Red Hat keycloak/Single Sign-On/Middleware Container/ Admin User Interface allocation of resources

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.9$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Red Hat keycloak, Single Sign-On and Middleware Container. The affected element is an unknown function of the component Admin User Interface. Executing a manipulation can lead to allocation of resources. This vulnerability is tracked as CVE-2023-6563. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in Red Hat keycloak, Single Sign-On and Middleware Container (Middleware) (version unknown). This vulnerability affects an unknown function of the component Admin User Interface. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect availability. CVE summarizes:

An unconstrained memory consumption vulnerability was discovered in Keycloak. It can be triggered in environments which have millions of offline tokens (> 500,000 users with each having at least 2 saved sessions). If an attacker creates two or more user sessions and then open the "consents" tab of the admin User Interface, the UI attempts to load a huge number of offline client sessions leading to excessive memory and CPU consumption which could potentially crash the entire system.

The weakness was disclosed 12/15/2023 as RHSA-2023:7854. The advisory is available at github.com. This vulnerability was named CVE-2023-6563 since 12/06/2023. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-3108). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 6.9

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.7
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/06/2023 🔍
12/15/2023 +9 days 🔍
12/15/2023 +0 days 🔍
10/09/2025 +664 days 🔍

Sourcesinfo

Vendor: redhat.com

Advisory: RHSA-2023:7854
Status: Confirmed

CVE: CVE-2023-6563 (🔍)
GCVE (CVE): GCVE-0-2023-6563
GCVE (VulDB): GCVE-100-248122
EUVD: 🔍

Entryinfo

Created: 12/15/2023 06:49
Updated: 10/09/2025 17:02
Changes: 12/15/2023 06:49 (49), 10/09/2025 17:02 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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