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CVE-2023-6291— Keycloak: redirect_uri validation bypass

Quick assessment

Affected
Red Hat Red Hat build of Keycloak 22
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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redirect_uri 验证逻辑存在缺陷，可能允许主机绕过，攻击者利用该漏洞可以盗取访问令牌，从而使攻击者可以冒充其他用户。

CVSS 7.1 · High EPSS 0.95% · P60

Affected Version Matrix 24

VendorProduct Version RangeStatus
Red Hat Migration Toolkit for Applications 6 any affected
Red Hat Migration Toolkit for Applications 7 any unaffected
Red Hat OpenShift Serverless any unaffected
Red Hat Red Hat build of Keycloak 22 22.0.7-1< * unaffected
22-6< * unaffected
22-9< * unaffected
Red Hat Red Hat build of Keycloak 22.0.7 any unaffected
Red Hat Red Hat Data Grid 8 any unaffected
Red Hat Red Hat Decision Manager 7 any unaffected
Red Hat Red Hat Fuse 7 any unaffected
Red Hat Red Hat JBoss Data Grid 7 any unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 6 any unaffected
Red Hat Red Hat Process Automation 7 any unaffected
Red Hat Red Hat Single Sign-On 7 any unaffected
Red Hat Red Hat Single Sign-On 7.6 for RHEL 7 0:18.0.11-2.redhat_00003.1.el7sso< * unaffected
0:18.0.12-1.redhat_00001.1.el7sso< * unaffected
Red Hat Red Hat Single Sign-On 7.6 for RHEL 8 0:18.0.11-2.redhat_00003.1.el8sso< * unaffected
0:18.0.12-1.redhat_00001.1.el8sso< * unaffected
Red Hat Red Hat Single Sign-On 7.6 for RHEL 9 0:18.0.11-2.redhat_00003.1.el9sso< * unaffected
0:18.0.12-1.redhat_00001.1.el9sso< * unaffected
Red Hat RHEL-8 based Middleware Containers 7.6-38< * unaffected
7.6.6-2< * unaffected
7.6-41< * unaffected
Red Hat Single Sign-On 7.6.6 any unaffected
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I. Basic Information for CVE-2023-6291

Vulnerability Information
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Vulnerability Title
Keycloak: redirect_uri validation bypass
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the redirect_uri validation logic in Keycloak. This issue may allow a bypass of otherwise explicitly allowed hosts. A successful attack may lead to an access token being stolen, making it possible for the attacker to impersonate other users.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
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redirect_uri 验证逻辑存在缺陷，可能允许主机绕过，攻击者利用该漏洞可以盗取访问令牌，从而使攻击者可以冒充其他用户。
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

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat build of Keycloak 22 22.0.7-1 ~ * cpe:/a:redhat:build_keycloak:22::el9
Red Hat Red Hat build of Keycloak 22 22-6 ~ * cpe:/a:redhat:build_keycloak:22::el9
Red Hat Red Hat build of Keycloak 22 22-9 ~ * cpe:/a:redhat:build_keycloak:22::el9
Red Hat Red Hat build of Keycloak 22.0.7 - cpe:/a:redhat:build_keycloak:22
Red Hat Red Hat Single Sign-On 7 - cpe:/a:redhat:red_hat_single_sign_on:7.6
Red Hat Red 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 Hat Red Hat Single Sign-On 7.6 for RHEL 7 0:18.0.12-1.redhat_00001.1.el7sso ~ * cpe:/a:redhat:red_hat_single_sign_on:7.6::el7
Red Hat Red 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 Hat Red Hat Single Sign-On 7.6 for RHEL 8 0:18.0.12-1.redhat_00001.1.el8sso ~ * cpe:/a:redhat:red_hat_single_sign_on:7.6::el8
Red Hat Red 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 Hat Red Hat Single Sign-On 7.6 for RHEL 9 0:18.0.12-1.redhat_00001.1.el9sso ~ * cpe:/a:redhat:red_hat_single_sign_on:7.6::el9
Red Hat RHEL-8 based Middleware Containers 7.6-38 ~ * cpe:/a:redhat:rhosemc:1.0::el8
Red Hat RHEL-8 based Middleware Containers 7.6.6-2 ~ * cpe:/a:redhat:rhosemc:1.0::el8
Red Hat RHEL-8 based Middleware Containers 7.6-41 ~ * cpe:/a:redhat:rhosemc:1.0::el8
Red Hat Single Sign-On 7.6.6 - cpe:/a:redhat:red_hat_single_sign_on:7.6
Red Hat Migration Toolkit for Applications 6 - cpe:/a:redhat:migration_toolkit_applications:6
Red Hat Migration Toolkit for Applications 7 - cpe:/a:redhat:migration_toolkit_applications:7
Red Hat OpenShift Serverless - cpe:/a:redhat:serverless:1
Red Hat Red Hat Data Grid 8 - cpe:/a:redhat:jboss_data_grid:8
Red Hat Red Hat Decision Manager 7 - cpe:/a:redhat:jboss_enterprise_brms_platform:7
Red Hat Red Hat Fuse 7 - cpe:/a:redhat:jboss_fuse:7
Red Hat Red Hat JBoss Data Grid 7 - cpe:/a:redhat:jboss_data_grid:7
Red Hat Red Hat JBoss Enterprise Application Platform 6 - cpe:/a:redhat:jboss_enterprise_application_platform:6
Red Hat Red Hat Process Automation 7 - cpe:/a:redhat:jboss_enterprise_bpms_platform:7

II. Public POCs for CVE-2023-6291

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III. Intelligence Information for CVE-2023-6291

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Vendor Advisories for CVE-2023-6291 (14)

IV. Related Vulnerabilities

Same product: Red Hat build of Keycloak 22
Same vendor: Red Hat
Same weakness: CWE-601

V. Comments for CVE-2023-6291

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