Merge pull request from GHSA-f92v-grc2-w2fg

* remove delete code in DeleteAccount

* update unit test

* refactor test

Co-authored-by: Federico Kunze Küllmer <[email protected]>

Author: facs95

x/evm/keeper/statedb.go

@@ -1,7 +1,6 @@
 package keeper
 
 import (
-	"bytes"
 	"fmt"
 	"math/big"
 
@@ -186,7 +185,7 @@ func (k *Keeper) DeleteAccount(ctx sdk.Context, addr common.Address) error {
 	}
 
 	// NOTE: only Ethereum accounts (contracts) can be selfdestructed
-	ethAcct, ok := acct.(ethermint.EthAccountI)
+	_, ok := acct.(ethermint.EthAccountI)
 	if !ok {
 		return sdkerrors.Wrapf(types.ErrInvalidAccount, "type %T, address %s", acct, addr)
 	}
@@ -196,12 +195,6 @@ func (k *Keeper) DeleteAccount(ctx sdk.Context, addr common.Address) error {
 		return err
 	}
 
-	// remove code
-	codeHashBz := ethAcct.GetCodeHash().Bytes()
-	if !bytes.Equal(codeHashBz, types.EmptyCodeHash) {
-		k.SetCode(ctx, codeHashBz, nil)
-	}
-
 	// clear storage
 	k.ForEachStorage(ctx, addr, func(key, _ common.Hash) bool {
 		k.SetState(ctx, addr, key, nil)

x/evm/keeper/statedb_test.go

@@ -15,6 +15,7 @@ import (
 	ethtypes "github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/core/vm"
 	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/evmos/ethermint/crypto/ethsecp256k1"
 	"github.com/evmos/ethermint/tests"
 	"github.com/evmos/ethermint/x/evm/statedb"
 	"github.com/evmos/ethermint/x/evm/types"
@@ -420,12 +421,26 @@ func (suite *KeeperTestSuite) TestSuicide() {
 	suite.Require().NoError(db.Commit())
 	db = suite.StateDB()
 
+	// Generate 2nd address
+	privkey, _ := ethsecp256k1.GenerateKey()
+	key, err := privkey.ToECDSA()
+	suite.Require().NoError(err)
+	addr2 := crypto.PubkeyToAddress(key.PublicKey)
+
+	// Add code and state to account 2
+	db.SetCode(addr2, code)
+	suite.Require().Equal(code, db.GetCode(addr2))
+	for i := 0; i < 5; i++ {
+		db.SetState(addr2, common.BytesToHash([]byte(fmt.Sprintf("key%d", i))), common.BytesToHash([]byte(fmt.Sprintf("value%d", i))))
+	}
+
 	// Call Suicide
 	suite.Require().Equal(true, db.Suicide(suite.address))
 
 	// Check suicided is marked
 	suite.Require().Equal(true, db.HasSuicided(suite.address))
 
+	// Commit state
 	suite.Require().NoError(db.Commit())
 	db = suite.StateDB()
 
@@ -441,6 +456,10 @@ func (suite *KeeperTestSuite) TestSuicide() {
 
 	// Check account is deleted
 	suite.Require().Equal(common.Hash{}, db.GetCodeHash(suite.address))
+
+	// Check code is still present in addr2 and suicided is false
+	suite.Require().NotNil(db.GetCode(addr2))
+	suite.Require().Equal(false, db.HasSuicided(addr2))
 }
 
 func (suite *KeeperTestSuite) TestExist() {