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I. Basic Information for CVE-2023-6563
Vulnerability Information
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Vulnerability Title
Keycloak: offline session token dos
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
不加限制或调节的资源分配
Source: NVD (National Vulnerability Database)
Vulnerability Title
Red Hat Keycloak 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat Keycloak是美国红帽（Red Hat）公司的一套为现代应用和服务提供身份验证和管理功能的软件。 Red Hat Keycloak存在安全漏洞，该漏洞源于如果攻击者创建两个或更多用户会话，然后打开管理用户界面的consent选项，则 UI 会尝试加载大量脱机客户端会话，导致内存和 CPU 消耗过多，从而可能导致整个系统崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
Red HatRed Hat Single Sign-On 7.6 for RHEL 7 0:18.0.11-2.redhat_00003.1.el7sso ~ * cpe:/a:redhat:red_hat_single_sign_on:7.6::el7
Red HatRed Hat Single Sign-On 7.6 for RHEL 8 0:18.0.11-2.redhat_00003.1.el8sso ~ * cpe:/a:redhat:red_hat_single_sign_on:7.6::el8
Red HatRed Hat Single Sign-On 7.6 for RHEL 9 0:18.0.11-2.redhat_00003.1.el9sso ~ * cpe:/a:redhat:red_hat_single_sign_on:7.6::el9
Red HatRHEL-8 based Middleware Containers 7.6-38 ~ * cpe:/a:redhat:rhosemc:1.0::el8
Red HatRHEL-8 based Middleware Containers 7.6.6-2 ~ * cpe:/a:redhat:rhosemc:1.0::el8
Red HatSingle Sign-On 7.6.6-cpe:/a:redhat:red_hat_single_sign_on:7.6.6
Red HatRed Hat Build of Keycloak-cpe:/a:redhat:build_keycloak:
II. Public POCs for CVE-2023-6563
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III. Intelligence Information for CVE-2023-6563
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IV. Related Vulnerabilities
Same vendor: Red Hat
Same weakness: CWE-770
V. Comments for CVE-2023-6563

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