CVE-2023-29019 Session fixation in fastify-passport
Attackers can hijack user sessions by fixing the session ID before login, allowing account takeover in applications using fastify-passport.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-29019?
CVE-2023-29019 is a high-severity authentication bypass vulnerability in fastify-passport, published on 21 Apr 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
@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.
Weakness: CWE-384
Which versions are affected by CVE-2023-29019?
4 open source packages ship an affected version, including @fastify/passport. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
@fastify/passport npm | All versions | 1.1.0 |
@fastify/passport npm | All versions | 1.1.0 |
@fastify/passport npm | From 2.0.0 | 2.3.0 |
@fastify/passport npm | From 2.0.0 | 2.3.0 |
Products include Fastify Passport.
How do I fix CVE-2023-29019?
Upgrade @fastify/passport to a fixed version for your release line: 1.1.0 or 2.3.0.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2023-29019 being exploited?
There is no known exploitation of CVE-2023-29019 in the wild and no public exploit code.
Other vulnerabilities in fastify-passport
Sources
Also known as GHSA-4m3m-ppvx-xgw9.