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support passing signatureAge conditional (#18529)

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this PR allows following policy

```
{
   "Version": "2012-10-17",
   "Statement": [
      {
         "Sid": "Deny a presigned URL request if the signature is more than 10 min old",
         "Effect": "Deny",
         "Action": "s3:*",
         "Resource": "arn:aws:s3:::DOC-EXAMPLE-BUCKET1/*",
         "Condition": {
            "NumericGreaterThan": {
               "s3:signatureAge": 600000
            }
         }
      }
   ]
}
```

This is to basically disable all pre-signed URLs that are older than 10 minutes.
This commit is contained in:
Harshavardhana 2023-11-27 11:30:19 -08:00 committed by GitHub
parent be02333529
commit 8d9e83fd99
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 14 additions and 3 deletions
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4
cmd/bucket-policy.go
View File

@ -137,6 +137,10 @@ func getConditionValues(r *http.Request, lc string, cred auth.Credentials) map[s
}
cloneHeader := r.Header.Clone()
if v := cloneHeader.Get("x-amz-signature-age"); v != "" {
args["signatureAge"] = []string{v}
cloneHeader.Del("x-amz-signature-age")
}
if userTags := cloneHeader.Get(xhttp.AmzObjectTagging); userTags != "" {
tag, _ := tags.ParseObjectTags(userTags)

4
cmd/signature-v4-parser.go
View File

@ -232,6 +232,10 @@ func parsePreSignV4(query url.Values, region string, stype serviceType) (psv pre
return psv, ErrMaximumExpires
}
if preSignV4Values.Date.IsZero() || preSignV4Values.Date.Equal(timeSentinel) {
return psv, ErrMalformedPresignedDate
}
// Save signed headers.
preSignV4Values.SignedHeaders, aec = parseSignedHeader("SignedHeaders=" + query.Get(xhttp.AmzSignedHeaders))
if aec != ErrNone {

3
cmd/signature-v4.go
View File

@ -334,6 +334,9 @@ func doesPresignedSignatureMatch(hashedPayload string, r *http.Request, region s
if !compareSignatureV4(req.Form.Get(xhttp.AmzSignature), newSignature) {
return ErrSignatureDoesNotMatch
}
r.Header.Set("x-amz-signature-age", strconv.FormatInt(UTCNow().Sub(pSignValues.Date).Milliseconds(), 10))
return ErrNone
}

2
go.mod
View File

@ -52,7 +52,7 @@ require (
github.com/minio/madmin-go/v3 v3.0.33
github.com/minio/minio-go/v7 v7.0.64
github.com/minio/mux v1.9.0
github.com/minio/pkg/v2 v2.0.3-0.20231107172951-8a60b89ec9b4
github.com/minio/pkg/v2 v2.0.4
github.com/minio/selfupdate v0.6.0
github.com/minio/sha256-simd v1.0.1
github.com/minio/simdjson-go v0.4.5

4
go.sum
View File

@ -497,8 +497,8 @@ github.com/minio/mux v1.9.0 h1:dWafQFyEfGhJvK6AwLOt83bIG5bxKxKJnKMCi0XAaoA=
github.com/minio/mux v1.9.0/go.mod h1:1pAare17ZRL5GpmNL+9YmqHoWnLmMZF9C/ioUCfy0BQ=
github.com/minio/pkg v1.7.5 h1:UOUJjewE5zoaDPlCMJtNx/swc1jT1ZR+IajT7hrLd44=
github.com/minio/pkg v1.7.5/go.mod h1:mEfGMTm5Z0b5EGxKNuPwyb5A2d+CC/VlUyRj6RJtIwo=
github.com/minio/pkg/v2 v2.0.3-0.20231107172951-8a60b89ec9b4 h1:5eHjHtFZrrCQ3eO0sesXomdAUTtcGh0Fpp7Qa6dtjrY=
github.com/minio/pkg/v2 v2.0.3-0.20231107172951-8a60b89ec9b4/go.mod h1:6xTAr5M9yobpUroXAAaTrGJ9fhOZIqKYOT0I87u2yZ4=
github.com/minio/pkg/v2 v2.0.4 h1:vHQOqxD7AdsJq3X9GylO0PO6WCpcK7aePsVfk0oRYh0=
github.com/minio/pkg/v2 v2.0.4/go.mod h1:ya1jPY/rtVp3HarxwDQJkclR8Rd2QxwxA9kwS436ovs=
github.com/minio/selfupdate v0.6.0 h1:i76PgT0K5xO9+hjzKcacQtO7+MjJ4JKA8Ak8XQ9DDwU=
github.com/minio/selfupdate v0.6.0/go.mod h1:bO02GTIPCMQFTEvE5h4DjYB58bCoZ35XLeBf0buTDdM=
github.com/minio/sha256-simd v0.1.1/go.mod h1:B5e1o+1/KgNmWrSQK08Y6Z1Vb5pwIktudl0J58iy0KM=