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In order to redirect the user after authentication, Authelia uses rd query parameter provided by the proxy. However an attacker could use phishing to make the user be redirected to a bad domain. In order to avoid the user to be redirected to a bad location, Authelia now verifies the redirection URL is under the protected domain.
8 lines
301 B
TypeScript
8 lines
301 B
TypeScript
import { DomainExtractor } from "./DomainExtractor";
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export function BelongToDomain(url: string, domain: string): boolean {
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const urlDomain = DomainExtractor.fromUrl(url);
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if (!urlDomain) return false;
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const idx = urlDomain.indexOf(domain);
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return idx + domain.length == urlDomain.length;
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} |