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githubGitHub Advisory DatabaseGHSA-CVG2-7C3J-G36J
HistoryDec 18, 2023 - 7:31 p.m.

Keycloak vulnerable to reflected XSS via wildcard in OIDC redirect_uri

2023-12-1819:31:02
CWE-75
GitHub Advisory Database
github.com
23
keycloak
reflected xss
oidc
redirect_uri
wildcard
attack
vulnerability

CVSS3

5.4

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

6.4

Confidence

High

EPSS

0.001

Percentile

45.2%

Keycloak prevents certain schemes in redirects, but permits them if a wildcard is appended to the token. This could permit an attacker to submit a specially crafted request leading to XSS or possibly further attacks.

Affected configurations

Vulners
Node
org.keycloak\keycloakMatchservices
CPENameOperatorVersion
org.keycloak:keycloak-serviceslt23.0.3

CVSS3

5.4

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

6.4

Confidence

High

EPSS

0.001

Percentile

45.2%