CVE-2023-6291

2023-12-1418:01:10

redhat.com

access.redhat.com

keycloak

redirect_uri

validation

access token

theft

security flaw

bypass

stolen

impersonation

red hat

product security

mitigation

criteria

ease of use

deployment

applicability

stability

7.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

6.7 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

42.7%

JSON

A flaw was found in the redirect_uri validation logic in Keycloak. This issue may allow a bypass of otherwise explicitly allowed hosts. A successful attack may lead to an access token being stolen, making it possible for the attacker to impersonate other users.

Mitigation

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.