Awesome
AOSP-DownloadProviderHeadersDumper
PoC Exploiting Headers Disclosure in Android's Download Provider (CVE-2018-9546)
Security Advisory
https://ioactive.com/wp-content/uploads/2019/04/IOActive-Security-Advisory-Androids-Download-Provider-Request-Headers-Disclosure-CVE-2018-9546.pdf
More Information
https://ioactive.com/multiple-vulnerabilities-in-androids-download-provider-cve-2018-9468-cve-2018-9493-cve-2018-9546/