Need Error Handling for SendCoinsFromAccountToModule Function

[slendermaan]

Credit to : HelloBloc

@liangping

Description

In the following code content, the error handling of x.bankKeeper.SendCoins is missing, which will result in a malicious user being able to set the status without cost.

	//lock swap-in token to the swap module
	escrowAddr := types.GetEscrowAddress(pool.EncounterPartyPort, pool.EncounterPartyChannel)
	k.bankKeeper.SendCoinsFromAccountToModule(ctx, sdk.MustAccAddressFromBech32(msg.Sender), escrowAddr.String(), sdk.NewCoins(*msg.TokenIn))

	//constructs the IBC data packet
	rawMsgData, err := json.Marshal(msg)
	if err != nil {
		return nil, err
	}

Impact

This results in users being able to successfully swap without having a sufficient balance.

Likelihood

This attack can be done by any user who does not have sufficient balance.

Related links

Related-Code

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Ethics

Sorry for using github to report this vul, as I didn't find your security channle and all the effective ways to report it at that time. However, I have observed that your main-net was not online at that time, so reported the issue via github. Hope you don't mind.

[slendermaan]

You can use this to check your own code for this series of problems

[liangping]

Yeah. Exactly.

---Original--- From: @.> Date: Mon, Mar 6, 2023 22:51 PM To: @.>; Cc: @.@.>; Subject: [ibcswap/ibcswap] Need Error Handling forSendCoinsFromAccountToModule Function (Issue #8)

From : @.***

@liangping

Description

In the following code content, the error handling of x.bankKeeper.SendCoins is missing, which will result in a malicious user being able to set the status without cost. //lock swap-in token to the swap module escrowAddr := types.GetEscrowAddress(pool.EncounterPartyPort, pool.EncounterPartyChannel) k.bankKeeper.SendCoinsFromAccountToModule(ctx, sdk.MustAccAddressFromBech32(msg.Sender), escrowAddr.String(), sdk.NewCoins(*msg.TokenIn)) //constructs the IBC data packet rawMsgData, err := json.Marshal(msg) if err != nil { return nil, err }

Related-Code

REF

REF

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