ALTR

In the contract `AltrAllowList` the role `LIST_MANAGER_ROLE` has authority over the functions shown in the diagram below. Any compromise to the `LIST_MANAGER_ROLE` account may allow the hacker to take advantage of this authority.  In the contract `AltrFeeManager` the role `DEFAULT_ADMIN_ROLE` has authority over the functions shown in the diagram below. Any compromise to the `DEFAULT_ADMIN_ROLE` account may allow the hacker to take advantage of this authority.  In the contract `AltrFeeManager` the role `TRADE_CHECKER_ROLE` has authority over the functions shown in the diagram below. Any compromise to the `TRADE_CHECKER_ROLE` account may allow the hacker to take advantage of this authority.  In the contract `AltrFractions` the role `BURN_MANAGER_ROLE` has authority over the functions shown in the diagram below. Any compromise to the `BURN_MANAGER_ROLE` account may allow the hacker to take advantage of this authority.  In the contract `AltrFractions` the role `DEFAULT_ADMIN_ROLE` has authority over the functions shown in the diagram below. Any compromise to the `DEFAULT_ADMIN_ROLE` account may allow the hacker to take advantage of this authority.  In the contract `AltrFractionsBuyout` the role `DEFAULT_ADMIN_ROLE` has authority over the functions shown in the diagram below. Any compromise to the `DEFAULT_ADMIN_ROLE` account may allow the hacker to take advantage of this authority.  In the contract `AltrFractionsSale` the role `DEFAULT_ADMIN_ROLE` has authority over the functions shown in the diagram below. Any compromise to the `DEFAULT_ADMIN_ROLE` account may allow the hacker to take advantage of this authority.  In the contract `AltrFractionsSale` the role `SALE_ISSUER_ROLE` has authority over the functions shown in the diagram below. Any compromise to the `SALE_ISSUER_ROLE` account may allow the hacker to take advantage of this authority.  Also, since the `setupSale()` function can only be called by `SALE_ISSUER_ROLE`, and the `fractionsSale.initiator` is set to `msg.sender` in `setupSale()`, functions `withdrawFractionsKept()` and `withdrawFailedSaleNft()` are another two functions that `SALE_ISSUER_ROLE` has authority over. In the contract `AltrFractionsSale` the role `allowList.isAddressAllowed` has authority over the functions shown in the list below. Any compromise to the `allowList.isAddressAllowed` account may allow the hacker to take advantage of this authority. * `buyFractions()` In the contract `AltrLicenseManager` the role `_owner` has authority over the functions shown in the diagram below. Any compromise to the `_owner` account may allow the hacker to take advantage of this authority.  In the contract `AltrNftCollateralRetriever` the role `_owner` has authority over the functions shown in the diagram below. Any compromise to the `_owner` account may allow the hacker to take advantage of this authority.  In the contract `AltrNftCollateralRetriever` the role *`MINTER_ROLE` of the input `nftContract`* has authority over the functions shown in the list below. Any compromise to the *`MINTER_ROLE` of the input `nftContract`* account may allow the hacker to take advantage of this authority. * `burnNft()` In the contract `AltrNftCollection` the role `DEFAULT_ADMIN_ROLE` has authority over the functions shown in the diagram below. A

`AltrFeeManager`, `AltrNftCollateralRetriever` and `AltrNftCollectionFactory` are upgradeable contracts, the owner can upgrade the contract without the community's commitment. If an attacker compromises the account, he can change the implementation of the contract and drain tokens from the contract.

When creating a new instance of a contract from upgradeable contract’s code, these creations are handled directly by Solidity and not by OpenZeppelin Upgrades, which means that these contracts will not be upgradeable.

When transferring deflationary ERC20 tokens, the input amount may not be equal to the received amount due to the charged transaction fee. For example, if a user sends 100 deflationary tokens (with a 10% transaction fee), only 90 tokens actually arrived to the contract. However, a failure to discount such fees may allow the same user to withdraw 100 tokens from the contract, which causes the contract to lose 10 tokens in such a transaction. Reference: https://thoreum-finance.medium.com/what-exploit-happened-today-for-gocerberus-and-garuda-also-for-lokum-ybear-piggy-caramelswap-3943ee23a39f

The contract is serving as the underlying entity to interact with one or more third party protocols. The scope of the audit treats third party entities as black boxes and assume their functional correctness. However, in the real world, third parties can be compromised and this may lead to lost or stolen assets. In addition, upgrades of third parties can possibly create severe impacts, such as increasing fees of third parties, migrating to new LP pools, etc.

Code documentation can be improved by providing unit tests for the workflows. Unit tests could be used to cover and precisely test the program in its development evolution, to assert properties being held when code evolves. Documenting with unit tests allows precise expression of the expectations about the program. Examples may include expected cases, edge cases and ensure rejections of invalid data.