Fallos del tipo CWE-287

2803 resultados

Autenticação inadequada ou ausente

A aplicação não valida ou valida de forma insuficiente a identidade de quem tenta acessá-la. Quando um usuário diz ser quem é, o sistema acredita sem verificar corretamente, permitindo que atacantes se façam passar por outros usuários ou contas legítimas.

Ejemplo

Um sistema que aceita login apenas com nome de usuário, sem senha. Ou uma API que confia no header 'User-ID' enviado pelo cliente sem validar se aquele usuário realmente existe ou tem sessão ativa. Um atacante simplesmente altera o header e acessa dados de outra conta.

Cómo mitigar

Implemente autenticação robusta: exija múltiplos fatores (senha forte + MFA), valide credenciais contra base de dados segura, use sessões com token assinado e com expiração, nunca confie em dados enviados pelo cliente como prova de identidade. Revise regularmente logs de acesso para detectar abusos.

CVE-2021-21335MEDIUMBasic Authentication can be bypassed using a malformed usernameEPSS 1.7%CVE-2018-3761—Nextcloud Server before 12.0.8 and 13.0.3 suffer from improper authentication on the OAuth2 token endpoint. Missing checks potentially allowEPSS 1.7%CVE-2022-23635HIGHUnauthenticated control plane denial of service attack in IstioEPSS 1.7%CVE-2020-15136MEDIUMImproper authentication in etcdEPSS 1.7%CVE-2019-14856MEDIUMansible before versions 2.8.6, 2.7.14, 2.6.20 is vulnerable to a NoneEPSS 1.6%CVE-2022-45922HIGHAn issue was discovered in OpenText Content Suite Platform 22.1 (16.2.19.1803). The request handler for ll.KeepAliveSession sets a valid AdmEPSS 1.6%CVE-2019-15585—Improper authentication exists in < 12.3.2, < 12.2.6, and < 12.1.12 for GitLab Community Edition (CE) and Enterprise Edition (EE) in the GitEPSS 1.6%CVE-2021-21329HIGHMulti Factor Authentication Token Improperly Validated On User LoginEPSS 1.6%CVE-2019-18341MEDIUMA vulnerability has been identified in Control Center Server (CCS) (All versions < V1.5.0). The SFTP service (default port 22/tcp) of the CoEPSS 1.6%CVE-2022-22935LOWAn issue was discovered in SaltStack Salt in versions before 3002.8, 3003.4, 3004.1. A minion authentication denial of service can cause a MEPSS 1.6%CVE-2025-55241CRITICALAzure Entra ID Elevation of Privilege VulnerabilityEPSS 1.6%CVE-2018-3822—X-Pack Security versions 6.2.0, 6.2.1, and 6.2.2 are vulnerable to a user impersonation attack via incorrect XML canonicalization and DOM trEPSS 1.6%CVE-2022-2197CRITICALExemys RME1EPSS 1.6%CVE-2019-15987MEDIUMCisco WebEx Centers Username Enumeration Information Disclosure VulnerabilityEPSS 1.6%CVE-2019-18287—A vulnerability has been identified in SPPA-T3000 Application Server (All versions < Service Pack R8.2 SP2). The Application Server exposes EPSS 1.6%CVE-2019-18286—A vulnerability has been identified in SPPA-T3000 Application Server (All versions < Service Pack R8.2 SP2). The Application Server exposes EPSS 1.6%CVE-2022-28321CRITICALThe Linux-PAM package before 1.5.2-6.1 for openSUSE Tumbleweed allows authentication bypass for SSH logins. The pam_access.so module doesn'tEPSS 1.6%CVE-2021-44759—Improper authentication vulnerability in TLS origin verificationEPSS 1.6%CVE-2020-11020HIGHAuthentication and extension bypass in FayeEPSS 1.6%CVE-2014-5412—Schneider Electric SCADA Expert ClearSCADA Improper AuthenticationEPSS 1.6%