CVE-2023-27490 Missing proper state, nonce and PKCE checks for OAuth authentication in next-auth
Attackers can bypass OAuth security checks to log in as victims by intercepting or manipulating authorization URLs in next-auth applications.
- 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-2023-27490?
CVE-2023-27490 is a high-severity authentication bypass vulnerability in nextauthjs next-auth, published on 9 Mar 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
NextAuth.js is an open source authentication solution for Next.js applications. `next-auth` applications using OAuth provider versions before `v4.20.1` have been found to be subject to an authentication vulnerability. A bad actor who can read traffic on the victim's network or who is able to social engineer the victim to click a manipulated login link could intercept and tamper with the authorization URL to **log in as the victim**, bypassing the CSRF protection. This is due to a partial failure during a compromised OAuth session where a session code is erroneously generated. This issue has been addressed in version 4.20.1. Users are advised to upgrade. Users unable to upgrade may using Advanced Initialization, manually check the callback request for state, pkce, and nonce against the provider configuration to prevent this issue. See the linked GHSA for details.
Which versions are affected by CVE-2023-27490?
2 open source packages ship an affected version, including next-auth. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
next-auth npm | All versions | 4.20.1 |
next-auth npm | All versions | 4.20.1 |
Products include Nextauth.js Next-Auth.
How do I fix CVE-2023-27490?
Upgrade next-auth to 4.20.1 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2023-27490 being exploited?
There is no known exploitation of CVE-2023-27490 in the wild and no public exploit code.
Other vulnerabilities in nextauthjs next-auth
- CVE-2022-35924 Verification requests (magic link) sent to unwanted emails
- CVE-2022-31093 Improper Handling of `callbackUrl` parameter in next-auth
- CVE-2022-31127 Improper handling of email input in next-auth
- CVE-2022-39263 NextAuth.js Upstash Adapter missing token verification
- CVE-2022-29214 URL Redirection to Untrusted Site ('Open Redirect') in next-auth
Sources
Also known as GHSA-7r7x-4c4q-c4qf.