Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS00bTNtLXBwdngteGd3Oc4AAy6_

Session fixation in fastify-passport

Applications using @fastify/passport 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.

Details

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.

Fix

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.

Credits

• Pedro Adão (@pedromigueladao), Instituto Superior Técnico, University of Lisbon
• Marco Squarcina (@lavish), Security & Privacy Research Unit, TU Wien

Permalink: https://github.com/advisories/GHSA-4m3m-ppvx-xgw9
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS00bTNtLXBwdngteGd3Oc4AAy6_
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 1 year ago
Updated: about 1 year ago

CVSS Score: 8.1
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

EPSS Percentage: 0.00134
EPSS Percentile: 0.4912

Identifiers: GHSA-4m3m-ppvx-xgw9, CVE-2023-29019
References:

• https://github.com/fastify/fastify-passport/security/advisories/GHSA-4m3m-ppvx-xgw9
• https://nvd.nist.gov/vuln/detail/CVE-2023-29019
• https://github.com/fastify/fastify-passport/commit/43c82c321db58ea3e375dd475de60befbfcf2a11
• https://owasp.org/www-community/attacks/Session_fixation
• https://github.com/advisories/GHSA-4m3m-ppvx-xgw9

Repository: https://github.com/fastify/fastify-passport
Blast Radius: 10.5

Affected Packages