CVE-2023-29020

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Summary

CVECVE-2023-29020
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-04-21 23:15:00 UTC
Updated2023-05-03 14:42:00 UTC
Description@fastify/passport is a port of passport authentication library for the Fastify ecosystem. The CSRF (Cross-Site Request Forger) protection enforced by the `@fastify/csrf-protection` library, when combined with `@fastify/passport` in affected versions, can be bypassed by network and same-site attackers. `fastify/csrf-protection` implements the synchronizer token pattern (using plugins `@fastify/session` and `@fastify/secure-session`) by storing a random value used for CSRF token generation in the `_csrf` attribute of a user's session. The `@fastify/passport` library does not clear the session object upon authentication, preserving the `_csrf` attribute between pre-login and authenticated sessions. Consequently, CSRF tokens generated before authentication are still valid. Network and same-site attackers can thus obtain a CSRF token for their pre-session, fixate that pre-session in the victim's browser via cookie tossing, and then perform a CSRF attack after the victim authenticates. As a solution, newer versions of `@fastify/passport` include the configuration options: `clearSessionOnLogin (default: true)` and `clearSessionIgnoreFields (default: ['passport', 'session'])` to clear all the session attributes by default, preserving those explicitly defined in `clearSessionIgnoreFields`.

Risk And Classification

Problem Types: CWE-352

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Fastify Passport All All All All

References

ReferenceSourceLinkTags
Cross-Site Request Forgery Prevention - OWASP Cheat Sheet Series MISC cheatsheetseries.owasp.org
CSRF token fixation in fastify-passport · Advisory · fastify/fastify-passport · GitHub MISC github.com
Merge pull request from GHSA-2ccf-ffrj-m4qw · fastify/fastify-passport@07c90fe · GitHub MISC github.com
Cross Site Request Forgery (CSRF) | OWASP Foundation MISC owasp.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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