I was moving S3 bucket from source bucket to destination bucket.
below is reference to do the work.
https://aws.amazon.com/premiumsupport/knowledge-center/copy-s3-objects-account/?nc1=h_ls
but I've got error while making policy. error message is Policy has invalid resource
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Principal": "*",
"Action": [
"s3:ListBucket",
"s3:GetObject"
],
"Resource": [
"arn:aws:s3:::<SOURCE_BUCKET_NAME>",
"arn:aws:s3:::<SOURCE_BUCKET_NAME>/*"
]
},
{
"Effect": "Allow",
"Principal": "*",
"Action": [
"s3:ListBucket",
"s3:PutObject",
"s3:PutObjectAcl"
],
"Resource": [
"arn:aws:s3:::<DESTINATION_BUCKET_NAME>",
"arn:aws:s3:::<DESTINATION_BUCKET_NAME>/*"
]
}
]
}
I had changed policy for test and It worked. difference is as follows.
arn:aws:s3:::<SOURCE_BUCKET_NAME> > arn:aws:s3:::<DESTINATION_BUCKET_NAME>
I don't know why It doesn't work if I fill out my SOURCE_BUCKET_NAME.
I swear source bucket name is not wrong. you might think that question is like a fool and I also assume It'll be nothing but I couldn't find any point. Please give me a hand if you know the answer. thanks for reading :)
+ be added
bucket policy that I attached to the source bucket.
replaced principal is ARN of the IAM identity in target(destination) account.
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "DelegateS3Access",
"Effect": "Allow",
"Principal": {
"AWS": "arn:aws:iam::xxxxxxxxxxxx:user/ws.kim"
},
"Action": [
"s3:ListBucket",
"s3:GetObject"
],
"Resource": [
"arn:aws:s3:::<SOURCE_BUCKET_NAME>/*",
"arn:aws:s3:::<SOURCE_BUCKET_NAME>"
]
}
]
}
The reason is that this is invalid bucket policy. Instead it should be managed IAM policy that you create and attach to IAM role or user.
Please check the How can I copy S3 objects from another AWS account? article again and you will be able to properly setup this policy.
I am trying to give users read/write/list permissions to certain buckets and my IAM policy is:
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"s3:ListBucket"
],
"Resource": [
"arn:aws:s3:::kl-bucket1",
"arn:aws:s3:::kl-bucket2",
"arn:aws:s3:::kl-bucket3",
"arn:aws:s3:::kl-bucket4"
]
},
{
"Effect": "Allow",
"Action": [
"s3:PutObject",
"s3:GetObject"
],
"Resource": [
"arn:aws:s3:::kl-bucket3",
"arn:aws:s3:::kl-bucket4"
]
}
]
}
When I try to write to bucket4 I get an 403 error, however if I give full permission like below then I am able to write to bucket4.
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": "s3:*",
"Resource": "*"
}
]
}
What could be the issue?
P.S. While this issue is similar to S3: How to grant access to multiple buckets? the actual problem is different.
The issue was that I also setting the Access control after PutObject, while the IAM policy was setting that permission.
#Asarluhi's answer helped.
Have modified the Action to:
"Action": [
"s3:GetObject",
"s3:PutObject",
"s3:PutObjectAcl"
],
I am using inline policy for grant access to s3 bucket for IAM user
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "Stmt1513073615000",
"Effect": "Allow",
"Action": [
"s3:*"
],
"Resource": [
"arn:aws:s3:::newput-test"
]
}
]
}
but on extended s3 browser when I use the access key id and secret access key of particular IAM user is not listing my bucket.but when I pass * in resources It works fine
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "Stmt1513073615000",
"Effect": "Allow",
"Action": [
"s3:*"
],
"Resource": [
"*"
]
}
]
}
but the problem is its giving access to all the s3 bucket to IAM user.
but I want to give access only single bucket anybody have an idea how to achieve this.
Try something like this
{
"Statement": [
{
"Effect": "Allow",
"Action": "s3:ListAllMyBuckets",
"Resource": "arn:aws:s3:::*"
},
{
"Effect": "Allow",
"Action": "s3:*",
"Resource": [
"arn:aws:s3:::mys3bucket",
"arn:aws:s3:::mys3bucket/*"
]
}
]
}
Its been explained here.
http://www.fizerkhan.com/blog/posts/Restrict-user-access-to-Single-S3-Bucket-using-Amazon-IAM.html
When you work with the team, you might want to restrict an access to a single S3 bucket to specific users. How can I achieve this?
The following code is not working. The user still has full permission.
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": "s3:ListAllMyBuckets",
"Resource": "arn:aws:s3:::*"
},
{
"Effect": "Allow",
"Action": "s3:*",
"Resource": [
"arn:aws:s3:::Privatebacket",
"arn:aws:s3:::Privatebacket/*"
]
}
]
}
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"s3:GetBucketLocation",
"s3:ListAllMyBuckets"
],
"Resource": "arn:aws:s3:::*"
},
{
"Effect": "Allow",
"Action": "s3:*",
"Resource": [
"arn:aws:s3:::YOUR-BUCKET",
"arn:aws:s3:::YOUR-BUCKET/*"
]
}
]
}
https://www.serverkaka.com/2018/05/grant-access-to-only-one-s3-bucket-to-aws-user.html
Try the below mentioned link. You can grant user specific folder permissions using IAM policies.
https://aws.amazon.com/blogs/security/writing-iam-policies-grant-access-to-user-specific-folders-in-an-amazon-s3-bucket/
You can add an inline policy for that IAM user. You can set a 'deny' policy to that specific s3 bucket.
Policy Document:
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "Stmt1497522841000",
"Effect": "Deny",
"Action": [
"s3:*"
],
"Resource": [
"arn:aws:s3:::mjzone-private"
]
}
]
}
I'm following the instructions from this answer to generate the follow S3 bucket policy:
{
"Id": "Policy1495981680273",
"Version": "2012-10-17",
"Statement": [
{
"Sid": "Stmt1495981517155",
"Action": [
"s3:GetObject"
],
"Effect": "Allow",
"Resource": "arn:aws:s3:::surplace-audio",
"Principal": "*"
}
]
}
I get back the following error:
Action does not apply to any resource(s) in statement
What am I missing from my policy?
From IAM docs, http://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements.html#Action
Some services do not let you specify actions for individual resources; instead, any actions that you list in the Action or NotAction element apply to all resources in that service. In these cases, you use the wildcard * in the Resource element.
With this information, resource should have a value like below:
"Resource": "arn:aws:s3:::surplace-audio/*"
Just removing the s3:ListBucket permission wasn't really a good enough solution for me, and probably isn't for many others.
If you want the s3:ListBucket permission, you need to just have the plain arn of the bucket (without the /* at the end) as this permission applies to the bucket itself and not items within the bucket.
As shown below, you have to have the s3:ListBucket permission as a separate statement from the permissions pertaining to items within the bucket like s3:GetObject and s3:PutObject:
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"s3:ListBucket"
],
"Principal": {
"AWS": "[IAM ARN HERE]"
},
"Resource": "arn:aws:s3:::my-bucket-name"
},
{
"Effect": "Allow",
"Action": [
"s3:GetObject",
"s3:PutObject"
],
"Principal": {
"AWS": "[IAM ARN HERE]"
},
"Resource": "arn:aws:s3:::my-bucket-name/*"
}
]
}
Error Action does not apply to any resource(s) in statement
Simply it means that the action (you wrote in policy) doesn't apply to the resource. I was trying to make public my bucket so that anybody can download from my bucket. I was getting error until I remove ( "s3:ListBucket") from my statement.
{
"Id": "Policyxxxx961",
"Version": "2012-10-17",
"Statement": [
{
"Sid": "Stmtxxxxx4365",
"Action": [
"s3:GetObject",
"s3:ListBucket",
"s3:PutObject"
],
"Effect": "Allow",
"Resource": "arn:aws:s3:::bucket-name/*",
"Principal": "*"
}
]
}
Because list bucket doesn't apply inside the bucket, thus by deleting this action policy worked fine.
Just ran into this issue and found a shorter solution for those that want to have ListBucket and GetObject in the same policy. The important thing is to list both the bucket-name and bucket-name/* under Resource.
{
"Id": "Policyxxxx961",
"Version": "2012-10-17",
"Statement": [
{
"Sid": "Stmtxxxxx4365",
"Action": [
"s3:GetObject",
"s3:ListBucket",
"s3:PutObject"
],
"Effect": "Allow",
"Resource": [
"arn:aws:s3:::bucket-name",
"arn:aws:s3:::bucket-name/*"
],
"Principal": "*"
}
]
}
To fix this issue, what you need to do in policy rule, locate the Resource, and add your arn bucket in array, one with * and the second on without * at the end. This will fix the error.
{
"Version": "2012-10-17",
"Id": "Policy3783783783738",
"Statement": [
{
"Sid": "Stmt1615891730703",
"Effect": "Allow",
"Principal": {
"AWS": "arn:aws:iam::76367367633:user/magazine-demo-root-user"
},
"Action": [
"s3:ListBucket",
"s3:ListBucketVersions",
"s3:GetBucketLocation",
"s3:DeleteObject",
"s3:AbortMultipartUpload",
"s3:Get*",
"s3:Put*"
],
"Resource": [
"arn:aws:s3:::magazine-demo",
"arn:aws:s3:::magazine-demo/*"
]
}
]
}
Just do one change in json policy resource.
"Resource": ["arn:aws:s3:::bucket-name/*"]
Note : Add /* after bucket-name
Ref Docs :
https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements.html
I have also faced the similar issue while creating the bucket
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "AddPerm",
"Effect": "Allow",
"Principal": "*",
"Action": [
"s3:GetObject"
],
"Resource": [
"arn:aws:s3:::mrt9949"
]
}
]
}
I have changed the above code to
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "AddPerm",
"Effect": "Allow",
"Principal": "*",
"Action": [
"s3:GetObject"
],
"Resource": [
"arn:aws:s3:::mrt9949/*"
]
}
]
}
add /* to your bucket name it will solve the issue
Here my bucket name is mrt9949
In my case the solution to this error was trying to remove some of Actions that I was applying. Some of them are not relevant to, or cannot work with this resource.
In this case it wouldn't let me include these:
GetBucketAcl
ListBucket
ListBucketMultipartUploads
Whenever you are trying to apply use bucket policies. Remember this thing, If you are using actions like "s3:ListBucket", "s3:GetBucketPolicy", "s3:GetBucketAcl" etc. which are related to bucket, the resource attribute in policy should be mentioned as <"Resource": "arn:aws:s3:::bucket_name">.
Ex.
{
"Version": "2012-10-17",
"Id": "Policy1608224885249",
"Statement": [
{
"Sid": "Stmt1608226298927",
"Effect": "Allow",
"Principal": "*",
"Action": [
"s3:GetBucketPolicy",
"s3:GetBucketAcl",
"s3:ListBucket"
],
"Resource": "arn:aws:s3:::bucket_name"
}
]
}
If you are using actions like "s3:GetObject", "s3:DeleteObject", "s3:GetObject" etc. which are related to object, the resource attribute in policy should be mentioned as <"Resource": "arn:aws:s3:::bucket_name/*">.
ex.
{
"Id": "Policy1608228066771",
"Version": "2012-10-17",
"Statement": [
{
"Sid": "Stmt1608228057071",
"Action": [
"s3:DeleteObject",
"s3:GetObject"
],
"Effect": "Allow",
"Resource": "arn:aws:s3:::bucket_name/*",
"Principal": "*"
}
]
}
Finally if you are using actions like "s3:ListBucket", "s3:GetObject" etc. these actions are related to both bucket and object then the resource attribute in policy should be mentioned as <"Resource": ["arn:aws:s3:::bucket_name/*", "Resource": "arn:aws:s3:::bucket_name">.
ex.
{
"Version": "2012-10-17",
"Id": "Policy1608224885249",
"Statement": [
{
"Sid": "Stmt1608226298927",
"Effect": "Allow",
"Principal": "*",
"Action": [
"s3:ListBucket",
"s3:GetObject"
],
"Resource": [
"arn:aws:s3:::bucket_name",
"arn:aws:s3:::bucket_name/*"
]
}
] }
Go to Amazon S3 in your instance.
Go to Permissions -> Public Access tab.
Select Edit and uncheck Block all public access and save.
You will see 'Public' tag in Permission tab and Access Control List.
You might have several policy statements and this error is a very generic one. Best is to comment all other statements except any one (like just GetObject, or ListBuckets, Or PutObject) and execute the code and see. If it works fine, it means the ARN path is right. Else, the ARN should include the bucket name alone or a bucketname with /*.
Some resources like ListBucket accept ARN with the full name like "arn:aws:s3:::bucket_name", while GetObject or PutObject expects a /* after the bucket_name. Change the ARNs according to the service and it should work now!
You have to check the pattern of the arn defined under the Resource tag for the Policy-
"Resource": "arn:aws:s3:::s3mybucketname/*"
With the addition of "/*" at the end would help to resolve the issue if you face it even after having your Public Access Policy Unblocked for your Bucket.
From AWS > Documentation > AWS Identity and Access Management > User Guide
https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements_resource.html
It is clearly defined in a note, Some services do not let you specify actions for individual resources.
you use the wildcard * in the Resource element
"Resource": "arn:aws:s3:::surplace-audio/*"
You can also configure ListBuckets for each folder, like so
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "AllowSESPuts-1521238702575",
"Effect": "Allow",
"Principal": {
"Service": "ses.amazonaws.com"
},
"Action": "s3:PutObject",
"Resource": "arn:aws:s3:::buckets.email/*",
"Condition": {
"StringEquals": {
"aws:Referer": "[red]"
}
}
},
{
"Sid": "Stmt1586754972129",
"Effect": "Allow",
"Principal": {
"AWS": "arn:aws:iam::596322993031:user/[red]"
},
"Action": "s3:ListBucket",
"Resource": "arn:aws:s3:::buckets.email",
"Condition": {
"StringEquals": {
"s3:delimiter": "/",
"s3:prefix": [
"",
"domain.co",
"domain.co/user"
]
}
}
},
{
"Sid": "Stmt1586754972129",
"Effect": "Allow",
"Principal": {
"AWS": "arn:aws:iam::596322993031:user/[red]"
},
"Action": "s3:ListBucket",
"Resource": "arn:aws:s3:::buckets.email",
"Condition": {
"StringLike": {
"s3:prefix": "domain.co/user/*"
}
}
},
{
"Effect": "Allow",
"Principal": {
"AWS": "arn:aws:iam::596322993031:user/[red]"
},
"Action": [
"s3:GetObject",
"s3:PutObject",
"s3:DeleteObject"
],
"Resource": "arn:aws:s3:::buckets.email/domain.co/user/*"
}
]
}
These rules are used together with SES to receive an email, but allows an external user to view the files that were put in the bucket by SES.
I followed the instructions from here: https://aws.amazon.com/blogs/security/writing-iam-policies-grant-access-to-user-specific-folders-in-an-amazon-s3-bucket/
Also, you must specify prefix as domain.co/user/ WITH slash at the end when using the SDK, otherwise you'll get access denied. hope it helps anyone
This is so simple just add "/*" at the end. You have given only the root directory link, but the action needs to be applied to the object.
Type,
"Resource": "arn:aws:s3:::surplace-audio/*"
I found that my ListBuckets was not working because the IAM Principle did not have ListAllMyBuckets permission.