CVE-2020-27838 — MEDIUM (6.5)

Q: How severe is CVE-2020-27838?

CVE-2020-27838 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2020-27838?

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

Vulnerability Description

A flaw was found in keycloak in versions prior to 13.0.0. The client registration endpoint allows fetching information about PUBLIC clients (like client secret) without authentication which could be an issue if the same PUBLIC client changed to CONFIDENTIAL later. The highest threat from this vulnerability is to data confidentiality.

CVSS Score

6.5

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Redhat	Keycloak	< 13.0.0
Redhat	Single Sign-On	7.0

Related Weaknesses (CWE)

CWE-287

References

https://bugzilla.redhat.com/show_bug.cgi?id=1906797Issue TrackingVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1906797Issue TrackingVendor Advisory

FAQ

What is CVE-2020-27838?

CVE-2020-27838 is a vulnerability with a CVSS score of 6.5 (MEDIUM). A flaw was found in keycloak in versions prior to 13.0.0. The client registration endpoint allows fetching information about PUBLIC clients (like client secret) without authentication which could be a...

How severe is CVE-2020-27838?

CVE-2020-27838 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-27838?

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