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fix: (C4 #13) use bitwise OR / | to avoid combining two permissions twice #660

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CJ42
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@CJ42 CJ42 commented Aug 8, 2023

What does this PR introduce?

🐛 Bug Fix

The function combinePermissions adds permission together into a final combined value.
If the same permission is added twice, then this will result in a new and different permission.
For example adding _PERMISSION_STATICCALL twice results in _PERMISSION_SUPER_DELEGATECALL.

  • Fix the bug by using bitwise OR / | inside the function.
  • Add a set of Foundry tests to test the function combinePermissions + re-use the Foundry test used as a PoC in the issue sligthly modified to test for revert.

PR Checklist

  • Wrote Tests
  • Wrote & Generated Documentation (readme/natspec/dodoc)
  • Ran npm run lint && npm run lint:solidity (solhint)
  • Ran npm run format (prettier)
  • Ran npm run build
  • Ran npm run test

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Hugoo commented Aug 8, 2023

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github-actions bot commented Aug 8, 2023

👋 Hello
⛽ I am the Gas Bot Reporter. I keep track of the gas costs of common interactions using Universal Profiles 🆙 !
📊 Here is a summary of the gas cost with the code introduced by this PR.

⛽📊 See Gas Benchmark report of Using UniversalProfile owned by an EOA

🔀 execute scenarios

execute scenarios - 👑 UP Owner ⛽ Gas Usage
Transfer 1 LYX to an EOA without data 37537
Transfer 1 LYX to a UP without data 36639
Transfer 1 LYX to an EOA with 256 bytes of data 42198
Transfer 1 LYX to a UP with 256 bytes of data 44750
Transfer 0.1 LYX to 3x EOA without data 70862
Transfer 0.1 LYX to 3x UP without data 75680
Transfer 0.1 LYX to 3x EOA with 256 bytes of data 84838
Transfer 0.1 LYX to 3x EOA with 256 bytes of data 100042

🗄️ setData scenarios

setData scenarios - 👑 UP Owner ⛽ Gas Usage
Set a 20 bytes long value 49971
Set a 60 bytes long value 95293
Set a 160 bytes long value 164465
Set a 300 bytes long value 279688
Set a 600 bytes long value 484148
Change the value of a data key already set 32859
Remove the value of a data key already set 27333
Set 2 data keys of 20 bytes long value 78428
Set 2 data keys of 100 bytes long value 260580
Set 3 data keys of 20 bytes long value 105145
Change the value of three data keys already set of 20 bytes long value 45445
Remove the value of three data keys already set 41339

🗄️ Tokens scenarios

Tokens scenarios - 👑 UP Owner ⛽ Gas Usage
Minting a LSP7Token to a UP (No Delegate) from an EOA 91241
Minting a LSP7Token to an EOA from an EOA 59206
Transferring an LSP7Token from a UP to another UP (No Delegate) 98689
Minting a LSP8Token to a UP (No Delegate) from an EOA 158192
Minting a LSP8Token to an EOA from an EOA 126157
Transferring an LSP8Token from a UP to another UP (No Delegate) 147236

📝 Notes

  • The execute and setData scenarios are executed on a fresh UniversalProfile smart contract, deployed as standard contracts (not as proxy behind a base contract implementation).
⛽📊 See Gas Benchmark report of Using UniversalProfile owned by an LSP6KeyManager

This document contains the gas usage for common interactions and scenarios when using UniversalProfile smart contracts.

🔀 execute scenarios

👑 unrestricted controller

execute scenarios - 👑 main controller ⛽ Gas Usage
transfer LYX to an EOA 60439
transfer LYX to a UP 62041
transfer tokens (LSP7) to an EOA (no data) 107162
transfer tokens (LSP7) to a UP (no data) 242734
transfer a NFT (LSP8) to a EOA (no data) 171009
transfer a NFT (LSP8) to a UP (no data) 289909

🛃 restricted controller

execute scenarios - 🛃 restricted controller ⛽ Gas Usage
transfer some LYXes to an EOA - restricted to 1 x allowed address only (TRANSFERVALUE + 1x AllowedCalls) 72648
transfers some tokens (LSP7) to an EOA - restricted to LSP7 + 2x allowed contracts only (CALL + 2x AllowedCalls) (no data) 122941
transfers some tokens (LSP7) to an other UP - restricted to LSP7 + 2x allowed contracts only (CALL + 2x AllowedCalls) (no data) 258513
transfers a NFT (LSP8) to an EOA - restricted to LSP8 + 2x allowed contracts only (CALL + 2x AllowedCalls) (no data) 186776
transfers a NFT (LSP8) to an other UP - restricted to LSP8 + 2x allowed contracts only (CALL + 2x AllowedCalls) (no data) 305676

🗄️ setData scenarios

👑 unrestricted controller

setData scenarios - 👑 main controller ⛽ Gas Usage
updates profile details (LSP3Profile metadata) 136875
give permissions to a controller (AddressPermissions[] + AddressPermissions[index] + AddressPermissions:Permissions:) 132906
restrict a controller to some specific ERC725Y Data Keys 139282
restrict a controller to interact only with 3x specific addresses 161986
remove a controller (its permissions + its address from the AddressPermissions[] array) 67871
write 5x LSP12 Issued Assets 233253

🛃 restricted controller

setData scenarios - 🛃 restricted controller ⛽ Gas Usage
setData(bytes32,bytes) -> updates 1x data key 102626
setData(bytes32[],bytes[]) -> updates 3x data keys (first x3) 161440
setData(bytes32[],bytes[]) -> updates 3x data keys (middle x3) 145519
setData(bytes32[],bytes[]) -> updates 3x data keys (last x3) 170752
setData(bytes32[],bytes[]) -> updates 2x data keys + add 3x new controllers (including setting the array length + indexes under AddressPermissions[index]) 249872

📝 Notes

  • The execute and setData scenarios are executed on a fresh UniversalProfile and LSP6KeyManager smart contracts, deployed as standard contracts (not as proxy behind a base contract implementation).

@CJ42 CJ42 changed the title fix: use bitwise OR / | to avoid combining two permissions twice fix: (C4 #13) use bitwise OR / | to avoid combining two permissions twice Aug 9, 2023
@CJ42 CJ42 marked this pull request as ready for review August 9, 2023 07:35
@CJ42 CJ42 force-pushed the DEV-7698_C4-13---Permission-escalation-by-adding-the-same-permission-twice_Jean branch 2 times, most recently from 5770f4c to 6dd0057 Compare August 9, 2023 07:52
@CJ42 CJ42 force-pushed the DEV-7698_C4-13---Permission-escalation-by-adding-the-same-permission-twice_Jean branch from 6dd0057 to 3547872 Compare August 9, 2023 09:00
@CJ42 CJ42 force-pushed the DEV-7698_C4-13---Permission-escalation-by-adding-the-same-permission-twice_Jean branch from 3547872 to d16dae6 Compare August 11, 2023 13:34
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Changes to gas cost

Generated at commit: d949f3277e83eaf5badf53d7e64984e5fab4bac3, compared to commit: 9db488aad9065f88cfc3c5f43f47b1fab35fc5f0

🧾 Summary (10% most significant diffs)

Contract Method Avg (+/-) %

Full diff report 👇
Contract Deployment Cost (+/-) Method Min (+/-) % Avg (+/-) % Median (+/-) % Max (+/-) % # Calls (+/-)
LSP6ExecuteRestrictedController 2,888,707 (+34,647)
LSP6ExecuteUnrestrictedController 2,888,707 (+34,647)
LSP6SetDataRestrictedController 2,873,483 (+34,638)
LSP6SetDataUnrestrictedController 2,873,483 (+34,638)

@CJ42 CJ42 merged commit 7653cd0 into develop Aug 11, 2023
25 checks passed
@CJ42 CJ42 deleted the DEV-7698_C4-13---Permission-escalation-by-adding-the-same-permission-twice_Jean branch August 11, 2023 13:56
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5 participants