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{\n    parentName: \"tr\",\n    \"align\": null\n  }, mdx(\"a\", {\n    parentName: \"td\",\n    \"href\": \"/reports/boson-protocol-version-2.3-64c3b2cf1570d80014096fc3/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-major\",\n    \"src\": \"https://omniscia.io/report-assets/major.png\"\n  })), mdx(\"td\", {\n    parentName: \"tr\",\n    \"align\": null\n  }, mdx(\"a\", {\n    parentName: \"td\",\n    \"href\": \"https://github.com/bosonprotocol/boson-protocol-contracts/blob/02a4d2ff04832a4607674ba37708d4f52cdac4fa/contracts/protocol/facets/SellerHandlerFacet.sol#L277\"\n  }, \"SellerHandlerFacet.sol:L277\"))))), mdx(\"h3\", {\n    \"id\": \"description\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h3\",\n    \"href\": \"#description\",\n    \"aria-label\": \"description 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  }))), \"Description:\"), mdx(\"p\", null, \"The nested \", mdx(\"inlineCode\", {\n    parentName: \"p\"\n  }, \"for\"), \" loop within the \", mdx(\"a\", {\n    parentName: \"p\",\n    \"href\": 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As such, the inner loop can corrupt the outer loop's iteration.\"), mdx(\"h3\", {\n    \"id\": \"impact\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h3\",\n    \"href\": \"#impact\",\n    \"aria-label\": \"impact 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  }))), \"Impact:\"), mdx(\"p\", null, \"If the \", mdx(\"a\", {\n    parentName: \"p\",\n    \"href\": \"https://github.com/bosonprotocol/boson-protocol-contracts/blob/02a4d2ff04832a4607674ba37708d4f52cdac4fa/contracts/protocol/facets/SellerHandlerFacet.sol#L207-L338\"\n  }, mdx(\"inlineCode\", {\n    parentName: \"a\"\n  }, \"SellerHandlerFacet::optInToSellerUpdate\")), \" function is invoked with multiple \", mdx(\"inlineCode\", {\n    parentName: \"p\"\n  }, \"_fieldsToUpdate\"), \", the iterator will potentially skip or repeat fields to update as it will jump from \", mdx(\"inlineCode\", {\n    parentName: \"p\"\n  }, \"i\"), \" to \", mdx(\"inlineCode\", {\n    parentName: \"p\"\n  }, \"collectionCount\"), \", the latter of which can be greater than or lower than the expected value of \", mdx(\"inlineCode\", {\n    parentName: \"p\"\n  }, \"i + 1\"), \".\"), mdx(\"h3\", {\n    \"id\": \"example\",\n    \"style\": {\n      \"position\": \"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/protocol/facets/SellerHandlerFacet.sol highlight={1,45} lineNumbers=true lineOffset=232\",\n    \"title\": \"contracts/protocol/facets/SellerHandlerFacet.sol\",\n    \"highlight\": \"{1,45}\",\n    \"lineNumbers\": \"true\",\n    \"lineOffset\": \"232\"\n  }, \"for (uint256 i = 0; i < _fieldsToUpdate.length; i++) {\\n    SellerUpdateFields role = _fieldsToUpdate[i];\\n\\n    // Approve admin update\\n    if (role == SellerUpdateFields.Admin && sellerPendingUpdate.admin != address(0)) {\\n        require(sellerPendingUpdate.admin == sender, UNAUTHORIZED_CALLER_UPDATE);\\n\\n        preUpdateSellerCheck(_sellerId, sender, lookups);\\n\\n        // Delete old seller id by admin mapping\\n        delete lookups.sellerIdByAdmin[seller.admin];\\n\\n        // Update admin\\n        seller.admin = sender;\\n\\n        // Store new seller id by admin mapping\\n        lookups.sellerIdByAdmin[sender] = _sellerId;\\n\\n        // Delete pending update admin\\n        delete sellerPendingUpdate.admin;\\n\\n        // Delete auth token for seller id if it exists\\n        if (authToken.tokenType != AuthTokenType.None) {\\n            delete lookups.sellerIdByAuthToken[authToken.tokenType][authToken.tokenId];\\n            delete protocolEntities().authTokens[_sellerId];\\n        }\\n\\n        updateApplied = true;\\n    } else if (role == SellerUpdateFields.Assistant && sellerPendingUpdate.assistant != address(0)) {\\n        // Approve assistant update\\n        require(sellerPendingUpdate.assistant == sender, UNAUTHORIZED_CALLER_UPDATE);\\n\\n        preUpdateSellerCheck(_sellerId, sender, lookups);\\n\\n        // Delete old seller id by assistant mapping\\n        delete lookups.sellerIdByAssistant[seller.assistant];\\n\\n        // Update assistant\\n        seller.assistant = sender;\\n\\n        // Transfer ownership of voucher contract to new assistant\\n        IBosonVoucher(lookups.cloneAddress[_sellerId]).transferOwnership(sender); // default voucher contract\\n        Collection[] storage sellersAdditionalCollections = lookups.additionalCollections[_sellerId];\\n        uint256 collectionCount = sellersAdditionalCollections.length;\\n        for (i = 0; i < collectionCount; i++) {\\n            // Additional collections (if they exist)\\n            IBosonVoucher(sellersAdditionalCollections[i].collectionAddress).transferOwnership(sender);\\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 a new iterator to be declared (i.e. \", mdx(\"inlineCode\", {\n    parentName: \"p\"\n  }, \"j\"), \") to ensure that the loops do not affect each other's iterators.\"), mdx(\"h3\", {\n    \"id\": \"alleviation-2b9f60b6c3323fd234b570089ceff924cdb5851c\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h3\",\n    \"href\": \"#alleviation-2b9f60b6c3323fd234b570089ceff924cdb5851c\",\n    \"aria-label\": \"alleviation 2b9f60b6c3323fd234b570089ceff924cdb5851c 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 (2b9f60b6c3323fd234b570089ceff924cdb5851c):\"), mdx(\"p\", null, \"The inner loop iterator has been correctly updated to a new variable labelled \", mdx(\"inlineCode\", {\n    parentName: \"p\"\n  }, \"j\"), \", alleviating this exhibit.\"), mdx(ViewDiffButton, {\n    repoUrl: \"https://github.com/bosonprotocol/boson-protocol-contracts\",\n    mainHash: \"02a4d2ff04832a4607674ba37708d4f52cdac4fa\",\n    fixHash: \"2b9f60b6c3323fd234b570089ceff924cdb5851c\",\n    gitHubIssue: \"730\",\n    mdxType: \"ViewDiffButton\"\n  }));\n}\n;\nMDXContent.isMDXComponent = true;","headings":[{"depth":2,"value":"<span id=\"SHF-01M\">SHF-01M: Incorrect Iterator Usage</span>"},{"depth":3,"value":"Description:"},{"depth":3,"value":"Impact:"},{"depth":3,"value":"Example:"},{"depth":3,"value":"Recommendation:"},{"depth":3,"value":"Alleviation (2b9f60b6c3323fd234b570089ceff924cdb5851c):"}]}},"pageContext":{"slug":"/manual-review/SellerHandlerFacet-SHF/","prev":{"label":"SellerBase.sol (SBE-M)","link":"/manual-review/SellerBase-SBE"},"next":{"label":"BosonVoucher.sol (BVR-C)","link":"/code-style/BosonVoucher-BVR"}}},"staticQueryHashes":["1954253342","2328931024","2501019404","973074209"]}