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CVE-2022-23527— Open Redirect in oidc_validate_redirect_url()

Quick assessment

Affected
zmartzone mod_auth_openidc
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.

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 2.4.12.2之前版本存在输入验证错误漏洞，该漏洞源于易受到 Open Redirect 的攻击， 向重定向 URI 提供注销参数时，oidc_validate_redirect_url() 中的现有代码无法正确检查以/ 开头的 URL，从而导致打开重定

CVSS 4.7 · Medium EPSS 0.91% · P58

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2022-23527

Vulnerability Information
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Vulnerability Title
Open Redirect in oidc_validate_redirect_url()
Source: CVE Program / CVE List V5
Vulnerability Description
mod_auth_openidc is an OpenID Certified™ authentication and authorization module for the Apache 2.x HTTP server. Versions prior to 2.4.12.2 are vulnerable to Open Redirect. When providing a logout parameter to the redirect URI, the existing code in oidc_validate_redirect_url() does not properly check for URLs that start with /\t, leading to an open redirect. This issue has been patched in version 2.4.12.2. Users unable to upgrade can mitigate the issue by configuring mod_auth_openidc to only allow redirection when the destination matches a given regular expression with OIDCRedirectURLsAllowed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
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
mod_auth_openidc 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 2.4.12.2之前版本存在输入验证错误漏洞，该漏洞源于易受到 Open Redirect 的攻击， 向重定向 URI 提供注销参数时，oidc_validate_redirect_url() 中的现有代码无法正确检查以/ 开头的 URL，从而导致打开重定
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
zmartzone mod_auth_openidc < 2.4.12.2 -

II. Public POCs for CVE-2022-23527

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III. Intelligence Information for CVE-2022-23527

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Vendor Advisories for CVE-2022-23527 (1)

Mailing List Discussions for CVE-2022-23527 (1)

IV. Related Vulnerabilities

Same product: mod_auth_openidc
Same vendor: zmartzone
Same weakness: CWE-601

V. Comments for CVE-2022-23527

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