CVE-2024-11023: Firebase JavaScript SDK allows attackers to manipulate the "_authTokenSyncURL" to point to their own server

November 18, 2024

Firebase JavaScript SDK utilizes a “FIREBASE_DEFAULTS” cookie to store configuration data, including an “_authTokenSyncURL” field used for session synchronization. If this cookie field is preset via an attacker by any other method, the attacker can manipulate the “_authTokenSyncURL” to point to their own server and it would allow am actor to capture user session data transmitted by the SDK. We recommend upgrading Firebase JS SDK at least to 10.9.0.

References

firebase.google.com/support/release-notes/js
github.com/advisories/GHSA-3wf4-68gx-mph8
github.com/firebase/firebase-js-sdk
github.com/firebase/firebase-js-sdk/commit/245dd26e19b6c16aca7e1b7e597ed5784c2984ba
github.com/firebase/firebase-js-sdk/pull/8056
nvd.nist.gov/vuln/detail/CVE-2024-11023

Code Behaviors & Features

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