{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2024-32481",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2024-04-12T19:41:51.168Z",
        "datePublished": "2024-04-25T17:00:54.082Z",
        "dateUpdated": "2024-08-02T02:13:39.300Z"
    },
    "containers": {
        "cna": {
            "title": "vyper's range(start, start + N) reverts for negative numbers",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-681",
                            "lang": "en",
                            "description": "CWE-681: Incorrect Conversion between Numeric Types",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 5.3,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/vyperlang/vyper/security/advisories/GHSA-ppx5-q359-pvwj",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/vyperlang/vyper/security/advisories/GHSA-ppx5-q359-pvwj"
                },
                {
                    "name": "https://github.com/vyperlang/vyper/commit/3de1415ee77a9244eb04bdb695e249d3ec9ed868",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/vyperlang/vyper/commit/3de1415ee77a9244eb04bdb695e249d3ec9ed868"
                },
                {
                    "name": "https://github.com/vyperlang/vyper/commit/5319cfbe14951e007ccdb323257e5ada869b35d5",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/vyperlang/vyper/commit/5319cfbe14951e007ccdb323257e5ada869b35d5"
                },
                {
                    "name": "https://github.com/vyperlang/vyper/blob/9136169468f317a53b4e7448389aa315f90b95ba/vyper/codegen/stmt.py#L286-L287",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/vyperlang/vyper/blob/9136169468f317a53b4e7448389aa315f90b95ba/vyper/codegen/stmt.py#L286-L287"
                }
            ],
            "affected": [
                {
                    "vendor": "vyperlang",
                    "product": "vyper",
                    "versions": [
                        {
                            "version": ">= 0.3.8, < 0.4.0b1",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2024-04-25T17:00:54.082Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. Starting in version 0.3.8 and prior to version 0.4.0b1, when looping over a `range` of the form `range(start, start + N)`, if `start` is negative, the execution will always revert. This issue is caused by an incorrect assertion inserted by the code generation of the range `stmt.parse_For_range()`. The issue arises when `start` is signed, instead of using `sle`, `le` is used and `start` is interpreted as an unsigned integer for the comparison. If it is a negative number, its 255th bit is set to `1` and is hence interpreted as a very large unsigned integer making the assertion always fail. Any contract having a `range(start, start + N)` where `start` is a signed integer with the possibility for `start` to be negative is affected. If a call goes through the loop while supplying a negative `start` the execution will revert. Version 0.4.0b1 fixes the issue."
                }
            ],
            "source": {
                "advisory": "GHSA-ppx5-q359-pvwj",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "title": "CISA ADP Vulnrichment",
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2024-32481",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2024-04-29T19:03:15.836132Z"
                            }
                        }
                    }
                ],
                "affected": [
                    {
                        "cpes": [
                            "cpe:2.3:a:vyperlang:vyper:0.3.8:*:*:*:*:python:*:*"
                        ],
                        "vendor": "vyperlang",
                        "product": "vyper",
                        "versions": [
                            {
                                "status": "affected",
                                "version": "0.3.8",
                                "versionType": "custom",
                                "lessThanOrEqual": "0.4.0b1"
                            }
                        ],
                        "defaultStatus": "unknown"
                    }
                ],
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-06-04T17:51:33.592Z"
                }
            },
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-02T02:13:39.300Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "name": "https://github.com/vyperlang/vyper/security/advisories/GHSA-ppx5-q359-pvwj",
                        "tags": [
                            "x_refsource_CONFIRM",
                            "x_transferred"
                        ],
                        "url": "https://github.com/vyperlang/vyper/security/advisories/GHSA-ppx5-q359-pvwj"
                    },
                    {
                        "name": "https://github.com/vyperlang/vyper/commit/3de1415ee77a9244eb04bdb695e249d3ec9ed868",
                        "tags": [
                            "x_refsource_MISC",
                            "x_transferred"
                        ],
                        "url": "https://github.com/vyperlang/vyper/commit/3de1415ee77a9244eb04bdb695e249d3ec9ed868"
                    },
                    {
                        "name": "https://github.com/vyperlang/vyper/commit/5319cfbe14951e007ccdb323257e5ada869b35d5",
                        "tags": [
                            "x_refsource_MISC",
                            "x_transferred"
                        ],
                        "url": "https://github.com/vyperlang/vyper/commit/5319cfbe14951e007ccdb323257e5ada869b35d5"
                    },
                    {
                        "name": "https://github.com/vyperlang/vyper/blob/9136169468f317a53b4e7448389aa315f90b95ba/vyper/codegen/stmt.py#L286-L287",
                        "tags": [
                            "x_refsource_MISC",
                            "x_transferred"
                        ],
                        "url": "https://github.com/vyperlang/vyper/blob/9136169468f317a53b4e7448389aa315f90b95ba/vyper/codegen/stmt.py#L286-L287"
                    }
                ]
            }
        ]
    }
}