config where cloud.type = ‘aws’ AND api.name=’aws-s3api-get-bucket-acl’ AND json.rule="((((acl.grants[? (@.grantee==’AllUsers’)] size > 0) or policyStatus.isPublic is true) and publicAccessBlockConfiguration does not exist) or ((acl.grants[?

An S3 bucket within AWS has generated an alert by violating the Prisma Cloud Default policy “AWS

S3 buckets are accessible to public”.

The policy definition follows:

config where cloud.type = ‘aws’ AND api.name=’aws-s3api-get-bucket-acl’ AND json.rule="((((acl.grants[? (@.grantee==’AllUsers’)] size > 0) or policyStatus.isPublic is true) and publicAccessBlockConfiguration does not exist) or ((acl.grants[?(@.grantee==’AllUsers’)] size > 0) and publicAccessBlockConfiguration.ignorePublicAcis is false) or (policyStatus.isPublic is true and publicAccessBlockConfiguration.restrictPublicBuckets is false)) and websiteConfiguration does not exist"

Why did this alert get generated?
A . an event within the cloud account
B . network traffic to the S3 bucket
C . configuration of the S3 bucket
D . anomalous behaviors

View Answer

Answer: C

Explanation:

The alert "AWS S3 buckets are accessible to public" is generated due to the configuration of the S3 bucket, which has been set in a way that allows public access. The policy definition provided checks for various conditions that would make an S3 bucket publicly accessible, such as grants to ‘AllUsers’, the absence of a ‘publicAccessBlockConfiguration’, or specific configurations that do not restrict public access. Therefore, the alert is triggered by the configuration settings of the S3 bucket that violate the policy’s criteria for public accessibility.