After I set up Imagekit connecting to S3 bucket correctly with IAM policy having the s3:GetObject to the bucket, I got an error accessing the image through Imagekit url.
The error message is
EACCES - Access denied by AWS S3. Check attached IAM policy on AWS
Imagekit actually needs more than just action s3:GetObject in the policy if your objects in the S3 buckets are server-side encrypted. It will kms:Decrypt as well. This is not in their documentation as 2022/06/16.
My IAM policy is like the following to make Imagekit access correctly.
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "ImagekitObjectAccess",
"Effect": "Allow",
"Action": [
"s3:GetObject"
],
"Resource": [
"arn:aws:s3:::[imagekit-bucket-name]/*"
]
},
{
"Sid": "ImagekitObjectEncryptingKeyAccess",
"Effect": "Allow",
"Action": [
"kms:Decrypt"
],
"Resource": [
"arn:aws:kms:us-east-1:187681360541:key/[object-encrypting-key-id]"
]
}
]
}
Related
I have a windows machine that need to sync a folder with S3.
I try
"C:\Program Files\amazon\AWSCLI\aws.exe" s3 sync components
s3://test/MyTest/ --acl public-read --
cache-control "public, must-revalidate, proxy-revalidate, max-age=1800"
got error "A client error (AccessDenied) occurred when calling the PutObject operation: Access Denied"
s3 rm and s3 cp for the same directory works fine.
I have the following permissions :
"Sid": "VisualEditor4",
"Effect": "Allow",
"Action": [
"s3:PutObject",
"s3:PutObjectAcl"
],
"Resource":
You need all this actions:
s3:DeleteObject
s3:GetBucketLocation
s3:GetObject
s3:ListBucket
s3:PutObject
Not only PutObject, for get work S3 Sync, use this policy:
{
"Version": "2012-10-17",
"Statement": [
{
"Resource": [
"arn:aws:s3:::YOUR_BUCKET_NAME",
"arn:aws:s3:::YOUR_BUCKET_NAME/*"
],
"Sid": "Stmt1464826210000",
"Effect": "Allow",
"Action": [
"s3:DeleteObject",
"s3:GetBucketLocation",
"s3:GetObject",
"s3:ListBucket",
"s3:PutObject"
]
}
]
}
Synchronizing files also requires READ permissions because the AWS Command-Line Interface (CLI) needs to view the existing files to determine whether they already exist or have been modified.
Thus, you will also need to grant ListBucket permission.
If you use aws s3 cp instead of aws s3 sync, then this is not required.
I'm trying to define a policy for a specific user.
I have several buckets in my S3 but I want to give the user access to some of them.
I created the following policy:
{
"Version":"2012-10-17",
"Statement":[
{
"Sid":"AddPerm",
"Effect":"Allow",
"Principal": "*",
"Action":["s3:GetObject",
"s3:ListBucket",
"s3:ListAllMyBuckets",
"s3:GetBucketLocation",
"s3:PutObject"],
"Resource":["arn:aws:s3:::examplebucket"]
}
when I try to add a list of resources like this:
"Resource":["arn:aws:s3:::examplebucket1","arn:aws:s3:::examplebucket2"]
I get access denied
The only option that works for me (I get buckets lists) is:
"Resource": ["arn:aws:s3:::*"]
whats the problem?
Some Amazon S3 API calls operate at the Bucket-level, while some operate at the Object-level. Therefore, you will need a policy like:
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": ["s3:ListBucket"],
"Resource": ["arn:aws:s3:::test"]
},
{
"Effect": "Allow",
"Action": [
"s3:PutObject",
"s3:GetObject",
"s3:DeleteObject"
],
"Resource": ["arn:aws:s3:::test/*"]
}
]
}
See: AWS Security Blog - Writing IAM Policies: How to Grant Access to an Amazon S3 Bucket
I found that its an AWS limitation.
There is no option get filtered list of buckets.
Once you give permissions to ListAllMyBuckets like this:
{
"Sid": "AllowUserToSeeBucketListInTheConsole",
"Action": ["s3:GetBucketLocation", "s3:ListAllMyBuckets"],
"Effect": "Allow",
"Resource": ["arn:aws:s3:::*"]
}
you get the list of all bucket (including buckets that you don't have permissions to it).
More info could be found here: https://aws.amazon.com/blogs/security/writing-iam-policies-grant-access-to-user-specific-folders-in-an-amazon-s3-bucket/
Few workarounds could be found here: Is there an S3 policy for limiting access to only see/access one bucket?
I ve been trying to copy a bucket content from S3 to another bucket following these instructions :
http://blog.vizuri.com/how-to-copy/move-objects-from-one-s3-bucket-to-another-between-aws-accounts
I have a destination bucket (where I want to copy the content) and a source bucket.
On the destination side, I created a new user with the following user's policy :
{
"Version": "2012-10-17",
"Statement": [
{
"Effect":"Allow",
"Action":[
"s3:ListAllMyBuckets"
],
"Resource":"arn:aws:s3:::*"
},
{
"Effect":"Allow",
"Action":[
"s3:GetObject"
],
"Resource":[
"arn:aws:s3:::to-destination/*"
]
},
{
"Effect": "Allow",
"Action": [
"s3:ListBucket",
"s3:GetBucketLocation"
],
"Resource": [
"arn:aws:s3:::to-destination"
]
}
]
}
and created the destination bucket.
On the source side I have the following policy for the bucket :
{
"Version": "2008-10-17",
"Id": "Policy****",
"Statement": [
{
"Sid": "Stmt****",
"Effect": "Allow",
"Principal": "*",
"Action": "s3:GetObject",
"Resource": "*****"
}
]
}
When I try to copy the content of the source to destination using the aws cli :
aws s3 sync s3://source-bucket-name s3://destination-bucket-name
I always get this error
An error occurred (AccessDenied) when calling the ListObjects operation: Access Denied
Completed 1 part(s) with ... file(s) remaining
What am I doing wrong ? Is there a problem in the way my policies are drafted ?
UPDATE
I also tried following this post that suggests updating source bucket policy and destination bucket policy :
https://serverfault.com/questions/556077/what-is-causing-access-denied-when-using-the-aws-cli-to-download-from-amazon-s3
but I am still getting the same error on the command line
Have you configured your account from the CLI using $ aws configure ?
And you can use the policy generator to verify if the custom policy you mentioned above is built correctly.
This error due to SSL verification. Use this code to transfer objects to new bucket with no verification of SSL.
aws s3 sync s3://source-bucket-name s3://destination-bucket-name --no-verify-ssl
use --no-verify-ssl
What are the appropriate S3 permissions to deploy an Elastic Beanstalk app using CodeShip? When deploying a new version to a tomcat app I get these errors:
Service:Amazon S3, Message:You do not have permission to perform the
's3:ListBucket' action. Verify that your S3 policies and your ACLs
allow you to perform these actions.
Service:Amazon S3, Message:You do
not have permission to perform the 's3:GetObject' or 's3:ListBucket'
action. Verify that your S3 policies and your ACLs allow you to
perform these actions.
If I give the CodeShip user full access to S3 everything works, but this is not ideal. The current S3 permissions for my CodeShip user are
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"s3:PutObject",
"s3:PutObjectAcl",
"s3:GetObject",
"s3:GetObjectAcl",
"s3:ListBucket",
"s3:DeleteObject",
"s3:GetBucketPolicy"
],
"Resource": [
"arn:aws:s3:::codeshipbucket/*"
]
}
]
}
My S3 bucket I have given CodeShip is a subfolder under codeshipbucket if it matters.
What are appropriate permissions?
These are the S3 permissions we had to give the IAM user we use with Codeship:
{
"Action": [
"s3:CreateBucket",
"s3:GetObject"
],
"Effect": "Allow",
"Resource": "*"
},
{
"Action": [
"s3:ListBucket",
"s3:GetObjectAcl",
"s3:GetBucketPolicy",
"s3:DeleteObject",
"s3:PutObject",
"s3:PutObjectAcl"
],
"Effect": "Allow",
"Resource": [
"arn:aws:s3:::elasticbeanstalk-[region]-[account-id]",
"arn:aws:s3:::elasticbeanstalk-[region]-[account-id]/*"
]
}
We executed eb deploy --debug and added the permissions one-by-one.
In our internal test we've been able to deploy to ElasticBeanstalk with just the following S3 permissions
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"s3:PutObject"
],
"Resource": [
"arn:aws:s3:::YOUR_S3_BUCKET_NAME/*"
]
}
]
}
And this is what we currently recommend in our documentation available at https://codeship.com/documentation/continuous-deployment/deployment-to-elastic-beanstalk/#s3
That said, one of our awesome users published a very extensive guide on how to deploy to Elastic Beanstalk, which is available at http://nudaygames.squarespace.com/blog/2014/5/26/deploying-to-elastic-beanstalk-from-your-continuous-integration-system and recommends a broader set of S3 permissions.
Disclaimer: I work for Codeship, but you probably already guessed so from my answer.
I have setup an unauthenticated role under Amazon Cognito Identity pool. My goal is that guest users of my mobile app would be able to upload debugging logs (small text files) to my S3 bucket so I can troubleshoot issues. I notice I would get "Access Denied" from S3 if I don't modify my S3 bucket permission. If I add allow "Everyone" to have "Upload/Delete" privilege, the file upload succeeded. My concern is someone would then be able to upload large files to my bucket and cause a security issue. What is the recommend configuration for my need above? I am a newbie to S3 and Cognito.
I am using Amazon AWS SDK for iOS but I suppose this question is platform neutral.
Edit:
My policy is as follows:
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": "iam:GetUser",
"Resource": "*"
},
{
"Effect": "Allow",
"Action": [
"s3:ListAllMyBuckets"
],
"Resource": "*"
},
{
"Effect": "Allow",
"Action": [
"s3:CreateBucket",
"s3:DeleteBucket",
"s3:DeleteObject",
"s3:GetBucketLocation",
"s3:GetObject",
"s3:ListBucket",
"s3:PutObject"
],
"Resource": ["arn:aws:s3:::import-to-ec2-*", "arn:aws:s3:::<my bucket name>/*"]
}
]
}
You don't need to modify the S3 bucket permission, but rather the IAM role associated with your identity pool. Try the following:
Visit the IAM console.
Find the role associated with your identity pool.
Attach a policy similar to the following to your role:
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": ["s3:PutObject"],
"Resource": ["arn:aws:s3:::MYBUCKET/*"]
}
]
}
Replace MYBUCKET with your bucket name
Access your bucket as normal from your application use the iOS SDK and Cognito
You may want to consider limiting permissions further, including ${cognito-identity.amazonaws.com:sub} to partition your users, but the above policy will get you started.
The answer above is incomplete as of 2015, you need to authorize BOTH the role AND the bucket polity in S3 to authorize that Role to write to the bucket. Use s3:PutObject in both cases. The console has wizards for both cases
As #einarc said (cannot comment yet), to make it works I had to edit role and Bucket Policy. This is good enough for testing:
Bucket Policy:
{
"Id": "Policy1500742753994",
"Version": "2012-10-17",
"Statement": [
{
"Sid": "Stmt1500742752148",
"Action": "s3:*",
"Effect": "Allow",
"Resource": "arn:aws:s3:::admin1.user1",
"Principal": "*"
}
]
}
Authenticated role's policy:
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"s3:*"
],
"Resource": [
"arn:aws:s3:::*"
]
}
]
}