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Google Cloud Platform VRP Prize Writeup

Published Fri, Nov 29th, 2019

Platforms

gcp

Summary

A vulnerability was discovered in Google Cloud Platform's AI Hub service, allowing unrestricted file uploads. This could potentially lead to bypassing Same-Origin Policy by uploading SWF files, enabling CSRF attacks across browsers, and exploiting CVE-2014-8453 on IE with Adobe Reader installed. The issue resulted in a $1337 bounty reward.

Affected Services

AI Hub

Remediation

None required

Tracked CVEs

CVE-2014-8453

References

Contributed by https://github.com/korniko98

Entry Status

Stub (AI-Generated)

Disclosure Date

-

Exploitability Period

-

Known ITW Exploitation

-

Detection Methods

Monitor for unusual file uploads or unexpected file types being served from the AI Hub service. Implement strict file type restrictions and content disposition headers for uploaded files.

Piercing Index Rating

-

Discovered by

Missoum Said