CVE-2023-29020
Published Apr 21, 2023
Last updated 2 years ago
Overview
- 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`.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 6.5
- Impact score
- 3.6
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- Severity
- MEDIUM
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:fastify:passport:*:*:*:*:*:node.js:*:*",
"vulnerable": true,
"matchCriteriaId": "3F071BA9-FBA0-4860-9B99-9D48230422D2",
"versionEndExcluding": "1.1.0"
},
{
"criteria": "cpe:2.3:a:fastify:passport:*:*:*:*:*:node.js:*:*",
"vulnerable": true,
"matchCriteriaId": "341AD078-D84A-45B6-876F-7FA286EECAAA",
"versionEndExcluding": "2.3.0",
"versionStartIncluding": "2.0.0"
}
],
"operator": "OR"
}
]
}
]