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CVE

CVE-2023-6134

A flaw was found in Keycloak that prevents certain schemes in redirects, but permits them if a wildcard is appended to t

A flaw was found in Keycloak that prevents certain schemes in redirects, but permits them if a wildcard is appended to the token. This issue could allow an attacker to submit a specially crafted request leading to cross-site scripting (XSS) or further attacks. This flaw is the result of an incomplete fix for CVE-2020-10748.

MEDIUM · CVSS 4.6 EPSS 0.02468
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
▤

Affected Products & Versions

6
redhat single sign-on< 7.6
redhat keycloak< 22.0.7
redhat openshift container platformall versions
redhat openshift container platform for powerall versions
redhat openshift container platform ibm z systemsall versions
redhat single sign-onall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.keycloak:keycloak-services MODERATE fixed in 23.0.3
⚠

Public Exploits & PoCs

1
pocaccess.redhat.com · RHSA-2023:7857access.redhat.com
▣

Scoring & Timeline

4.6
MEDIUM · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 Dec 2023 · 10:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
⚑

Vendor Advisories

19
rhsaRHSA-2024:0800Moderate
rhsaRHSA-2024:0801Moderate
rhsaRHSA-2024:0804Moderate
rhsaRHSA-2024:0798Moderate
rhsaRHSA-2024:0799Moderate
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://access.redhat.com/security/cve/CVE-2023-6134Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2249673Issue Tracking
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