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CVE-2022-4137

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Date: September 25, 2023

A reflected cross-site scripting (XSS) vulnerability was found in the 'oob' OAuth endpoint due to incorrect null-byte handling. This issue allows a malicious link to insert an arbitrary URI into a Keycloak error page. This flaw requires a user or administrator to interact with a link in order to be vulnerable. This may compromise user details, allowing it to be changed or collected by an attacker.

Language: Java

Severity Score

Related Resources (12)

https://access.redhat.com/errata/RHSA-2023:1049
https://github.com/keycloak/keycloak/security/advisories/GHSA-9hhc-pj4w-w5rv
https://access.redhat.com/security/cve/CVE-2022-4137
https://nvd.nist.gov/vuln/detail/CVE-2022-4137
https://bugzilla.redhat.com/show_bug.cgi?id=2148496
https://access.redhat.com/errata/RHSA-2023:1044
https://access.redhat.com/errata/RHSA-2023:1045
https://github.com/keycloak/keycloak/commit/30d0e9d22dae51392e5a3748a1c68c116667359a
https://github.com/keycloak/keycloak/pull/16774
https://access.redhat.com/errata/RHSA-2023:1043
https://github.com/keycloak/keycloak
https://www.mend.io/vulnerability-database/CVE-2022-4137

Severity Score

Weakness Type (CWE)

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-79

Improper Encoding or Escaping of Output

CWE-116

Improper Neutralization of Script in an Error Message Web Page

CWE-81

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): NONE

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