CVE-2020-14302

2020-12-1520:15:15

CWE-294

[email protected]

web.nvd.nist.gov

keycloak

flaw

replay attacks

identity provider

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:S/C:N/I:P/A:N

CVSS3

4.9

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

Confidence

High

EPSS

0.001

Percentile

22.7%

JSON

A flaw was found in Keycloak before 13.0.0 where an external identity provider, after successful authentication, redirects to a Keycloak endpoint that accepts multiple invocations with the use of the same “state” parameter. This flaw allows a malicious user to perform replay attacks.