Fallos del tipo CWE-290

602 resultados

Autenticação inadequada sujeita a falsificação de identidade

Ocorre quando o mecanismo de autenticação é implementado de forma fraca ou incompleta, permitindo que um atacante se faça passar por outro usuário ou sistema sem precisar das credenciais legítimas. O risco é grave: qualquer um pode ganhar acesso não autorizado simplesmente contornando ou falsificando a identidade.

Ejemplo

Um app que autentica usuários apenas verificando um header HTTP customizado (tipo 'X-User-ID: 123') sem validação criptográfica real. Um atacante muda esse header para 'X-User-ID: admin' e consegue acesso à conta administrativa. Ou um serviço que aceita requisições apenas porque vêm de um IP específico, sem verificar certificados ou assinaturas.

Cómo mitigar

Use protocolos de autenticação estabelecidos (OAuth 2.0, JWT com assinatura, SAML) em vez de inventar o seu. Sempre valide credenciais no servidor com mecanismos criptográficos (hash, assinatura digital, certificados). Nunca confie em headers HTTP, IPs ou tokens não assinados como prova única de identidade.

CVE-2023-2887CRITICALUser Authentication Bypass in CBOT's ChatbotEPSS 0.8%CVE-2021-20278—An authentication bypass vulnerability was found in Kiali in versions before 1.31.0 when the authentication strategy `OpenID` is used. When EPSS 0.8%CVE-2024-34397MEDIUMAn issue was discovered in GNOME GLib before 2.78.5, and 2.79.x and 2.80.x before 2.80.1. When a GDBus-based client subscribes to signals frEPSS 0.8%CVE-2021-27853MEDIUML2 network filtering can be bypassed using stacked VLAN0 and LLC/SNAP headersEPSS 0.8%CVE-2025-32012MEDIUMJellyfin Vulnerable to Denial of Service (DoS) via IP SpoofingEPSS 0.8%CVE-2023-32207HIGHA missing delay in popup notifications could have made it possible for an attacker to trick a user into granting permissions. This vulnerabiEPSS 0.7%CVE-2024-23674CRITICALThe Online-Ausweis-Funktion eID scheme in the German National Identity card through 2024-02-15 allows authentication bypass by spoofing. A mEPSS 0.7%CVE-2023-21794MEDIUMMicrosoft Edge (Chromium-based) Spoofing VulnerabilityEPSS 0.7%CVE-2022-4746HIGHFluentAuth < 1.0.2 - Bypass blocks by IP SpoofingEPSS 0.7%CVE-2024-36466HIGHUnauthenticated Zabbix frontend takeover when SSO is being usedEPSS 0.7%CVE-2022-3820MEDIUMAn issue has been discovered in GitLab affecting all versions starting from 15.4 prior to 15.4.4, and 15.5 prior to 15.5.2. GitLab was not pEPSS 0.7%CVE-2021-45036HIGHVelneo vClient improper authenticationEPSS 0.7%CVE-2023-48396CRITICALApache SeaTunnel Web: Authentication bypassEPSS 0.7%CVE-2026-58370CRITICALWoodpecker < 3.15.0 - GitLab Approval Gate Bypass via Spoofable Commit Author NameEPSS 0.7%CVE-2025-43245CRITICALA downgrade issue was addressed with additional code-signing restrictions. This issue is fixed in macOS Sequoia 15.6, macOS Sonoma 14.7.7, mEPSS 0.7%CVE-2025-8853CRITICAL2100 Technology｜Official Document Management System - Authentication BypassEPSS 0.7%CVE-2025-25182CRITICALStroom Authentication/Authorization Bypass when using AWS ALBEPSS 0.7%CVE-2026-55954CRITICALMissing ID token claim validation in ueberauth_apple allows account takeoverEPSS 0.7%CVE-2025-27695MEDIUMDell Wyse Management Suite, versions prior to WMS 5.1 contain an Authentication Bypass by Spoofing vulnerability. A high privileged attackerEPSS 0.7%CVE-2024-49193HIGHZendesk before 2024-07-02 allows remote attackers to read ticket history via e-mail spoofing, because Cc fields are extracted from incoming EPSS 0.7%