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Address a data race issue within identity_store_util::processLocalAli…
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…as (#13093)

- When loading an existing alias within processLocalAlias we aren't
   cloning the object from the memory store. There seems to be a data
   race within the function when calling entity.UpsertAlias and
   a concurrent invalidation routine.

 ==================
WARNING: DATA RACE
Read at 0x00c00bd03d08 by goroutine 94:
  google.golang.org/protobuf/internal/impl.pointer.Elem()
      /go/pkg/mod/google.golang.org/protobuf@v1.27.1/internal/impl/pointer_unsafe.go:118 +0x2b3
  google.golang.org/protobuf/internal/impl.(*MessageInfo).sizePointerSlow()
      /go/pkg/mod/google.golang.org/protobuf@v1.27.1/internal/impl/encode.go:76 +0x265
  google.golang.org/protobuf/internal/impl.(*MessageInfo).sizePointer()
      /go/pkg/mod/google.golang.org/protobuf@v1.27.1/internal/impl/encode.go:56 +0x12a
  google.golang.org/protobuf/internal/impl.(*MessageInfo).size()
      /go/pkg/mod/google.golang.org/protobuf@v1.27.1/internal/impl/encode.go:40 +0x95
  google.golang.org/protobuf/internal/impl.(*MessageInfo).size-fm()
      /go/pkg/mod/google.golang.org/protobuf@v1.27.1/internal/impl/encode.go:33 +0x6c
  google.golang.org/protobuf/proto.MarshalOptions.marshal()
      /go/pkg/mod/google.golang.org/protobuf@v1.27.1/proto/encode.go:153 +0x1f3
  google.golang.org/protobuf/proto.MarshalOptions.MarshalAppend()
      /go/pkg/mod/google.golang.org/protobuf@v1.27.1/proto/encode.go:122 +0xa5
  github.com/golang/protobuf/proto.marshalAppend()
      /go/pkg/mod/github.com/golang/protobuf@v1.5.2/proto/wire.go:40 +0xe4
  github.com/golang/protobuf/proto.Marshal()
      /go/pkg/mod/github.com/golang/protobuf@v1.5.2/proto/wire.go:23 +0x64
  github.com/hashicorp/vault/helper/identity.(*Entity).Clone()
      /go/src/github.com/hashicorp/vault/helper/identity/identity.go:34 +0x150
  github.com/hashicorp/vault/vault.(*IdentityStore).MemDBEntitiesByBucketKeyInTxn()
      /go/src/github.com/hashicorp/vault/vault/identity_store_util.go:1214 +0x306
  github.com/hashicorp/vault/vault.(*IdentityStore).Invalidate()
      /go/src/github.com/hashicorp/vault/vault/identity_store.go:216 +0xd6c
  github.com/hashicorp/vault/vault.(*IdentityStore).Invalidate-fm()
      /go/src/github.com/hashicorp/vault/vault/identity_store.go:160 +0x6d
  github.com/hashicorp/vault/sdk/framework.(*Backend).InvalidateKey()
      /go/src/github.com/hashicorp/vault/sdk/framework/backend.go:347 +0x8a
  github.com/hashicorp/vault/vault.(*IdentityStore).InvalidateKey()
      <autogenerated>:1 +0x7d
  github.com/hashicorp/vault/vault.(*Core).asyncInvalidateKey()
      /go/src/github.com/hashicorp/vault/vault/replication_invalidation_ent.go:58 +0x390
  github.com/hashicorp/vault/vault.(*Core).asyncInvalidateHandler()
      /go/src/github.com/hashicorp/vault/vault/replication_invalidation_ent.go:71 +0x9b
  github.com/hashicorp/vault/vault.startReplicationEnt·dwrap·453()
      /go/src/github.com/hashicorp/vault/vault/replication_util_ent.go:331 +0x71

Previous write at 0x00c00bd03d08 by goroutine 52:
  github.com/hashicorp/vault/helper/identity.(*Entity).UpsertAlias()
      /go/src/github.com/hashicorp/vault/helper/identity/identity.go:55 +0x271
  github.com/hashicorp/vault/vault.(*IdentityStore).processLocalAlias()
      /go/src/github.com/hashicorp/vault/vault/identity_store_util.go:720 +0x672
  github.com/hashicorp/vault/vault.possiblyForwardEntityCreation()
      /go/src/github.com/hashicorp/vault/vault/request_handling_util_ent.go:230 +0x286
  github.com/hashicorp/vault/vault.(*Core).handleLoginRequest()
      /go/src/github.com/hashicorp/vault/vault/request_handling.go:1345 +0x234a
  github.com/hashicorp/vault/vault.(*Core).handleCancelableRequest()
      /go/src/github.com/hashicorp/vault/vault/request_handling.go:607 +0x1a11
  github.com/hashicorp/vault/vault.(*Core).switchedLockHandleRequest()
      /go/src/github.com/hashicorp/vault/vault/request_handling.go:442 +0x5b5
  github.com/hashicorp/vault/vault.(*Core).HandleRequest()
      /go/src/github.com/hashicorp/vault/vault/request_handling.go:408 +0xf2
  github.com/hashicorp/vault/http.request()
      /go/src/github.com/hashicorp/vault/http/handler.go:953 +0xb1
  github.com/hashicorp/vault/http.handleLogicalInternal.func1()
      /go/src/github.com/hashicorp/vault/http/logical.go:341 +0xca
  net/http.HandlerFunc.ServeHTTP()
      /usr/local/go/src/net/http/server.go:2046 +0x4d
  github.com/hashicorp/vault/http.handleRequestForwarding.func1()
      /go/src/github.com/hashicorp/vault/http/handler.go:887 +0x4eb
  net/http.HandlerFunc.ServeHTTP()
      /usr/local/go/src/net/http/server.go:2046 +0x4d
  net/http.(*ServeMux).ServeHTTP()
      /usr/local/go/src/net/http/server.go:2424 +0xc5
  github.com/hashicorp/vault/http.wrapHelpHandler.func1()
      /go/src/github.com/hashicorp/vault/http/help.go:23 +0x281
  net/http.HandlerFunc.ServeHTTP()
      /usr/local/go/src/net/http/server.go:2046 +0x4d
  github.com/hashicorp/vault/http.wrapCORSHandler.func1()
      /go/src/github.com/hashicorp/vault/http/cors.go:29 +0xb0e
  net/http.HandlerFunc.ServeHTTP()
      /usr/local/go/src/net/http/server.go:2046 +0x4d
  github.com/hashicorp/vault/http.rateLimitQuotaWrapping.func1()
      /go/src/github.com/hashicorp/vault/http/util.go:97 +0xf28
  net/http.HandlerFunc.ServeHTTP()
      /usr/local/go/src/net/http/server.go:2046 +0x4d
  github.com/hashicorp/vault/http.wrapDRSecondaryHandler.func1()
      /go/src/github.com/hashicorp/vault/http/util_ent.go:81 +0x7e3
  net/http.HandlerFunc.ServeHTTP()
      /usr/local/go/src/net/http/server.go:2046 +0x4d
  github.com/hashicorp/vault/http.wrapGenericHandler.func1()
      /go/src/github.com/hashicorp/vault/http/handler.go:465 +0x1843
  net/http.HandlerFunc.ServeHTTP()
      /usr/local/go/src/net/http/server.go:2046 +0x4d
  github.com/hashicorp/go-cleanhttp.PrintablePathCheckHandler.func1()
      /go/pkg/mod/github.com/hashicorp/go-cleanhttp@v0.5.2/handlers.go:42 +0xc1
  net/http.HandlerFunc.ServeHTTP()
      /usr/local/go/src/net/http/server.go:2046 +0x4d
  net/http.serverHandler.ServeHTTP()
      /usr/local/go/src/net/http/server.go:2878 +0x89a
  net/http.initALPNRequest.ServeHTTP()
      /usr/local/go/src/net/http/server.go:3479 +0x34d
  net/http.(*initALPNRequest).ServeHTTP()
      <autogenerated>:1 +0x8f
  net/http.Handler.ServeHTTP-fm()
      /usr/local/go/src/net/http/server.go:87 +0x75
  net/http.(*http2serverConn).runHandler()
      /usr/local/go/src/net/http/h2_bundle.go:5832 +0xdd
  net/http.(*http2serverConn).processHeaders·dwrap·31()
      /usr/local/go/src/net/http/h2_bundle.go:5562 +0x64
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@stevendpclark
stevendpclark committed Nov 9, 2021
1 parent a0830b1 commit 4a410ca
Showing 1 changed file with 1 addition and 1 deletion.
2 changes: 1 addition & 1 deletion vault/identity_store_util.go
View file
Expand Up @@ -695,7 +695,7 @@ func (i *IdentityStore) processLocalAlias(ctx context.Context, lAlias *logical.A
return nil, fmt.Errorf("mount accessor %q is not local", lAlias.MountAccessor)
}

alias, err := i.MemDBAliasByFactors(lAlias.MountAccessor, lAlias.Name, false, false)
alias, err := i.MemDBAliasByFactors(lAlias.MountAccessor, lAlias.Name, true, false)
if err != nil {
return nil, err
}
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