DIYgod RSSHub Environment Variable package.json TEST_CONTINUE input validation

Summaryinfo

A vulnerability was found in DIYgod RSSHub. It has been rated as critical. This affects an unknown part of the file package.json of the component Environment Variable Handler. The manipulation of the argument TEST_CONTINUE leads to input validation. This vulnerability is documented as CVE-2024-47179. The attack can be initiated remotely. There is not any exploit available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in DIYgod RSSHub (version unknown). It has been rated as critical. This issue affects an unknown function of the file package.json of the component Environment Variable Handler. The manipulation of the argument TEST_CONTINUE with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

RSSHub is an RSS network. Prior to commit 64e00e7, RSSHub's `docker-test-cont.yml` workflow is vulnerable to Artifact Poisoning, which could have lead to a full repository takeover. Downstream users of RSSHub are not vulnerable to this issue, and commit 64e00e7 fixed the underlying issue and made the repository no longer vulnerable. The `docker-test-cont.yml` workflow gets triggered when the `PR - Docker build test` workflow completes successfully. It then collects some information about the Pull Request that triggered the triggering workflow and set some labels depending on the PR body and sender. If the PR also contains a `routes` markdown block, it will set the `TEST_CONTINUE` environment variable to `true`. The workflow then downloads and extracts an artifact uploaded by the triggering workflow which is expected to contain a single `rsshub.tar.zst` file. However, prior to commit 64e00e7, it did not validate and the contents were extracted in the root of the workspace overriding any existing files. Since the contents of the artifact were not validated, it is possible for a malicious actor to send a Pull Request which uploads, not just the `rsshub.tar.zst` compressed docker image, but also a malicious `package.json` file with a script to run arbitrary code in the context of the privileged workflow. As of commit 64e00e7, this scenario has been addressed and the RSSHub repository is no longer vulnerable.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2024-47179 since 09/20/2024. The exploitation is known to be easy. The attack may be initiated remotely. Technical details are known, but no exploit is available.

By approaching the search of inurl:package.json it is possible to find vulnerable targets with Google Hacking.

Applying the patch 64e00e7 is able to eliminate this problem.

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Productinfo

Vendor

• DIYgod

Name

• RSSHub

Website

• Product: https://github.com/DIYgod/RSSHub/

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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