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osvGoogleOSV:GHSA-F5H4-WMP5-XHG6
HistoryJun 30, 2023 - 8:29 p.m.

Client Spoofing within the Keycloak Device Authorisation Grant

2023-06-3020:29:25
Google
osv.dev
17
spoofing
keycloak
device grant
vulnerability
attacker
access token
oauth clients
software

CVSS3

8.1

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

EPSS

0.001

Percentile

38.1%

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.

CVSS3

8.1

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

EPSS

0.001

Percentile

38.1%