> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/pt-br/web/xss/dom-xss-document-write-with-location-search.md).
# XSS DOM document.write com location.search
Notas sobre XSS DOM document.write com location.search para laboratórios da PortSwigger Web Security Academy, incluindo fluxo de exploração, teste de payloads, validação no Burp Suite e contexto de remediação.
### XSS de DOM no sink document.write usando a source location.search
Este laboratório contém uma vulnerabilidade de XSS no DOM na funcionalidade de rastreamento da consulta de busca. A página usa `document.write` para escrever dados de `location.search` no DOM, o que pode ser नियंत्रado via URL.
**Descrição da vulnerabilidade**/ `document.write` é chamada com a `location.search` string sem sanitização. Como a entrada vem diretamente da URL, um invasor pode injetar HTML/JS na página manipulando `location.search`.
**Objetivo para a resolução** Realize um ataque XSS no lado do DOM que chame a `alert()` função quando a página for carregada.
**Comentários/índices**/ O código gera algo como uma `` tag contendo um `searchTerms` parâmetro entre aspas, por exemplo:
```html
```
Se você fechar a `` tag e as aspas, você pode inserir conteúdo HTML/JS arbitrário.
**Exemplos de payloads testados (fornecidos)**/ Feche a tag e injete HTML:
```html
">
hack
```
Feche a tag e injete um script para acionar `alerta`:
```javascript
">
```
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