> 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-in-href-attribute-with-jquery-location-search.md).

# XSS DOM em um atributo href com jQuery e location.search

Notas sobre XSS DOM em um atributo href com jQuery e location.search para laboratórios da PortSwigger Web Security Academy, incluindo fluxo de exploração, teste de payloads, validação no Burp Suite e contexto de remediação c

### DOM XSS no atributo href de âncora do JQuery usando a fonte location.search

Vulnerabilidade de DOM XSS na página de feedback. O site usa a `$` função do jQuery para selecionar um `<a>` elemento (o link de volta) e substitui seu `href` atributo por um valor extraído de `location.search`. Esse valor pode ser controlado via URL.

**Estudo do laboratório:**/ Faça o link "voltar" disparar `alert(document.cookie)` quando você clicar nele (execute um alerta contendo os cookies na página).

<figure><img src="https://783634792-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-ab4262062acd2338796992d1123d759e2b22617c%2F%7BDEA680DF-93BC-4DBC-8C56-DE289A554F15%7D.png?alt=media" alt=""><figcaption></figcaption></figure>

**Observações:**

* O botão "voltar" refere-se à raiz do site; ele está conectado a um `returnPath` parâmetro na URL.
* Ao modificar `returnPath`, você pode definir o destino do `href` link.

Use um esquema JavaScript em `href`:

```javascript
javascript:alert(0)
```

Para recuperar o cookie da sessão e exibir:

```javascript
javascript:alert(document.cookie)
```

<figure><img src="https://783634792-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-fbefe0816b47e04b0c660b746beea1a405f8203b%2F%7B1F6159B5-826F-4C62-B7BD-553F80FC3367%7D.png?alt=media" alt=""><figcaption></figcaption></figure>


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