{"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"}]}]}}