CVE-2018-14655 — MEDIUM (4.6)

Vulnerability Description

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.

CVSS Score

4.6

MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Redhat	Keycloak	3.4.3
Redhat	Single Sign-On	7.2
Redhat	Linux	7.0

Related Weaknesses (CWE)

CWE-79

References

https://access.redhat.com/errata/RHSA-2018:3592Vendor Advisory
https://access.redhat.com/errata/RHSA-2018:3593Vendor Advisory
https://access.redhat.com/errata/RHSA-2018:3595Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14655Issue TrackingVendor Advisory
https://access.redhat.com/errata/RHSA-2018:3592Vendor Advisory
https://access.redhat.com/errata/RHSA-2018:3593Vendor Advisory
https://access.redhat.com/errata/RHSA-2018:3595Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14655Issue TrackingVendor Advisory

FAQ

What is CVE-2018-14655?

CVE-2018-14655 is a vulnerability with a CVSS score of 4.6 (MEDIUM). 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 authenticat...

How severe is CVE-2018-14655?

CVE-2018-14655 has been rated MEDIUM with a CVSS base score of 4.6/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-14655?

Check the references section above for vendor advisories and patch information. Affected products include: Redhat Keycloak, Redhat Single Sign-On, Redhat Linux.