Fallos del tipo CWE-22

6629 resultados

Travessia de diretório (path traversal)

A aplicação constrói caminhos de arquivo a partir de entrada do usuário sem validar adequadamente sequências como '../' ou símbolos absolutos, permitindo que um atacante acesse arquivos fora do diretório permitido. Isso expõe dados sensíveis ou permite execução não autorizada de operações no sistema de arquivos.

Ejemplo

Um sistema web que serve documentos de um diretório específico recebe a requisição 'GET /doc?file=../../etc/passwd'. Se não validar a entrada, o código resolve o caminho para fora do diretório restrito e vaza o arquivo de senhas do sistema.

Cómo mitigar

Valide caminhos usando listas brancas de nomes de arquivo permitidos, normalize caminhos (remover '../' e símbolos), use APIs que isolem automaticamente operações em diretório base (ex: chroot, sandbox), e evite concatenar entrada direta em construtores de caminhos. Teste com payloads comuns de path traversal em testes de segurança.

CVE-2017-16221—yzt is a simple file server. yzt is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing "../" EPSS 2.0%CVE-2017-16093—cyber-js is a simple http server. A cyberjs server is vulnerable to a directory traversal issue, giving an attacker access to the filesystemEPSS 2.0%CVE-2017-16146—mockserve is a file server. mockserve is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing "EPSS 2.0%CVE-2017-16168—wffserve is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing "../" in the url.EPSS 2.0%CVE-2017-16199—susu-sum is a static file server. susu-sum is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placEPSS 2.0%CVE-2017-16216—tencent-server is a simple web server. tencent-server is vulnerable to a directory traversal issue, giving an attacker access to the filesysEPSS 2.0%CVE-2017-16110—weather.swlyons is a simple web server for weather updates. weather.swlyons is vulnerable to a directory traversal issue, giving an attackerEPSS 2.0%CVE-2017-16187—open-device creates a web interface for any device. open-device is vulnerable to a directory traversal issue, giving an attacker access to tEPSS 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-2017-16107—pooledwebsocket is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing "../" in the url.EPSS 2.0%CVE-2017-16163—dylmomo is a simple file server. dylmomo is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placinEPSS 2.0%CVE-2017-16123—welcomyzt is a simple file server. welcomyzt is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by plEPSS 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-2017-16140—lab6.brit95 is a file server. lab6.brit95 is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placiEPSS 2.0%CVE-2017-16134—http_static_simple is an http server. http_static_simple is vulnerable to a directory traversal issue, giving an attacker access to the fileEPSS 2.0%CVE-2017-16105—serverwzl is a simple http server. serverwzl is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by plEPSS 2.0%CVE-2017-16200—uv-tj-demo is a static file server. uv-tj-demo is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by EPSS 2.0%CVE-2017-16193—mfrs is a static file server. mfrs is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing "../EPSS 2.0%CVE-2017-16158—dcserver is a static file server. dcserver is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placEPSS 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%