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Why Can't Spring Security Properly Restrict Access Based on User Roles?

Susan Sarandon
Release: 2024-12-13 21:56:17
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Why Can't Spring Security Properly Restrict Access Based on User Roles?

Resolving Role Issues in Spring Security

Issue:

While implementing Spring Security into a project, it's observed that users with only the "user" role can access admin-specific resources. The suspected issue lies within the user authentication query.

Analysis:

The configuration attempts to both authenticate based on in-memory and JDBC. The query for retrieving authorities is configured with "select users_username, roles_id from roles_users where users_username=?" and prefixes roles with "ROLE_".

Cause:

However, the problem stems from a logical error in the order of authorization matchers. The matcher "anyRequest().authenticated()" is wrongly placed before "antMatchers("/users/all").hasRole("admin")", allowing all authenticated users access, regardless of their roles.

Solution:

To address this issue, the authorization rules should be reorganized to follow the order specified in the Spring Security documentation. The modified configuration below corrects the error:

@Override
protected void configure(HttpSecurity http) throws Exception {
    http
        .csrf().disable()      
        .httpBasic()
            .and()
        .authorizeRequests()
            .antMatchers("/users/all").hasRole("admin")
            .anyRequest().authenticated()
            .and()
        .formLogin()
            .and()
        .exceptionHandling().accessDeniedPage("/403");
}
Copy after login

With this modification, only users with the "admin" role will be granted access to "/users/all", and non-admin users will be restricted from accessing protected resources.

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