CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
AI Score
Confidence
High
EPSS
Percentile
46.4%
@fastify/passport is a port of passport authentication library for the Fastify ecosystem. Applications using @fastify/passport
in affected versions 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. 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. 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. Users are advised to upgrade. There are no known workarounds for this vulnerability.
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
AI Score
Confidence
High
EPSS
Percentile
46.4%