CVE-2023-2422— Keycloak: oauth client impersonation
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I. Basic Information for CVE-2023-2422
Vulnerability Information
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Vulnerability Title
Keycloak: oauth client impersonation
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in Keycloak. A Keycloak server configured to support mTLS authentication for OAuth/OpenID clients does not properly verify the client certificate chain. A client that possesses a proper certificate can authorize itself as any other client, therefore, access data that belongs to other clients.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
证书验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Red Hat Keycloak 信任管理问题漏洞
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，该漏洞源于服务器无法正确验证客户端证书链。
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 Single Sign-On 7 | - | cpe:/a:redhat:red_hat_single_sign_on:7.6.4 | |
| Red Hat | Red Hat Single Sign-On 7.6 for RHEL 7 | 0:18.0.8-1.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 | 0:18.0.8-1.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 | 0:18.0.8-1.redhat_00001.1.el9sso ~ * | cpe:/a:redhat:red_hat_single_sign_on:7.6::el9 | |
| Red Hat | RHEL-8 based Middleware Containers | 7.6-24 ~ * | cpe:/a:redhat:rhosemc:1.0::el8 |
II. Public POCs for CVE-2023-2422
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|---|
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Same Patch Batch · Red Hat · 2023-10-04 · 8 CVEs total
| CVE-2023-39191 | 8.2 HIGH | Kernel: ebpf: insufficient stack type checks in dynptr |
| CVE-2023-4586 | 7.4 HIGH | Hotrod-client: hot rod client does not enable hostname validation when using tls that lea |
| CVE-2023-3971 | 7.3 HIGH | Controller: html injection in custom login info |
| CVE-2023-4237 | 7.3 HIGH | Platform: ec2_key module prints out the private key directly to the standard output |
| CVE-2023-4380 | 6.3 MEDIUM | Platform: token exposed at importing project |
| CVE-2023-3428 | 6.2 MEDIUM | Imagemagick: heap-buffer-overflow in coders/tiff.c |
| CVE-2023-3576 | 5.5 MEDIUM | Libtiff: memory leak in tiffcrop.c |
IV. Related Vulnerabilities
Same product: Red Hat Single Sign-On 7
Same vendor: Red Hat
- CVE-2026-42011
Gnutls: gnutls: security bypass due to incorrect name constr - CVE-2026-42010
Gnutls: gnutls: authentication bypass via nul character in u - CVE-2026-6420
Keylime: keylime: security bypass due to hardcoded tpm quote - CVE-2026-34956
Openvswitch: open vswitch: denial of service via malformed f - CVE-2026-34002
Xorg: xwayland: x.org x server: information disclosure or de
Same weakness: CWE-295
V. Comments for CVE-2023-2422
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