CVE-2024-24824

描述

### Summary Arbitrary classes can be loaded and instantiated using a HTTP PUT request to the `/api/system/cluster_config/` endpoint. ### Details Graylog's cluster config system uses fully qualified class names as config keys. To validate the existence of the requested class before using them, Graylog loads the class using the class loader. https://github.com/Graylog2/graylog2-server/blob/e458db8bf4f789d4d19f1b37f0263f910c8d036c/graylog2-server/src/main/java/org/graylog2/rest/resources/system/ClusterConfigResource.java#L208-L214 ### PoC A request of the following form will output the content of the `/etc/passwd` file: ``` curl -u admin:<admin-password> -X PUT http://localhost:9000/api/system/cluster_config/java.io.File \ -H "Content-Type: application/json" \ -H "X-Requested-By: poc" \ -d '"/etc/passwd"' ``` To perform the request, authorization is required. Only users posessing the `clusterconfigentry:create` and `clusterconfigentry:edit` permissions are allowed to do so. These permissions are usually only granted to `Admin` users. ### Impact If a user with the appropriate permissions performs the request, arbitrary classes with 1-arg String constructors can be instantiated. This will execute arbitrary code that is run during class instantiation. In the specific use case of `java.io.File`, the behaviour of the internal web-server stack will lead to information exposure by including the entire file content in the response to the REST request. ### Credits Analysis provided by Fabian Yamaguchi - Whirly Labs (Pty) Ltd

如何修補 CVE-2024-24824

要修補 CVE-2024-24824,請將受影響套件升級到下列已修補版本。

• —升級至 5.1.11 或更新版本

CVE-2024-24824 正在被利用嗎?

中等 — EPSS 為 34.5%,可持續追蹤但非最高優先。

受影響套件(1)

• >= 2.0.0, < 5.1.11