Secure Spring service exporters

org.openrewrite.java.security.spring.InsecureSpringServiceExporter

_The default Java deserialization mechanism is available via ObjectInputStream class. This mechanism is known to be vulnerable. If an attacker can make an application deserialize malicious data, it may result in arbitrary code execution.

Spring’s RemoteInvocationSerializingExporter uses the default Java deserialization mechanism to parse data. As a result, all classes that extend it are vulnerable to deserialization attacks. The Spring Framework contains at least HttpInvokerServiceExporter and SimpleHttpInvokerServiceExporter that extend RemoteInvocationSerializingExporter. These exporters parse data from the HTTP body using the unsafe Java deserialization mechanism.

See the full blog post by Artem Smotrakov on CVE-2016-1000027 from which the above description is excerpted._

Tags

• CVE-2016-1000027

Recipe source

GitHub, Issue Tracker, Maven Central

• groupId: org.openrewrite.recipe

• artifactId: rewrite-java-security

• version: 2.6.0

Usage

This recipe has no required configuration options. It can be activated by adding a dependency on org.openrewrite.recipe:rewrite-java-security:2.6.0 in your build file or by running a shell command (in which case no build changes are needed):

Gradle

1. Add the following to your build.gradle file:

build.gradle

plugins {
    id("org.openrewrite.rewrite") version("6.12.0")
}

rewrite {
    activeRecipe("org.openrewrite.java.security.spring.InsecureSpringServiceExporter")
}

repositories {
    mavenCentral()
}

dependencies {
    rewrite("org.openrewrite.recipe:rewrite-java-security:2.6.0")
}

2. Run gradle rewriteRun to run the recipe.

Gradle init script

1. Create a file named init.gradle in the root of your project.

init.gradle

initscript {
    repositories {
        maven { url "https://plugins.gradle.org/m2" }
    }
    dependencies { classpath("org.openrewrite:plugin:6.12.0") }
}
rootProject {
    plugins.apply(org.openrewrite.gradle.RewritePlugin)
    dependencies {
        rewrite("org.openrewrite.recipe:rewrite-java-security:2.6.0")
    }
    rewrite {
        activeRecipe("org.openrewrite.java.security.spring.InsecureSpringServiceExporter")
    }
    afterEvaluate {
        if (repositories.isEmpty()) {
            repositories {
                mavenCentral()
            }
        }
    }
}

2. Run gradle --init-script init.gradle rewriteRun to run the recipe.

Maven POM

1. Add the following to your pom.xml file:

pom.xml

<project>
  <build>
    <plugins>
      <plugin>
        <groupId>org.openrewrite.maven</groupId>
        <artifactId>rewrite-maven-plugin</artifactId>
        <version>5.29.0</version>
        <configuration>
          <activeRecipes>
            <recipe>org.openrewrite.java.security.spring.InsecureSpringServiceExporter</recipe>
          </activeRecipes>
        </configuration>
        <dependencies>
          <dependency>
            <groupId>org.openrewrite.recipe</groupId>
            <artifactId>rewrite-java-security</artifactId>
            <version>2.6.0</version>
          </dependency>
        </dependencies>
      </plugin>
    </plugins>
  </build>
</project>

2. Run mvn rewrite:run to run the recipe.

Maven Command Line

shell

mvn -U org.openrewrite.maven:rewrite-maven-plugin:run -Drewrite.recipeArtifactCoordinates=org.openrewrite.recipe:rewrite-java-security:RELEASE -Drewrite.activeRecipes=org.openrewrite.java.security.spring.InsecureSpringServiceExporter

Moderne CLI

You will need to have configured the Moderne CLI on your machine before you can run the following command.

shell

mod run . --recipe InsecureSpringServiceExporter

See how this recipe works across multiple open-source repositories

The community edition of the Moderne platform enables you to easily run recipes across thousands of open-source repositories.

Please contact Moderne for more information about safely running the recipes on your own codebase in a private SaaS.

Contributors

Jonathan Schneider, Sam Snyder, Tim te Beek