Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)
CWE-530 Variante Incompleto
Exposure of Backup File to an Unauthorized Control Sphere
This vulnerability occurs when backup or temporary files are stored in locations that unauthorized users can access, such as web directories.
Definição
What is CWE-530?
This vulnerability occurs when backup or temporary files are stored in locations that unauthorized users can access, such as web directories.
Developers and systems often create backup copies of live files, sometimes automatically renaming them with extensions like .bak, .old, or .~bk. When these files are left within a publicly accessible directory—like a web server's root—attackers can directly request and download them. This exposes source code, configuration files, or sensitive data that should remain protected.
Manually finding and securing every misplaced backup file across a complex application is error-prone. An ASPM platform like Plexicus can automatically detect these exposed files across your entire stack, using SAST and DAST techniques to identify the risk. Furthermore, Plexicus's AI-driven remediation can provide specific guidance on moving or deleting these files, helping you close the gap quickly and consistently.
Impacto no mundo real
Real-world CVEs caused by CWE-530
Ainda não há referências CVE públicas associadas a este CWE no catálogo da MITRE.
Como os atacantes a exploram
Trajeto do atacante passo a passo
- 1
Identificar um caminho de código que trata input não confiável sem validação.
- 2
Criar um payload que explora o comportamento inseguro — injeção, traversal, overflow ou abuso de lógica.
- 3
Entregar o payload através de um pedido normal e observar a reação da aplicação.
- 4
Iterar até que a resposta exponha dados, execute código do atacante ou escale privilégios.
Exemplo de código vulnerável
Vulnerable pseudo
A MITRE não publicou um exemplo de código para este CWE. O padrão abaixo é ilustrativo — consulte os Recursos para referências canónicas.
// Example pattern — see MITRE for the canonical references.
function handleRequest(input) {
// Untrusted input flows directly into the sensitive sink.
return executeUnsafe(input);
} Exemplo de código seguro
Secure pseudo
// Validate, sanitize, or use a safe API before reaching the sink.
function handleRequest(input) {
const safe = validateAndEscape(input);
return executeWithGuards(safe);
} What changed: the unsafe sink is replaced (or the input is validated/escaped) so the same payload no longer triggers the weakness.
Lista de verificação de prevenção
How to prevent CWE-530
- Policy Recommendations include implementing a security policy within your organization that prohibits backing up web application source code in the webroot.
Sinais de deteção
How to detect CWE-530
CWE-530
Don't catalog this weakness. Prove it's reachable.
Plexicus turns CWE catalogs into evidence: every CWE-pattern is matched against your real code graph, reach is proven on a sandbox clone, and verified findings ship as reviewed PRs.
Perguntas frequentes O que é o CWE-530?
Qual a gravidade do CWE-530?
Que linguagens ou plataformas são afetadas pelo CWE-530?
Como posso prevenir o CWE-530?
Como é que o Plexicus deteta e corrige o CWE-530?
Onde posso saber mais sobre o CWE-530?
Frequently asked questions
O que é o CWE-530?
This vulnerability occurs when backup or temporary files are stored in locations that unauthorized users can access, such as web directories.
Qual a gravidade do CWE-530?
A MITRE não publicou uma classificação de probabilidade de exploração para esta fraqueza. Trate-a como impacto médio até o seu modelo de ameaças provar o contrário.
Que linguagens ou plataformas são afetadas pelo CWE-530?
A MITRE não especificou as plataformas afetadas por este CWE — pode aplicar-se à maioria das stacks de aplicações.
Como posso prevenir o CWE-530?
Recommendations include implementing a security policy within your organization that prohibits backing up web application source code in the webroot.
Como é que o Plexicus deteta e corrige o CWE-530?
O motor SAST do Plexicus correlaciona a assinatura de fluxo de dados do CWE-530 em cada commit. Quando é encontrada uma correspondência, o nosso agente Codex Remedium abre um PR de correção com o código corrigido, testes e um resumo de uma linha para o revisor.
Onde posso saber mais sobre o CWE-530?
A MITRE publica a definição canónica em https://cwe.mitre.org/data/definitions/530.html. Pode também consultar a documentação da OWASP e do NIST para orientações adjacentes.
Fraquezas relacionadas
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Pronto para validar o que importa?
Pronto para validar o que importa.
O Plexicus é Proof-Driven AppSec: achados validados, compreensão contextual e remediação revisada — ancorada em evidência, escopada com você.