Setting the X-Content-Type-Options header to "nosniff" in a Spring Boot application: A step-by-step guide

The X-Content-Type-Options header was not configured to 'nosniff', leaving the response vulnerable to MIME-sniffing by older versions of Internet Explorer and Chrome. This could result in the response body being interpreted and displayed incorrectly. However, current (early 2014) and legacy versions of Firefox will respect the declared content type instead of performing MIME-sniffing.

Answer №1

  1. Integrate spring security into your project by adding the following dependencies to your build file (build.gradle):

    compile group: 'org.springframework.boot', name: 'spring-boot-starter-security', version: '2.1.4.RELEASE'

You can also include these dependencies in your pom.xml:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-security</artifactId>
    <version>2.1.2.RELEASE</version>
</dependency>

For more details, you can refer to this link:

  1. Add the following Java code snippet to enable web security:

    import org.springframework.security.config.annotation.web.builders.HttpSecurity;

    import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;

    import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

    @EnableWebSecurity
    public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    
        @Override
        protected void configure(HttpSecurity http) throws Exception {
            http.csrf().disable();
    
        }
    }
    

Before:

Content-Type →application/json;charset=UTF-8
Date →Wed, 15 May 2019 19:05:00 GMT
X-Auth-Token →5178dc4e-eac5-40be-9ded-dcfa85c644b6
X-B3-Spanid →3d9a5b2fd21b075c
X-B3-Traceid →3d9a5b2fd21b075c
X-Vcap-Request-Id →4988b251-c2c5-4c5f-558b-ed6bce724e1f
Content-Length →992

After:

X-B3-TraceId →51e54c950ae24fa1
X-B3-SpanId →51e54c950ae24fa1
X-Content-Type-Options →nosniff
X-XSS-Protection →1; mode=block
Cache-Control →no-cache, no-store, max-age=0, must-revalidate
Pragma →no-cache
Expires →0
X-Frame-Options →DENY
x-auth-token →92195048-341d-48a7-93a6-f6f0446f3f0c
Content-Type →application/json;charset=UTF-8
Transfer-Encoding →chunked
Date →Fri, 17 May 2019 15:50:59 GMT

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