in development environments.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability could allow attackers to execute arbitrary code when generated client functions are called, impacting the integrity and availability of the developer, CI, test, or application environments. This occurs when the `output.baseUrl.getBaseUrlFromSpecification` option is enabled without safe encoding, leading to the evaluation of unescaped JavaScript.
- Developer or application environment integrity.
- Arbitrary code execution via generated functions.
- Compromised build or test pipelines.
Operational Fix
Recommended remediation, mitigation, and detection steps
The development tool Orval, used for generating type-safe JavaScript clients, has a vulnerability that could lead to code execution in developer, CI, or application environments if not properly encoded. This impacts the code generation process itself, meaning that teams responsible for software development pipelines, build processes, or application codebases are most likely to be affected. The first practical step is to identify where Orval is used within these environments, assess the risk of exploitation, and confirm ownership before planning remediation.
- Development and CI/CD teams own the issue.
- Verify Orval's usage and reachability in build pipelines.
- Plan remediation based on risk and ownership.
