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Client Spoofing within the Keycloak Device Authorisation Grant

Low severity GitHub Reviewed Published Jun 28, 2023 in keycloak/keycloak • Updated Dec 21, 2023

Package

maven org.keycloak:keycloak-server-spi-private (Maven)

Affected versions

< 21.1.2

Patched versions

21.1.2
maven org.keycloak:keycloak-services (Maven)
< 21.1.2
21.1.2

Description

Under certain pre-conditions the vulnerability allows an attacker to spoof parts of the device flow and use a device_code to retrieve an access token for other OAuth clients.

References

@abstractj abstractj published to keycloak/keycloak Jun 28, 2023
Published to the GitHub Advisory Database Jun 30, 2023
Reviewed Jun 30, 2023
Published by the National Vulnerability Database Dec 21, 2023
Last updated Dec 21, 2023

Severity

Low

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
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

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:R/S:U/C:L/I:L/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(65th percentile)

Weaknesses

CVE ID

CVE-2023-2585

GHSA ID

GHSA-f5h4-wmp5-xhg6

Source code

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