Falhas do tipo CWE-287

2.849 resultados

Autenticação Insuficiente ou Ausente

Quando um usuário ou sistema afirma ser quem diz que é, a aplicação não valida (ou valida mal) essa identidade antes de conceder acesso. Isso permite que um atacante se passe por outra pessoa sem fornecer credenciais válidas, obtendo privilégios indevidos.

Exemplo

Um sistema que aceita login apenas verificando um campo de e-mail na sessão (sem senha), ou uma API que confia em um identificador de usuário enviado no header HTTP sem validar um token assinado. Um atacante simplesmente muda o valor e acessa dados de terceiros.

Como mitigar

Implemente autenticação robusta: exija senha forte + MFA quando possível, valide tokens com assinatura criptográfica, revoque sessões expiradas, e nunca confie em dados controlados pelo cliente. Teste autenticação em cada endpoint crítico.

CVE-2017-7930—An Improper Authentication issue was discovered in OSIsoft PI Server 2017 PI Data Archive versions prior to 2017. PI Data Archive has protocEPSS 2.0%CVE-2017-12196MEDIUMundertow before versions 1.4.18.SP1, 2.0.2.Final, 1.4.24.Final was found vulnerable when using Digest authentication, the server does not enEPSS 2.0%CVE-2024-48445CRITICALAn issue in compop.ca ONLINE MALL v.3.5.3 allows a remote attacker to execute arbitrary code via the rid, tid, et, and ts parameters.EPSS 2.0%CVE-2022-1049—A flaw was found in the Pacemaker configuration tool (pcs). The pcs daemon was allowing expired accounts, and accounts with expired passwordEPSS 2.0%CVE-2017-12225—A vulnerability in the web functionality of the Cisco Prime LAN Management Solution could allow an authenticated, remote attacker to hijack EPSS 2.0%CVE-2020-27780—A flaw was found in Linux-Pam in versions prior to 1.5.1 in the way it handle empty passwords for non-existing users. When the user doesn't EPSS 2.0%CVE-2021-38161—Not validating origin TLS certificateEPSS 1.9%CVE-2026-53595CRITICALFreeScout vulnerable to anonymous account takeover via /user-setup empty invite_hash on MySQLEPSS 1.9%CVE-2024-23465HIGHSolarWinds Access Rights Manager (ARM) ChangeHumster Exposed Dangerous Method Authentication Bypass VulnerabilityEPSS 1.9%CVE-2021-26637HIGHSiHAS Improper Authentication vulnerabilityEPSS 1.9%CVE-2024-28992HIGHSolarWinds Access Rights Manager Directory Traversal and Information Disclosure VulnerabilityEPSS 1.9%CVE-2021-36369HIGHAn issue was discovered in Dropbear through 2020.81. Due to a non-RFC-compliant check of the available authentication methods in the client-EPSS 1.9%CVE-2017-14006—GE Xeleris versions 1.0,1.1,2.1,3.0,3.1, medical imaging systems, all current versions are affected, these devices use default or hard-codedEPSS 1.9%CVE-2017-14004—GE GEMNet License server (EchoServer) all current versions are affected these devices use default or hard-coded credentials. Successful explEPSS 1.9%CVE-2021-22764MEDIUMA CWE-287: Improper Authentication vulnerability exists in PowerLogic PM55xx, PowerLogic PM8ECC, PowerLogic EGX100 and PowerLogic EGX300 (seEPSS 1.9%CVE-2021-21308MEDIUMImproper session management for soft logoutEPSS 1.9%CVE-2017-12695—An Improper Authentication issue was discovered in General Motors (GM) and Shanghai OnStar (SOS) SOS iOS Client 7.1. Successful exploitationEPSS 1.9%CVE-2021-43999—Improper validation of SAML responsesEPSS 1.8%CVE-2026-114509CRITICALLaravel TokenGuard authentication bypass through non-string API credentialsEPSS 1.8%CVE-2017-6047—Detcon Sitewatch Gateway, all versions without cellular, Passwords are presented in plaintext in a file that is accessible without authenticEPSS 1.8%