Weaknesses of type CWE-22

5,830 results

Traversal de diretório (path traversal)

A aplicação recebe um caminho de arquivo fornecido pelo usuário e o usa para acessar arquivos sem validar adequadamente se o resultado fica dentro do diretório permitido. Um atacante injeta sequências como '../' ou '..' para "escapar" do diretório esperado e acessar arquivos sensíveis do sistema.

Example

Um site permite download de arquivos do diretório /uploads passando o nome via URL: download.php?file=documento.pdf. Um atacante envia file=../../etc/passwd e consegue ler arquivos fora de /uploads, porque o código não neutraliza a sequência '..'.

How to mitigate

Valide e canonicalize todo caminho fornecido pelo usuário antes de usá-lo: implemente uma whitelist de nomes permitidos, normalize caminhos para sua forma canônica, verifique se o resultado está dentro do diretório esperado, e use APIs de segurança da linguagem (ex: Path.normalize() + validação de prefix em Java, pathlib em Python).

CVE-2017-16165—calmquist.static-server is a static file server. calmquist.static-server is vulnerable to a directory traversal issue, giving an attacker acEPSS 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-2017-16164—desafio is a simple web server. desafio is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placingEPSS 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-2017-16122—cuciuci is a simple fileserver. cuciuci is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placingEPSS 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-2017-16150—wanggoujing123 is a simple webserver. wanggoujing123 is vulnerable to a directory traversal issue, giving an attacker access to the filesystEPSS 2.0%CVE-2017-16084—list-n-stream is a server for static files to list and stream local videos. list-n-stream v0.0.10 or lower is vulnerable to a directory travEPSS 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-2017-16089—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-2017-16223—nodeaaaaa is a static file server. nodeaaaaa is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by plEPSS 2.0%CVE-2017-16190—dcdcdcdcdc is a static file server. dcdcdcdcdc is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by EPSS 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-2017-16169—looppake is a simple http server. looppake is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placEPSS 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-2017-16101—serverwg is a simple http server. serverwg is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placEPSS 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-2017-16157—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-2017-16171—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-2017-16181—wintiwebdev is a static file server. wintiwebdev is vulnerable to a directory traversal issue, giving an attacker access to the filesystem bEPSS 2.0%