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CVE-2023-0264

MEDIUM
5
CVSS Score
Published: August 4, 2023 at 05:09 PM UTC
Updated: June 17, 2026 at 05:25 AM UTC
7 products affected across 3 vendorsOpenShift Container PlatformSingle Sign onKeycloak

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Severity
MEDIUM5
Exploit prediction
EPSS 1%

Description

A flaw was found in Keycloaks OpenID Connect user authentication, which may incorrectly authenticate requests. An authenticated attacker who could obtain information from a user request within the same realm could use that data to impersonate the victim and generate new session tokens. This issue could impact confidentiality, integrity, and availability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Keycloak· Keycloak
95%
v < 18.0.6
Affected range stops below 18.0.6, so it looks safe — our inference, not a vendor statement
OpenShift Container Platform· Red Hatcontainer
95%
4.104.9
redhat-enterprise-linux (environment)
OpenShift Container Platform for IBM Linuxone· Red Hat
95%
4.104.9
redhat-enterprise-linux (environment)
OpenShift Container Platform IBM Z Systems· Red Hat
95%
4.104.9
redhat-enterprise-linux (environment)
Single Sign on· Red Hatrpm
95%
v < 7.6.2
Affected range stops below 7.6.2, so it looks safe — our inference, not a vendor statement
redhat-enterprise-linux (environment)
Keycloak· Red Hat Com
60%
v < 18.0.6
Affected range stops below 18.0.6, so it looks safe — our inference, not a vendor statement
Enterprise Linux· Red Hatrpmdevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://access.redhat.com/security/cve/CVE-2023-0264

CVSS

5MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-287

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