### [CVE-2019-17495](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17495)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

A Cascading Style Sheets (CSS) injection vulnerability in Swagger UI before 3.23.11 allows attackers to use the Relative Path Overwrite (RPO) technique to perform CSS-based input field value exfiltration, such as exfiltration of a CSRF token value. In other words, this product intentionally allows the embedding of untrusted JSON data from remote servers, but it was not previously known that <style>@import within the JSON data was a functional attack method.

### POC

#### Reference
- https://github.com/tarantula-team/CSS-injection-in-Swagger-UI
- https://github.com/tarantula-team/CSS-injection-in-Swagger-UI
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://www.oracle.com/security-alerts/cpuoct2020.html

#### Github
- https://github.com/0xT11/CVE-POC
- https://github.com/SecT0uch/CVE-2019-17495-test
- https://github.com/developer3000S/PoC-in-GitHub
- https://github.com/ffflabs/loopback-swaggerUI4-example
- https://github.com/hectorgie/PoC-in-GitHub
- https://github.com/ossf-cve-benchmark/CVE-2019-17495
- https://github.com/strongloop/loopback-component-explorer