CVE-2025-31492

描述

mod_auth_openidc is an OpenID Certified authentication and authorization module for the Apache 2.x HTTP server that implements the OpenID Connect Relying Party functionality. Prior to 2.4.16.11, a bug in a mod_auth_openidc results in disclosure of protected content to unauthenticated users. The conditions for disclosure are an OIDCProviderAuthRequestMethod POST, a valid account, and there mustn't be any application-level gateway (or load balancer etc) protecting the server. When you request a protected resource, the response includes the HTTP status, the HTTP headers, the intended response (the self-submitting form), and the protected resource (with no headers). This is an example of a request for a protected resource, including all the data returned. In the case where mod_auth_openidc returns a form, it has to return OK from check_userid so as not to go down the error path in httpd. This means httpd will try to issue the protected resource. oidc_content_handler is called early, which has the opportunity to prevent the normal output being issued by httpd. oidc_content_handler has a number of checks for when it intervenes, but it doesn't check for this case, so the handler returns DECLINED. Consequently, httpd appends the protected content to the response. The issue has been patched in mod_auth_openidc versions >= 2.4.16.11.

如何修補 CVE-2025-31492

要修補 CVE-2025-31492,請將受影響套件升級到下列已修補版本。

• —升級至 2.4.9.4-0+deb11u5 或更新版本
• —升級至 2.4.9.4-0+deb11u5 或更新版本
• —升級至 2.4.12.3-2+deb12u3 或更新版本

CVE-2025-31492 正在被利用嗎?

低 — EPSS 為 0.5%,目前沒有觀察到大規模利用活動。

受影響套件(3)

• from 0, < 2.4.9.4-0+deb11u5
• from 0, < 2.4.9.4-0+deb11u5
• from 0, < 2.4.12.3-2+deb12u3

CVSS 分數

參考連結(1)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2025-31492