Curious why Prisma Cloud needs "kms:decrypt" permission for "*" in AWS

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Curious why Prisma Cloud needs "kms:decrypt" permission for "*" in AWS

L1 Bithead

While onboarding our AWS account using this template, I had a developer ask why "kms:decrypt" is granted on all "*" resources. I'm wondering if anyone knows the reason so that I can relay it to them.

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Accepted Solutions

L2 Linker

Hi, I hope you are doing well. The "kms:decrypt" permission is needed to extract serverless function environment variables (part of lambda:ListFunctions query). I've seen while working with customers, that the function scans fail because of a lack of access to kms resources. It might seem like more than should be needed, but sometimes the artifact simply can't be fully observed without it.

 

It is sometimes also needed to read encrypted images in ECR. I hope this answers your question.

Muhammad Wahaaj Siddiqui | Sr. Technical Support Engineer - Prisma Cloud Compute | PCCSE, CKA, CKS, AWS SysOps, AWS DevOps Professional

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2 REPLIES 2

L2 Linker

Hi, I hope you are doing well. The "kms:decrypt" permission is needed to extract serverless function environment variables (part of lambda:ListFunctions query). I've seen while working with customers, that the function scans fail because of a lack of access to kms resources. It might seem like more than should be needed, but sometimes the artifact simply can't be fully observed without it.

 

It is sometimes also needed to read encrypted images in ECR. I hope this answers your question.

Muhammad Wahaaj Siddiqui | Sr. Technical Support Engineer - Prisma Cloud Compute | PCCSE, CKA, CKS, AWS SysOps, AWS DevOps Professional

Thank you very much!

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