CVE-2022-35924

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Summary

CVECVE-2022-35924
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-08-02 18:15:00 UTC
Updated2022-08-10 14:56:00 UTC
DescriptionNextAuth.js is a complete open source authentication solution for Next.js applications. `next-auth` users who are using the `EmailProvider` either in versions before `4.10.3` or `3.29.10` are affected. If an attacker could forge a request that sent a comma-separated list of emails (eg.: `[email protected],[email protected]`) to the sign-in endpoint, NextAuth.js would send emails to both the attacker and the victim's e-mail addresses. The attacker could then login as a newly created user with the email being `[email protected],[email protected]`. This means that basic authorization like `email.endsWith("@victim.com")` in the `signIn` callback would fail to communicate a threat to the developer and would let the attacker bypass authorization, even with an `@attacker.com` address. This vulnerability has been patched in `v4.10.3` and `v3.29.10` by normalizing the email value that is sent to the sign-in endpoint before accessing it anywhere else. We also added a `normalizeIdentifier` callback on the `EmailProvider` configuration, where you can further tweak your requirements for what your system considers a valid e-mail address. (E.g.: strict RFC2821 compliance). Users are advised to upgrade. There are no known workarounds for this vulnerability. If for some reason you cannot upgrade, you can normalize the incoming request using Advanced Initialization.

Risk And Classification

Problem Types: CWE-863

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Nextauth.js Next-auth All All All All

References

ReferenceSourceLinkTags
Sending verification requests (magic link) to unwanted emails · Advisory · nextauthjs/next-auth · GitHub CONFIRM github.com
Email | NextAuth.js MISC next-auth.js.org
fix(providers): add `normalizeIdentifier` to EmailProvider · nextauthjs/next-auth@afb1fcd · GitHub MISC github.com
Initialization | NextAuth.js MISC next-auth.js.org
Callbacks | NextAuth.js MISC next-auth.js.org
Address object :: Nodemailer MISC nodemailer.com
Email address - Wikipedia MISC en.wikipedia.org
Email | NextAuth.js MISC next-auth.js.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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