Vulnerability Monitor

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CVE-2018-14655

A flaw was found in Keycloak 3.4.3.Final, 4.0.0.Beta2, 4.3.0.Final. When using 'response_mode=form_post' it is possible to inject arbitrary Javascript-Code via the 'state'-parameter in the authentication URL. This allows an XSS-Attack upon succesfully login.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 4.6, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required requiring only low-level privileges . The vulnerability impacts limited data confidentiality, limited integrity, for affected systems. Impacting 3 products from redhat, from redhat, from redhat organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2018, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2018-11-13T19:29:00.307

Last Modified

2024-11-21T03:49:31.257

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 4.6 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:S/C:N/I:P/A:N

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: SINGLE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

6.8

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-79
Type: Primary
CWE-79

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	redhat	keycloak	3.4.3	Yes
Application	redhat	keycloak	4.0.0	Yes
Application	redhat	keycloak	4.3.0	Yes
Application	redhat	single_sign-on	7.2	Yes
Operating System	redhat	linux	7.0	No
Application	redhat	single_sign-on	7.2	Yes
Operating System	redhat	linux	6.0	No
Application	redhat	single_sign-on	-	Yes

References

https://access.redhat.com/errata/RHSA-2018:3592 Vendor Advisory ([email protected])
https://access.redhat.com/errata/RHSA-2018:3593 Vendor Advisory ([email protected])
https://access.redhat.com/errata/RHSA-2018:3595 Vendor Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14655 Issue Tracking, Vendor Advisory ([email protected])
https://access.redhat.com/errata/RHSA-2018:3592 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://access.redhat.com/errata/RHSA-2018:3593 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://access.redhat.com/errata/RHSA-2018:3595 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14655 Issue Tracking, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For redhat's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.