CVE-2021-41109: LiveQuery publishes user session tokens
First published: Thu Sep 30 2021(Updated: )
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to version 4.10.4, for regular (non-LiveQuery) queries, the session token is removed from the response, but for LiveQuery payloads it is currently not. If a user has a LiveQuery subscription on the `Parse.User` class, all session tokens created during user sign-ups will be broadcast as part of the LiveQuery payload. A patch in version 4.10.4 removes session tokens from the LiveQuery payload. As a workaround, set `user.acl(new Parse.ACL())` in a beforeSave trigger to make the user private already on sign-up.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Parseplatform Parse-server | <4.10.4 |
Remedy
https://github.com/parse-community/parse-server/commit/4ac4b7f71002ed4fbedbb901db1f6ed1e9ac5559
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Reference Links
Frequently Asked Questions
What is CVE-2021-41109?
CVE-2021-41109 is a vulnerability in Parse Server, an open-source backend for Node.js, where the session token is not removed from LiveQuery payloads, potentially exposing user data.
What is the severity of CVE-2021-41109?
The severity of CVE-2021-41109 is rated as high with a CVSS score of 7.5.
How does CVE-2021-41109 affect Parse Server?
CVE-2021-41109 affects Parse Server versions up to and excluding 4.10.4 by not removing the session token from LiveQuery payloads, which could lead to unauthorized access to user data.
How can I fix CVE-2021-41109 in Parse Server?
To fix CVE-2021-41109, you should update Parse Server to version 4.10.4 or newer, as this release addresses the vulnerability by removing the session token from LiveQuery payloads.
Are there any references for CVE-2021-41109?
Yes, you can find more information about CVE-2021-41109 in the following references: [GitHub Commit](https://github.com/parse-community/parse-server/commit/4ac4b7f71002ed4fbedbb901db1f6ed1e9ac5559), [Release Notes](https://github.com/parse-community/parse-server/releases/tag/4.10.4), [Security Advisory](https://github.com/parse-community/parse-server/security/advisories/GHSA-7pr3-p5fm-8r9x).
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