Falhas do tipo CWE-345

555 resultados

Verificação insuficiente de autenticidade de dados

A aplicação recebe dados de fontes externas (rede, arquivo, entrada do usuário) mas não valida adequadamente se eles realmente vieram de quem diz vir ou se não foram alterados no caminho. Isso permite que um atacante forje, intercepte ou modifique dados sem que o sistema detecte, comprometendo integridade e confiança.

Exemplo

Um serviço REST que confia cegamente em um campo 'user_id' vindo do cliente, sem verificar assinatura ou token, permitindo que alguém mude a URL para acessar dados de outro usuário. Ou um arquivo de configuração lido sem validar sua hash, permitindo execução de código malicioso se o arquivo for corrompido.

Como mitigar

Use mecanismos criptográficos de autenticação (HMAC, assinatura digital, certificados TLS) para garantir a origem e integridade dos dados. No lado do servidor, nunca confie em identificadores ou claims do cliente — valide contra seu próprio estado autorizado (sessão, JWT assinado, etc).

CVE-2021-36367HIGHPuTTY through 0.75 proceeds with establishing an SSH session even if it has never sent a substantive authentication response. This makes it EPSS 1.1%CVE-2024-39689HIGHCertifi removes GLOBALTRUST root certificateEPSS 1.0%CVE-2021-20267—A flaw was found in openstack-neutron's default Open vSwitch firewall rules. By sending carefully crafted packets, anyone in control of a seEPSS 1.0%CVE-2024-37968HIGHWindows DNS Spoofing VulnerabilityEPSS 1.0%CVE-2026-85430HIGHMOOS essential-moos through 10.0.1 pShare Unauthenticated UDP Datagram RepublishingEPSS 1.0%CVE-2019-8921MEDIUMAn issue was discovered in bluetoothd in BlueZ through 5.48. The vulnerability lies in the handling of a SVC_ATTR_REQ by the SDP implementatEPSS 0.9%CVE-2021-21320LOWUser content sandbox can be confused into opening arbitrary documentsEPSS 0.9%CVE-2015-3956—Hospira Plum A+ Infusion System version 13.4 and prior, Plum A+3 Infusion System version 13.6 and prior, and Symbiq Infusion System, versionEPSS 0.9%CVE-2017-13083MEDIUMAkeo Consulting Rufus prior to version 2.17.1187 does not adequately validate the integrity of updates downloaded over HTTP, allowing an attEPSS 0.9%CVE-2026-41432HIGHNew API: Stripe Webhook Signature Bypass via Empty Secret Enables Unlimited Quota FraudEPSS 0.9%CVE-2026-62869HIGHAzure Entra ID Spoofing VulnerabilityEPSS 0.8%CVE-2015-5236—It was discovered that the IcedTea-Web used codebase attribute of the <applet> tag on the HTML page that hosts Java applet in the Same OrigiEPSS 0.8%CVE-2025-43865HIGHReact Router allows pre-render data spoofing on React-Router framework modeEPSS 0.8%CVE-2021-20271—A flaw was found in RPM's signature check functionality when reading a package file. This flaw allows an attacker who can convince a victim EPSS 0.8%CVE-2024-38198HIGHWindows Print Spooler Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2024-37370HIGHIn MIT Kerberos 5 (aka krb5) before 1.21.3, an attacker can modify the plaintext Extra Count field of a confidential GSS krb5 wrap token, caEPSS 0.7%CVE-2023-27748CRITICALBlackVue DR750-2CH LTE v.1.012_2022.10.26 does not employ authenticity check for uploaded firmware. This can allow attackers to upload craftEPSS 0.7%CVE-2019-18905MEDIUMDeprecated functionality in autoyast2 automatically imports gpg keys without checking themEPSS 0.7%CVE-2024-23601CRITICALA code injection vulnerability exists in the scan_lib.bin functionality of AutomationDirect P3-550E 1.2.10.9. A specially crafted scan_lib.bEPSS 0.7%CVE-2020-10137—Z-Wave devices based on Silicon Labs 700 series chipsets using S2 do not adequately authenticate or encrypt FIND_NODE_IN_RANGE frames, allowEPSS 0.7%