GCPBucketBrute
A script to enumerate Google Storage buckets, determine what access you have to them, and determine if they can be privilege escalated.
| Category | Penetration Testing Tools |
|---|---|
| GitHub Stars | 494 |
| Last Commit | 1 year ago |
| This page updated | a month ago |
| Pricing Details | Free and open-source |
| Target Audience | Security professionals, penetration testers, and cloud security engineers. |
GCPBucketBrute is designed for identifying and exploiting misconfigured Google Storage buckets, a common vulnerability in Google Cloud Platform (GCP) environments. This tool is designed to enumerate Google Storage buckets, determine the access permissions associated with them, and identify potential privilege escalation vulnerabilities.
Technically, GCPBucketBrute operates by generating a list of permutations from a provided keyword, which are then used to scan for the existence of Google Storage buckets. The script can run in various authentication modes: unauthenticated, using a GCP user account, or with a service account. Even when credentials are supplied, the initial enumeration is performed unauthenticated, with subsequent permission checks using the TestIamPermissions API to determine authenticated access.
The tool uses subprocesses for parallel execution, allowing for customizable concurrency levels, which can significantly speed up the enumeration process but also increases the rate of requests to Google APIs. This approach is particularly useful for large-scale scans but may incur higher resource usage and potential rate limiting issues.
Operationally, GCPBucketBrute requires Python 3 and a few additional libraries, making it straightforward to install and run. The script outputs detailed information about the discovered buckets, including any permissions the user has and whether the bucket is vulnerable to privilege escalation. This output is crucial for identifying and mitigating security risks associated with misconfigured buckets.
However, there are operational considerations to note. For instance, the tool's performance can degrade if the number of subprocesses is set too high, leading to increased load on the system and potential API rate limits. Additionally, the script's functionality on Windows is limited to unauthenticated scans due to issues with the subprocess module.