This commit limits the amount of memory allocated by the
S3 Multi-Object-Delete-API. The server used to allocate as
many bytes as provided by the client using Content-Length.
S3 specifies that the S3 Multi-Object-Delete-API can delete
at most 1000 objects using a single request.
(See: https://docs.aws.amazon.com/AmazonS3/latest/API/multiobjectdeleteapi.html)
Since the maximum S3 object name is limited to 1024 bytes the
XML body sent by the client can only contain up to 1000 * 1024
bytes (excluding XML format overhead).
This commit limits the size of the parsed XML for the S3
Multi-Object-Delete-API to 2 MB. This fixes a DoS
vulnerability since (auth.) clients, MitM-adversaries
(without TLS) and un-auth. users accessing buckets allowing
multi-delete by policy can kill the server.
This behavior is similar to the AWS-S3 implementation.
This PR adds CopyObject support for objects residing in buckets
in different Minio instances (where Minio instances are part of
a federated setup).
Also, added support for multiple Minio domain IPs. This is required
for distributed deployments, where one deployment may have multiple
nodes, each with a different public IP.
Buckets already present on a Minio server before it joins a
bucket federated deployment will now be added to etcd during
startup. In case of a bucket name collision, admin is informed
via Minio server console message.
Added configuration migration for configuration stored in etcd
backend.
Also, environment variables are updated and ListBucket path style
request is no longer forwarded.
Added support for new RPC support using HTTP POST. RPC's
arguments and reply are Gob encoded and sent as HTTP
request/response body.
This patch also removes Go RPC based implementation.
With the implementation of dummy GET ACL handlers,
tools like s3cmd perform few operations which causes
the ACL call to be invoked. Make sure that in our
router configuration GET?acl comes before actual
GET call to facilitate this dummy call.
tests were written in the manner by editing internal
variables of fsObjects to mimic certain behavior from
APIs, but this is racy when an active go-routine is
reading from the same variable.
Make sure to terminate the go-routine if possible for
these tests.
The current problem is that when you invoke
```
mc admin info myminio | head -1
● localhost:9000
```
This output is incorrect as the expected output should be
```
mc admin info myminio | head -1
● 192.168.1.17:9000
```
This commit adds a check to the server's admin-API such that it only
accepts Admin-API requests with authenticated bodies. Further this
commit updates the `madmin` package to always add the
`X-Amz-Content-Sha256` header.
This change improves the Admin-API security since the server does not
accept unauthenticated request bodies anymore.
After this commit `mc` must be updated to the new `madmin` api because
requests over TLS connections will fail.
This commit fixes a DoS vulnerability for certain APIs using
signature V4 by verifying the content-md5 and/or content-sha56 of
the request body in a streaming mode.
The issue was caused by reading the entire body of the request into
memory to verify the content-md5 or content-sha56 checksum if present.
The vulnerability could be exploited by either replaying a V4 request
(in the 15 min time frame) or sending a V4 presigned request with a
large body.
Removed field minio_http_requests_total as it was redundant with
minio_http_requests_duration_seconds_count
Also removed field minio_server_start_time_seconds as it was
redundant with process_start_time_seconds
GetBucketACL call returns empty for all GET in ACL requests,
the primary purpose of this PR is to provide legacy API support
for legacy applications.
Fixes#5706
Better support of HEAD and listing of zero sized objects with trailing
slash (a.k.a empty directory). For that, isLeafDir function is added
to indicate if the specified object is an empty directory or not. Each
backend (xl, fs) has the responsibility to store that information.
Currently, in both of XL & FS, an empty directory is represented by
an empty directory in the backend.
isLeafDir() checks if the given path is an empty directory or not,
since dir listing is costly if the latter contains too many objects,
readDirN() is added in this PR to list only N number of entries.
In isLeadDir(), we will only list one entry to check if a directory
is empty or not.
This commit fixes a DoS vulnerability in the
request authentication. The root cause is an 'unlimited'
read-into-RAM from the request body.
Since this read happens before the request authentication
is verified the vulnerability can be exploit without any
access privileges.
This commit limits the size of the request body to 3 MB.
This is about the same size as AWS. The limit seems to be
between 1.6 and 3.2 MB - depending on the AWS machine which
is handling the request.
This commit ensures that all tickers are stopped using defer ticker.Stop()
style. This will also fix one bug seen when a client starts to listen to
event notifications and that case will result a leak in tickers.
Current healing has an issue when disks are healed
even when they are offline without knowing if disk
is unformatted. This can lead to issues of pre-maturely
removing the disk from the set just because it was
temporarily offline.
There is an increasing number of `mc admin heal` usage
on a cron or regular basis. It is possible that if healing
code saw disk is offline it might prematurely take it down,
this causes availability issues.
Fixes#5826
Previously we used allow bucket policies without
`Version` field to be set to any given value, but
this behavior is inconsistent with AWS S3.
PR #5790 addressed this by making bucket policies
stricter and cleaner, but this causes a breaking
change causing any existing policies perhaps without
`Version` field or the field to be empty to fail upon
server startup.
This PR brings a code to migrate under these scenarios
as a one time operation.
- remove old bucket policy handling
- add new policy handling
- add new policy handling unit tests
This patch brings support to bucket policy to have more control not
limiting to anonymous. Bucket owner controls to allow/deny any rest
API.
For example server side encryption can be controlled by allowing
PUT/GET objects with encryptions including bucket owner.
This change disables the non-constant-time implementations of P-384 and P-521.
As a consequence a client using just these curves cannot connect to the server.
This should be no real issues because (all) clients at least support P-256.
Further this change also rejects ECDSA private keys of P-384 and P-521.
While non-constant-time implementations for the ECDHE exchange don't expose an
obvious vulnerability, using P-384 or P-521 keys for the ECDSA signature may allow
pratical timing attacks.
Fixes#5844
- getBucketLocation
- headBucket
- deleteBucket
Should return 404 or NoSuchBucket even for invalid bucket names, invalid
bucket names are only validated during MakeBucket operation
This is an effort to remove panic from the source.
Add a new call called CriticialIf, that calls LogIf and exits.
Replace panics with one of CriticalIf, FatalIf and a return of error.
Make sure to apply standard headers such as Content-Type,
Content-Disposition and Content-Language to the correct
GCS object attributes during object upload and copy operations.
Fixes: #5800
As we move to multiple config backends like local disk and etcd,
config file should not be read from the disk, instead the quick
package should load and verify for duplicate entries.
This change adds some security headers like Content-Security-Policy.
It does not set the HSTS header because Content-Security-Policy prevents
mixed HTTP and HTTPS content and the server does not use cookies.
However it is a header which could be added later on.
It also moves some header added by #5805 from a vendored file
to a generic handler.
Fixes ##5813
Also make sure to not modify the underlying errors from
layers, we should return the error as is and one object
layer should translate the errors.
Fixes#5797
This PR introduces ReloadFormat API call at objectlayer
to facilitate this. Previously we repurposed HealFormat
but we never ended up updating our reference format on
peers.
Fixes#5700
This change let the server return the S3 error for a key rotation
if the source key is not valid but equal to the destination key.
This change also fixes the SSE-C error messages since AWS returns error messages
ending with a '.'.
Fixes#5625
This change sets the storage class of the object-info if a storage
class was specified during PUT. The server now replies with the
storage class which was set during uploading the object in FS mode.
Fixes#5777
Harshavardhana
Andreas Auernhammer
Nitish Tiwari
Praveen raj Mani
Bala FA
Krishna Srinivas
Arjun Mishra
Yaroslav Skopets
kannappanr
Anis Elleuch
Ashish Kumar Sinha
wd256
cbenien
Krishna Srinivas
poornas
ebozduman