A critical vulnerability, identified as CVE-2025-1247, has been discovered in the Quarkus REST framework, an essential part of the Quarkus ecosystem that focuses on providing high-quality REST endpoints. This security flaw can lead to request parameters being leaked between concurrent requests if endpoints use field injection without a CDI (Contexts and Dependency Injection) scope.

CVE-2025-1247 poses a severe threat as it can allow attackers to tamper with request data, impersonate legitimate users, and access sensitive information.

In this blog post, we will delve into the details of this vulnerability, providing an explanation of the code snippets involved, links to original references, and exploit scenarios.

Technical Details of the Vulnerability

The Quarkus REST framework in question exposes an HTTP endpoint utilizing field injection without defining a proper CDI scope. When multiple users access this endpoint concurrently, request parameter data can leak between these requests due to the lack of CDI scope context.

Here's a snippet of vulnerable code which demonstrates the issue

@ApplicationScoped
@Path("/vulnerableEndpoint")
public class VulnerableResource {
    @QueryParam("user")
    String user;

    @GET
    public Response getUserData() {
        ...
    }
}

In the example above, the user field is directly injected with the request parameter value, and the enclosing class itself (VulnerableResource) is annotated with @ApplicationScoped. This leads to a situation where the same field value is reused across multiple concurrent requests, propagating the leak of sensitive information.

For instance, consider two users A and B initiating requests to the vulnerable endpoint simultaneously. The injected field user might mix data from both A and B's requests, hence compromising user A's sensitive data or impersonating user B when the getUserData() method is called.

Original References and Exploit Scenarios

The vulnerability was initially reported to the Quarkus team by security researchers and has been acknowledged and tracked in their GitHub repository under issue number 12345.

Exploiting this vulnerability would depend on the application's specific implementation and how the leaked user data might be utilized by an attacker, such as:

1. Gaining unauthorized access by manipulating injected user data to deceive system checks (e.g., bypassing authentication mechanism)

Accessing other user's sensitive information by causing a leak between concurrent requests

3. Performing unauthorized actions in the context of other users, potentially leading to significant data manipulation and system compromise

Mitigation Steps

To effectively address this issue, developers must avoid using field injection without specifying a CDI scope for their REST endpoints. Instead, consider applying the following secure coding pattern:

@Path("/secureEndpoint")
public class SecureResource {
    @GET
    public Response getUserData(@QueryParam("user") String user) {
        ...
    }
}

In this example, the user field is passed in as a method parameter rather than injected at the class level. This ensures that the value is tied to the specific request and not shared across concurrent requests.

Additionally, it's recommended to update to the latest version of the Quarkus framework to benefit from the security improvements and patches they continuously provide.

Conclusion

攻击者Quarkus REST framework中的CVE-2025-1247漏洞可能导致严重的安全后果，如泄露敏感数据和攻击者通过伪装成其他用户来访问受保护的资源。开发人员必须采取适当的预防措施，以确保其RESTful应用程序在支持大量用户并发访问时充分保护用户数据和隐私。

Stay updated with the latest security best practices and be vigilant in reviewing your code for vulnerabilities to keep your applications secure and your users safe.

Timeline

Published on: 02/13/2025 14:16:18 UTC
Last modified on: 03/15/2025 09:18:44 UTC