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HTTP Request Header Injection Affecting io.micronaut:micronaut-http-client Open this link in a new tab package, versions [,1.2.11) [1.3.0,1.3.2)

0.0
medium

  • Exploit Maturity

    Proof of concept

  • Attack Complexity

    High

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  • snyk-id

    SNYK-JAVA-IOMICRONAUT-561342

  • published

    26 Mar 2020

  • disclosed

    26 Mar 2020

  • credit

    Jonathan Leitschuh

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Introduced: 26 Mar 2020

CVE-2020-7611 Open this link in a new tab
CWE-113 Open this link in a new tab
First added by Snyk

How to fix?

Upgrade io.micronaut:micronaut-http-client to version 1.2.11, 1.3.2 or higher.

Overview

io.micronaut:micronaut-http-client is a modern, JVM-based, full stack microservices framework designed for building modular, easily testable microservice applications.

Affected versions of this package are vulnerable to HTTP Request Header Injection due to not validating request headers passed to the client.

PoC by Jonathan Leitschuh 

@Controller("/hello")
public class HelloController {

    @Inject
    @Client("/")
    RxHttpClient client;

    @Get("/external-exploit")
    @Produces(MediaType.TEXT_PLAIN)
    public String externalExploit(@QueryValue("header-value") String headerValue) {
        return client.toBlocking().retrieve(
            HttpRequest.GET("/hello")
                .header("Test", headerValue)
        );
    }
}