Falhas do tipo CWE-22

6.629 resultados

Travessia de diretório (Path Traversal)

A aplicação constrói caminhos de arquivo usando entrada do usuário sem validar adequadamente, permitindo que caracteres especiais como '../' façam o caminho "sair" do diretório permitido e acessar arquivos fora da zona restrita. Isso expõe dados sensíveis ou permite manipulação de arquivos críticos do sistema.

Exemplo

Um site permite download de documentos via URL como /download?file=relatorio.pdf, mas não valida o parâmetro. Um atacante usa /download?file=../../etc/passwd para ler o arquivo de senhas do servidor, ou /download?file=../../configuracao.db para acessar a base de dados da aplicação.

Como mitigar

Valide e normalize todos os caminhos de entrada (use funções nativas como realpath ou canonicalize), implemente uma whitelist de arquivos permitidos em vez de bloquear padrões perigosos, e configure permissões de arquivo restritivas no SO. Melhor ainda: nunca construa caminhos a partir de entrada do usuário — use índices ou IDs mapeados internamente.

CVE-2017-16195—pytservce is a static file server. pytservce is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by plEPSS 2.0%CVE-2017-16142—infraserver is a RESTful server. infraserver is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by plEPSS 2.0%CVE-2017-16159—caolilinode is a simple file server. caolilinode is vulnerable to a directory traversal issue, giving an attacker access to the filesystem bEPSS 2.0%CVE-2017-16135—serverzyy is a static file server. serverzyy is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by plEPSS 2.0%CVE-2017-16132—simple-npm-registry is a local npm package cache. simple-npm-registry is vulnerable to a directory traversal issue, giving an attacker accesEPSS 2.0%CVE-2017-16103—serveryztyzt is a simple http server. serveryztyzt is vulnerable to a directory traversal issue, giving an attacker access to the filesystemEPSS 2.0%CVE-2017-16191—cypserver is a static file server. cypserver is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by plEPSS 2.0%CVE-2017-16210—jn_jj_server is a static file server. jn_jj_server is vulnerable to a directory traversal issue, giving an attacker access to the filesystemEPSS 2.0%CVE-2017-16125—rtcmulticonnection-client is a signaling implementation for RTCMultiConnection.js, a multi-session manager. rtcmulticonnection-client is vulEPSS 2.0%CVE-2017-16089—serverlyr is a simple http server. serverlyr is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by plEPSS 2.0%CVE-2017-16171—hcbserver is a static file server. hcbserver is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by plEPSS 2.0%CVE-2017-16157—censorify.tanisjr is a simple web server and API RESTful service. censorify.tanisjr is vulnerable to a directory traversal issue, giving an EPSS 2.0%CVE-2017-16185—uekw1511server is a static file server. uekw1511server is vulnerable to a directory traversal issue, giving an attacker access to the filesyEPSS 2.0%CVE-2017-16188—reecerver is a web server. reecerver is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing ".EPSS 2.0%CVE-2017-16178—intsol-package is a file server. intsol-package is vulnerable to a directory traversal issue, giving an attacker access to the filesystem byEPSS 2.0%CVE-2017-16181—wintiwebdev is a static file server. wintiwebdev is vulnerable to a directory traversal issue, giving an attacker access to the filesystem bEPSS 2.0%CVE-2017-16162—22lixian is a simple file server. 22lixian is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placEPSS 2.0%CVE-2017-16155—fast-http-cli is the command line interface for fast-http, a simple web server. fast-http-cli is vulnerable to a directory traversal issue, EPSS 2.0%CVE-2017-16143—commentapp.stetsonwood is an http server. commentapp.stetsonwood is vulnerable to a directory traversal issue, giving an attacker access to EPSS 2.0%CVE-2017-16186—360class.jansenhm is a static file server. 360class.jansenhm is vulnerable to a directory traversal issue, giving an attacker access to the EPSS 2.0%