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Keycloak users may be able to remove MFA from other users' devices

Moderate severity GitHub Reviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Apr 23, 2024

Package

maven org.keycloak:keycloak-core (Maven)

Affected versions

<= 9.0.1

Patched versions

9.0.2

Description

A community-only flaw was found where a malicious user can register himself and then uses the "remove devices" form to post different credential ids with the hope of removing MFA devices for other users.

References

Published by the National Vulnerability Database May 4, 2020
Published to the GitHub Advisory Database May 24, 2022
Reviewed Apr 23, 2024
Last updated Apr 23, 2024

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

EPSS score

0.072%
(33rd percentile)

Weaknesses

CVE ID

CVE-2020-10686

GHSA ID

GHSA-9695-w6h2-jpv9

Source code

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