CVE-2023-29019: Session fixation in fastify-passport
First published: Fri Apr 21 2023(Updated: )
@fastify/passport is a port of passport authentication library for the Fastify ecosystem. Applications using `@fastify/passport` in affected versions for user authentication, in combination with `@fastify/session` as the underlying session management mechanism, are vulnerable to session fixation attacks from network and same-site attackers. fastify applications rely on the `@fastify/passport` library for user authentication. The login and user validation are performed by the `authenticate` function. When executing this function, the `sessionId` is preserved between the pre-login and the authenticated session. Network and same-site attackers can hijack the victim's session by tossing a valid `sessionId` cookie in the victim's browser and waiting for the victim to log in on the website. As a solution, newer versions of `@fastify/passport` regenerate `sessionId` upon login, preventing the attacker-controlled pre-session cookie from being upgraded to an authenticated session. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Passport.js | <1.1.0 | |
| Passport.js | >=2.0.0<2.3.0 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2023-29019?
CVE-2023-29019 is classified as a high-severity vulnerability due to its potential to allow attackers to hijack user sessions.
How do I fix CVE-2023-29019?
To fix CVE-2023-29019, upgrade to versions of @fastify/passport greater than 1.1.0 or between 2.0.0 and 2.3.0.
What types of applications are affected by CVE-2023-29019?
Applications that use @fastify/passport for user authentication combined with @fastify/session for session management are affected.
What impact does CVE-2023-29019 have on user sessions?
CVE-2023-29019 allows an attacker to exploit session fixation vulnerabilities, potentially leading to unauthorized access to user accounts.
Are all versions of @fastify/passport vulnerable to CVE-2023-29019?
No, only certain versions prior to 1.1.0 and between 2.0.0 to 2.3.0 are vulnerable to CVE-2023-29019.
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