{"id":"PYSEC-2023-131","details":"Vyper is a Pythonic Smart Contract Language for the ethereum virtual machine. In versions 0.3.1 through 0.3.7, the Vyper compiler generates the wrong bytecode. Any contract that uses the `raw_call` with `revert_on_failure=False` and `max_outsize=0` receives the wrong response from `raw_call`. Depending on the memory garbage, the result can be either `True` or `False`. A patch is available and, as of time of publication, anticipated to be part of Vyper 0.3.8. As a workaround, one may always put  `max_outsize\u003e0`.","aliases":["CVE-2023-30629","GHSA-w9g2-3w7p-72g9"],"modified":"2023-11-01T05:01:56.760158Z","published":"2023-04-24T22:15:00Z","references":[{"type":"WEB","url":"https://docs.vyperlang.org/en/v0.3.7/built-in-functions.html#raw_call"},{"type":"FIX","url":"https://github.com/lidofinance/gate-seals/pull/5/files"},{"type":"WEB","url":"https://github.com/lidofinance/gate-seals/blob/051593e74df01a4131c485b4fda52e691cd4b7d8/contracts/GateSeal.vy#L164"},{"type":"ADVISORY","url":"https://github.com/vyperlang/vyper/security/advisories/GHSA-w9g2-3w7p-72g9"},{"type":"FIX","url":"https://github.com/vyperlang/vyper/commit/851f7a1b3aa2a36fd041e3d0ed38f9355a58c8ae"}],"affected":[{"package":{"name":"vyper","ecosystem":"PyPI","purl":"pkg:pypi/vyper"},"ranges":[{"type":"GIT","repo":"https://github.com/vyperlang/vyper","events":[{"introduced":"0"},{"fixed":"851f7a1b3aa2a36fd041e3d0ed38f9355a58c8ae"}]},{"type":"ECOSYSTEM","events":[{"introduced":"0.3.1"},{"fixed":"0.3.8"}]}],"versions":["0.3.1","0.3.2","0.3.3","0.3.4","0.3.5","0.3.6","0.3.7"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/vyper/PYSEC-2023-131.yaml"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}