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operation will result in the \", mdx(\"a\", {\n    parentName: \"p\",\n    \"href\": \"https://github.com/evergonlabs/ODC/blob/e712cb66013ac0ecf990a08d86e95fb7819e6afa/contracts/dataobjects/omnichain/OmnichainFungibleTokenDO.sol#L397-L405\"\n  }, mdx(\"inlineCode\", {\n    parentName: \"a\"\n  }, \"OmnichainFungibleTokenDO::_omnichainCallback\")), \" function being invoked which will attempt to decode a \", mdx(\"inlineCode\", {\n    parentName: \"p\"\n  }, \"bool\"), \" from the \", mdx(\"inlineCode\", {\n    parentName: \"p\"\n  }, \"opData\"), \".\"), mdx(\"p\", null, \"As the data supplied is empty rather than \", mdx(\"inlineCode\", {\n    parentName: \"p\"\n  }, \"true\"), \", the decoding operation will fail causing a cross-chain LayerZero transaction that cannot be executed to manifest.\"), mdx(\"h3\", {\n    \"id\": \"impact\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h3\",\n    \"href\": \"#impact\",\n    \"aria-label\": 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\"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h3\",\n    \"href\": \"#example\",\n    \"aria-label\": \"example permalink\",\n    \"className\": \"anchor before\"\n  }, mdx(\"svg\", {\n    parentName: \"a\",\n    \"aria-hidden\": \"true\",\n    \"focusable\": \"false\",\n    \"height\": \"16\",\n    \"version\": \"1.1\",\n    \"viewBox\": \"0 0 16 16\",\n    \"width\": \"16\"\n  }, mdx(\"path\", {\n    parentName: \"svg\",\n    \"fillRule\": \"evenodd\",\n    \"d\": \"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"\n  }))), \"Example:\"), mdx(\"pre\", null, mdx(\"code\", {\n    parentName: \"pre\",\n    \"className\": \"language-sol\",\n    \"metastring\": \"title=contracts/dataobjects/omnichain/OmnichainFungibleTokenDO.sol highlight={5,31} lineNumbers=true lineOffset=448\",\n    \"title\": \"contracts/dataobjects/omnichain/OmnichainFungibleTokenDO.sol\",\n    \"highlight\": \"{5,31}\",\n    \"lineNumbers\": \"true\",\n    \"lineOffset\": \"448\"\n  }, \"function _omnichainIncreaseBalance(DataPoint dp, bytes32 rid, OmnichainAddress from, OmnichainAddress to, uint256 amount) internal returns (bytes memory) {\\n    (, address toAddress) = OmnichainAddresses.decode(to);\\n    if (_successfullOmnichainRequests[rid]) {\\n        // Return data for callback call without any actions\\n        return abi.encode(dp, IOmnichainFungibleTokenOperations.omnichainIncreaseBalanceCallback.selector, \\\"\\\");\\n    }\\n    _successfullOmnichainRequests[rid] = true;\\n\\n    bytes32 diidTarget = _diid(dp, toAddress);\\n    DiidData storage diiddTarget = _diidData(dp, diidTarget);\\n    _increaseBalance(diiddTarget, amount, dp, OTHER_CHAIN_FROM_DIID);\\n    _increaseLocalTotalSupply(dp, amount);\\n\\n    // Notify handlers\\n    // We are making external call within try/catch, it will revert if any of the handlers fail, but we will catch and handle it\\n    bool success;\\n    try this.callIncreaseBalanceHandlersAndRevertOnFail(dp, from, toAddress, amount) {\\n        success = true;\\n    } catch {\\n        // Here we catch all errors, not only IncreaseBalanceCallbackHandlerFailed, because we need to send something back to original chain in any case\\n        success = false;\\n    }\\n\\n    if (!success) {\\n        // Revert increase balance\\n        _decreaseBalance(diiddTarget, amount, dp, diidTarget);\\n        _decreaseLocalTotalSupply(dp, amount);\\n    }\\n\\n    // Return data for Callback call\\n    return abi.encode(dp, IOmnichainFungibleTokenOperations.omnichainIncreaseBalanceCallback.selector, abi.encode(success));\\n}\\n\")), mdx(\"h3\", {\n    \"id\": \"recommendation\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h3\",\n    \"href\": \"#recommendation\",\n    \"aria-label\": \"recommendation permalink\",\n    \"className\": \"anchor before\"\n  }, mdx(\"svg\", {\n    parentName: \"a\",\n    \"aria-hidden\": \"true\",\n    \"focusable\": \"false\",\n    \"height\": \"16\",\n    \"version\": \"1.1\",\n    \"viewBox\": \"0 0 16 16\",\n    \"width\": \"16\"\n  }, mdx(\"path\", {\n    parentName: \"svg\",\n    \"fillRule\": \"evenodd\",\n    \"d\": \"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"\n  }))), \"Recommendation:\"), mdx(\"p\", null, \"We advise the code to properly encode the \", mdx(\"inlineCode\", {\n    parentName: \"p\"\n  }, \"true\"), \" 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1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"\n  }))), \"Alleviation (c6b23c23d8bcd8cce85049ad959cbd711a37126b):\"), mdx(\"p\", null, \"The overall logic around omni-chain request statuses was updated to incorporate a \", mdx(\"inlineCode\", {\n    parentName: \"p\"\n  }, \"CallResult\"), \" value and the callback payload in both referenced statements will ensure that a \", mdx(\"inlineCode\", {\n    parentName: \"p\"\n  }, \"bool\"), \" value is encoded rather than an empty one, addressing this exhibit in full.\"), mdx(ViewDiffButton, {\n    repoUrl: \"https://github.com/evergonlabs/ODC\",\n    mainHash: \"e712cb66013ac0ecf990a08d86e95fb7819e6afa\",\n    fixHash: \"c6b23c23d8bcd8cce85049ad959cbd711a37126b\",\n    gitHubIssue: \"142\",\n    mdxType: \"ViewDiffButton\"\n  }), mdx(\"h2\", {\n    \"id\": \"span-idoft-02moft-02m-improper-refund-addressspan\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h2\",\n    \"href\": \"#span-idoft-02moft-02m-improper-refund-addressspan\",\n    \"aria-label\": \"span idoft 02moft 02m improper refund addressspan permalink\",\n    \"className\": \"anchor before\"\n  }, mdx(\"svg\", {\n    parentName: \"a\",\n    \"aria-hidden\": \"true\",\n    \"focusable\": \"false\",\n    \"height\": \"16\",\n    \"version\": \"1.1\",\n    \"viewBox\": \"0 0 16 16\",\n    \"width\": \"16\"\n  }, mdx(\"path\", {\n    parentName: \"svg\",\n    \"fillRule\": \"evenodd\",\n    \"d\": \"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"\n  }))), mdx(\"span\", {\n    id: \"OFT-02M\"\n  }, \"OFT-02M: Improper Refund Address\")), mdx(\"table\", null, mdx(\"thead\", {\n    parentName: \"table\"\n  }, mdx(\"tr\", {\n    parentName: \"thead\"\n  }, mdx(\"th\", {\n    parentName: \"tr\",\n    \"align\": null\n  }, \"Type\"), mdx(\"th\", {\n    parentName: \"tr\",\n    \"align\": null\n  }, \"Severity\"), mdx(\"th\", {\n    parentName: \"tr\",\n    \"align\": null\n  }, \"Location\"))), mdx(\"tbody\", {\n    parentName: \"table\"\n  }, mdx(\"tr\", {\n    parentName: \"tbody\"\n  }, mdx(\"td\", {\n    parentName: \"tr\",\n    \"align\": null\n  }, mdx(\"a\", {\n    parentName: \"td\",\n    \"href\": \"/reports/evergon-labs-onchain-data-containers-67586dec2e0f7500187d6bc9/appendix/finding-types#logical-fault\"\n  }, \"Logical Fault\")), mdx(\"td\", {\n    parentName: \"tr\",\n    \"align\": null\n  }, mdx(\"img\", {\n    parentName: \"td\",\n    \"className\": \"o-severity o-medium\",\n    \"src\": 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\"aria-hidden\": \"true\",\n    \"focusable\": \"false\",\n    \"height\": \"16\",\n    \"version\": \"1.1\",\n    \"viewBox\": \"0 0 16 16\",\n    \"width\": \"16\"\n  }, mdx(\"path\", {\n    parentName: \"svg\",\n    \"fillRule\": \"evenodd\",\n    \"d\": \"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"\n  }))), \"Impact:\"), mdx(\"p\", null, \"A cross-chain message's surplus or failure may result in unspent native funds being erroneously sent to an incorrect / inaccessible refund recipient, resulting in minor fund loss.\"), mdx(\"h3\", {\n    \"id\": \"example-1\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h3\",\n    \"href\": \"#example-1\",\n    \"aria-label\": \"example 1 permalink\",\n    \"className\": \"anchor before\"\n  }, mdx(\"svg\", {\n    parentName: \"a\",\n    \"aria-hidden\": \"true\",\n    \"focusable\": \"false\",\n    \"height\": \"16\",\n    \"version\": \"1.1\",\n    \"viewBox\": \"0 0 16 16\",\n    \"width\": \"16\"\n  }, mdx(\"path\", {\n    parentName: \"svg\",\n    \"fillRule\": \"evenodd\",\n    \"d\": \"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"\n  }))), \"Example:\"), mdx(\"pre\", null, mdx(\"code\", {\n    parentName: \"pre\",\n    \"className\": \"language-sol\",\n    \"metastring\": \"title=contracts/dataobjects/omnichain/OmnichainFungibleTokenDO.sol highlight={13} lineNumbers=true lineOffset=420\",\n    \"title\": \"contracts/dataobjects/omnichain/OmnichainFungibleTokenDO.sol\",\n    \"highlight\": \"{13}\",\n    \"lineNumbers\": \"true\",\n    \"lineOffset\": \"420\"\n  }, \"function _retryIncreaseOmnichainBalance(bytes32 rid) internal nonReentrant {\\n    PendingOmnichainTransfer memory pot = _pendingOmnichainTransfers[rid];\\n    (uint32 toChainId, ) = OmnichainAddresses.decode(pot.to);\\n    bytes memory data = abi.encode(rid, pot.from, pot.to, pot.amount);\\n    bytes32 retryRid = _proxy.queryDataObjectWrite{value: msg.value}(\\n        toChainId,\\n        address(this), // Address of DO on target chain is same on all chains\\n        pot.dp,\\n        IOmnichainFungibleTokenOperations.omnichainIncreaseBalance.selector,\\n        data,\\n        OMNICHAIN_INCREASE_BALANCE_GAS_LIMIT,\\n        OMNICHAIN_INCREASE_BALANCE_CALLBACK_GAS_LIMIT,\\n        payable(_msgSender())\\n    );\\n    emit OmnichainRetryIncompleteOmnichainIncreaseBalanceSent(rid, retryRid);\\n}\\n\")), mdx(\"h3\", {\n    \"id\": \"recommendation-1\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h3\",\n    \"href\": \"#recommendation-1\",\n    \"aria-label\": \"recommendation 1 permalink\",\n    \"className\": \"anchor before\"\n  }, mdx(\"svg\", {\n    parentName: \"a\",\n    \"aria-hidden\": \"true\",\n    \"focusable\": \"false\",\n    \"height\": \"16\",\n    \"version\": \"1.1\",\n    \"viewBox\": \"0 0 16 16\",\n    \"width\": \"16\"\n  }, mdx(\"path\", {\n    parentName: \"svg\",\n    \"fillRule\": \"evenodd\",\n    \"d\": \"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"\n  }))), \"Recommendation:\"), mdx(\"p\", null, \"We advise the system to permit a different refund address to be specified, ensuring that message refund operations are executed correctly.\"), mdx(\"h3\", {\n    \"id\": \"alleviation-c6b23c23d8bcd8cce85049ad959cbd711a37126b-1\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h3\",\n    \"href\": \"#alleviation-c6b23c23d8bcd8cce85049ad959cbd711a37126b-1\",\n    \"aria-label\": \"alleviation c6b23c23d8bcd8cce85049ad959cbd711a37126b 1 permalink\",\n    \"className\": \"anchor before\"\n  }, mdx(\"svg\", {\n    parentName: \"a\",\n    \"aria-hidden\": \"true\",\n    \"focusable\": \"false\",\n    \"height\": \"16\",\n    \"version\": \"1.1\",\n    \"viewBox\": \"0 0 16 16\",\n    \"width\": \"16\"\n  }, mdx(\"path\", {\n    parentName: \"svg\",\n    \"fillRule\": \"evenodd\",\n    \"d\": \"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"\n  }))), \"Alleviation (c6b23c23d8bcd8cce85049ad959cbd711a37126b):\"), mdx(\"p\", null, \"The refund address was updated to be the result of an input argument, alleviating this exhibit.\"), mdx(ViewDiffButton, {\n    repoUrl: \"https://github.com/evergonlabs/ODC\",\n    mainHash: \"e712cb66013ac0ecf990a08d86e95fb7819e6afa\",\n    fixHash: \"c6b23c23d8bcd8cce85049ad959cbd711a37126b\",\n    gitHubIssue: \"143\",\n    mdxType: \"ViewDiffButton\"\n  }));\n}\n;\nMDXContent.isMDXComponent = true;","headings":[{"depth":2,"value":"<span id=\"OFT-01M\">OFT-01M: Incorrect Encoding of Callback Payload</span>"},{"depth":3,"value":"Description:"},{"depth":3,"value":"Impact:"},{"depth":3,"value":"Example:"},{"depth":3,"value":"Recommendation:"},{"depth":3,"value":"Alleviation (c6b23c23d8bcd8cce85049ad959cbd711a37126b):"},{"depth":2,"value":"<span id=\"OFT-02M\">OFT-02M: Improper Refund Address</span>"},{"depth":3,"value":"Description:"},{"depth":3,"value":"Impact:"},{"depth":3,"value":"Example:"},{"depth":3,"value":"Recommendation:"},{"depth":3,"value":"Alleviation (c6b23c23d8bcd8cce85049ad959cbd711a37126b):"}]}},"pageContext":{"slug":"/manual-review/OmnichainFungibleTokenDO-OFT/","prev":{"label":"OmnichainFungibleFractionsDO.sol (OFF-M)","link":"/manual-review/OmnichainFungibleFractionsDO-OFF"},"next":{"label":"OmnichainIdentifiers.sol (OIS-M)","link":"/manual-review/OmnichainIdentifiers-OIS"}}},"staticQueryHashes":["1954253342","2328931024","2501019404","973074209"]}