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I. Basic Information for CVE-2021-39191
Vulnerability Information

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Vulnerability Title
URL Redirection to Untrusted Site ('Open Redirect') in mod_auth_openidc
Source: NVD (National Vulnerability Database)
Vulnerability Description
mod_auth_openidc is an authentication/authorization module for the Apache 2.x HTTP server that functions as an OpenID Connect Relying Party, authenticating users against an OpenID Connect Provider. In versions prior to 2.4.9.4, the 3rd-party init SSO functionality of mod_auth_openidc was reported to be vulnerable to an open redirect attack by supplying a crafted URL in the `target_link_uri` parameter. A patch in version 2.4.9.4 made it so that the `OIDCRedirectURLsAllowed` setting must be applied to the `target_link_uri` parameter. There are no known workarounds aside from upgrading to a patched version.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: NVD (National Vulnerability Database)
Vulnerability Title
mod_auth_openidc 输入输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
mod_auth_openidc是一个应用软件。是 Apache 2.x HTTP 服务器的身份验证/授权模块,用作OpenID Connect 依赖方,根据 OpenID Connect 提供程序对用户进行身份验证。 mod_auth_openidc是Apache2.x HTTP服务器的身份验证/授权模块,作为OpenID连接依赖方,根据OpenID连接提供程序对用户进行身份验证。mod_auth_openidc 2.4.9.4之前的版本存在输入验证错误漏洞,该漏洞源于第三方初始化SSO功能容易受到开放
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
zmartzonemod_auth_openidc <=2.4.9.3 -
II. Public POCs for CVE-2021-39191
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III. Intelligence Information for CVE-2021-39191
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