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Announcing the winners of the 2020 GCP VRP Prize
17 March 2021
Posted by Harshvardhan Sharma, Information Security Engineer, Google
We first
announced
the GCP VRP Prize in 2019 to encourage security researchers to focus on the security of Google Cloud Platform (GCP), in turn helping us make GCP more secure for our users, customers, and the internet at large. In the
first iteration
of the prize, we awarded $100,000 to the winning write-up about a security vulnerability in GCP. We also announced that we would reward the top 6 submissions in 2020 and increased the total prize money to $313,337.
2020 turned out to be an
amazing year
for the Google Vulnerability Reward Program. We received many high-quality vulnerability reports from our talented and prolific vulnerability researchers.
Vulnerability reports received year-over-year
This trend was reflected in the submissions we received for the GCP VRP Prize. After careful evaluation of the many innovative and high-impact vulnerability write-ups we received this year, we are excited to announce the winners of the 2020 GCP VRP Prize:
First Prize, $133,337: Ezequiel Pereira for the report and write-up
RCE in Google Cloud Deployment Manager
. The bug discovered by Ezequiel allowed him to make requests to internal Google services, authenticated as a privileged service account. Here's a video that gives more details about the bug and the discovery process.
Second Prize, $73,331: David Nechuta for the report and write-up
31k$ SSRF in Google Cloud Monitoring led to metadata exposure
. David found a Server-side Request Forgery (SSRF) bug in Google Cloud Monitoring's uptime check feature. The bug could have been used to leak the authentication token of the service account used for these checks.
Third Prize, $73,331: Dylan Ayrey and Allison Donovan for the report and write-up
Fixing a Google Vulnerability
. They pointed out issues in the default permissions associated with some of the service accounts used by GCP services.
Fourth Prize, $31,337: Bastien Chatelard for the report and write-up
Escaping GKE gVisor sandboxing using metadata
. Bastien discovered a bug in the GKE gVisor sandbox's network policy implementation due to which the Google Compute Engine metadata API was accessible.
Fifth Prize, $1,001: Brad Geesaman for the report and write-up
CVE-2020-15157 "ContainerDrip" Write-up
. The bug could allow an attacker to trick containerd into leaking instance metadata by supplying a malicious container image manifest.
Sixth Prize, $1,000: Chris Moberly for the report and write-up
Privilege Escalation in Google Cloud Platform's OS Login
. The report demonstrates how an attacker can use DHCP poisoning to escalate their privileges on a Google Compute Engine VM.
Congratulations to all the winners! If we have piqued your interest and you would like to enter the competition for a GCP VRP Prize in 2021, here’s a reminder on the requirements.
Find a vulnerability in a GCP product (check out
Google Cloud Free Program
to get started)
Report it to the
VRP
(you might get rewarded for it on top of the GCP VRP Prize!)
Create a public write-up
Submit it
here
Make sure to submit your VRP reports and write-ups before December 31, 2021 at 11:59 GMT. Good luck! You can learn more about the prize for this year
here
. We can't wait to see what our talented vulnerability researchers come up with this year!
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