Can't set S3 policy for HEAD operations (403 - Forbidden)











up vote
0
down vote

favorite












I'm using Django with the django-storages library to upload my model's files to S3 and need to add a policy to block direct downloading from the bucket's URLs.



I have achieved that by setting the policy below (check the Referer) but this resulted in a problem when I make use of the library's auto-rename function. My current policy:



{
"Version": "2012-10-17",
"Id": "Policy1542209806458",
"Statement": [
{
"Sid": "Block access globally except by the indicated referers.",
"Effect": "Deny",
"Principal": "*",
"Action": [
"s3:GetObject"
],
"Resource": "arn:aws:s3:::my-bucket/subfolder/*",
"Condition": {
"StringNotLike": {
"aws:Referer": [
"http://ref.localhost:8000/*",
"http://localhost:8000/*"
]
}
}
}
]
}


By debugging I found out that when the library tries to execute a HEAD request to get the existent file information (which will indicate the need for renaming) the response is a HTTP 403 error. I have tried including the Actions below (from other sources and the documentation) to have a more permissive access but the same problem persists.



"Action": [
"s3:GetObject",
"s3:GetObjectVersion",
"s3:GetObjectAcl",
"s3:PutObject",
"s3:PutObjectAcl",
"s3:DeleteObject",
"s3:DeleteObjectVersion"
]


I have no such problem when adding new files with unique names, only when renaming is necessary.










share|improve this question






















  • Setting "Action": "*" also does not solve the problem. The only way it worked was by removing the policy.
    – ihhcarus
    Nov 19 at 17:38















up vote
0
down vote

favorite












I'm using Django with the django-storages library to upload my model's files to S3 and need to add a policy to block direct downloading from the bucket's URLs.



I have achieved that by setting the policy below (check the Referer) but this resulted in a problem when I make use of the library's auto-rename function. My current policy:



{
"Version": "2012-10-17",
"Id": "Policy1542209806458",
"Statement": [
{
"Sid": "Block access globally except by the indicated referers.",
"Effect": "Deny",
"Principal": "*",
"Action": [
"s3:GetObject"
],
"Resource": "arn:aws:s3:::my-bucket/subfolder/*",
"Condition": {
"StringNotLike": {
"aws:Referer": [
"http://ref.localhost:8000/*",
"http://localhost:8000/*"
]
}
}
}
]
}


By debugging I found out that when the library tries to execute a HEAD request to get the existent file information (which will indicate the need for renaming) the response is a HTTP 403 error. I have tried including the Actions below (from other sources and the documentation) to have a more permissive access but the same problem persists.



"Action": [
"s3:GetObject",
"s3:GetObjectVersion",
"s3:GetObjectAcl",
"s3:PutObject",
"s3:PutObjectAcl",
"s3:DeleteObject",
"s3:DeleteObjectVersion"
]


I have no such problem when adding new files with unique names, only when renaming is necessary.










share|improve this question






















  • Setting "Action": "*" also does not solve the problem. The only way it worked was by removing the policy.
    – ihhcarus
    Nov 19 at 17:38













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I'm using Django with the django-storages library to upload my model's files to S3 and need to add a policy to block direct downloading from the bucket's URLs.



I have achieved that by setting the policy below (check the Referer) but this resulted in a problem when I make use of the library's auto-rename function. My current policy:



{
"Version": "2012-10-17",
"Id": "Policy1542209806458",
"Statement": [
{
"Sid": "Block access globally except by the indicated referers.",
"Effect": "Deny",
"Principal": "*",
"Action": [
"s3:GetObject"
],
"Resource": "arn:aws:s3:::my-bucket/subfolder/*",
"Condition": {
"StringNotLike": {
"aws:Referer": [
"http://ref.localhost:8000/*",
"http://localhost:8000/*"
]
}
}
}
]
}


By debugging I found out that when the library tries to execute a HEAD request to get the existent file information (which will indicate the need for renaming) the response is a HTTP 403 error. I have tried including the Actions below (from other sources and the documentation) to have a more permissive access but the same problem persists.



"Action": [
"s3:GetObject",
"s3:GetObjectVersion",
"s3:GetObjectAcl",
"s3:PutObject",
"s3:PutObjectAcl",
"s3:DeleteObject",
"s3:DeleteObjectVersion"
]


I have no such problem when adding new files with unique names, only when renaming is necessary.










share|improve this question













I'm using Django with the django-storages library to upload my model's files to S3 and need to add a policy to block direct downloading from the bucket's URLs.



I have achieved that by setting the policy below (check the Referer) but this resulted in a problem when I make use of the library's auto-rename function. My current policy:



{
"Version": "2012-10-17",
"Id": "Policy1542209806458",
"Statement": [
{
"Sid": "Block access globally except by the indicated referers.",
"Effect": "Deny",
"Principal": "*",
"Action": [
"s3:GetObject"
],
"Resource": "arn:aws:s3:::my-bucket/subfolder/*",
"Condition": {
"StringNotLike": {
"aws:Referer": [
"http://ref.localhost:8000/*",
"http://localhost:8000/*"
]
}
}
}
]
}


By debugging I found out that when the library tries to execute a HEAD request to get the existent file information (which will indicate the need for renaming) the response is a HTTP 403 error. I have tried including the Actions below (from other sources and the documentation) to have a more permissive access but the same problem persists.



"Action": [
"s3:GetObject",
"s3:GetObjectVersion",
"s3:GetObjectAcl",
"s3:PutObject",
"s3:PutObjectAcl",
"s3:DeleteObject",
"s3:DeleteObjectVersion"
]


I have no such problem when adding new files with unique names, only when renaming is necessary.







amazon-web-services amazon-s3 amazon-policy






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 19 at 17:05









ihhcarus

466619




466619












  • Setting "Action": "*" also does not solve the problem. The only way it worked was by removing the policy.
    – ihhcarus
    Nov 19 at 17:38


















  • Setting "Action": "*" also does not solve the problem. The only way it worked was by removing the policy.
    – ihhcarus
    Nov 19 at 17:38
















Setting "Action": "*" also does not solve the problem. The only way it worked was by removing the policy.
– ihhcarus
Nov 19 at 17:38




Setting "Action": "*" also does not solve the problem. The only way it worked was by removing the policy.
– ihhcarus
Nov 19 at 17:38

















active

oldest

votes











Your Answer






StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});


}
});














 

draft saved


draft discarded


















StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53379507%2fcant-set-s3-policy-for-head-operations-403-forbidden%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown






























active

oldest

votes













active

oldest

votes









active

oldest

votes






active

oldest

votes
















 

draft saved


draft discarded



















































 


draft saved


draft discarded














StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53379507%2fcant-set-s3-policy-for-head-operations-403-forbidden%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown





















































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown

































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown







Popular posts from this blog

404 Error Contact Form 7 ajax form submitting

How to know if a Active Directory user can login interactively

TypeError: fit_transform() missing 1 required positional argument: 'X'