CVE-2023-30629
Vyper is a Pythonic Smart Contract Language for the ethereum virtual machine.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.88%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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>0`.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 0.88% probability · 57th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-670
- Affected
- vyperlang/vyper
- Source
- security-advisories@github.com
References
- https://docs.vyperlang.org/en/v0.3.7/built-in-functions.html#raw_callProduct
- https://github.com/lidofinance/gate-seals/blob/051593e74df01a4131c485b4fda52e691cd4b7d8/contracts/GateSeal.vy#L164Product
- https://github.com/lidofinance/gate-seals/pull/5/filesPatch
- https://github.com/vyperlang/vyper/commit/851f7a1b3aa2a36fd041e3d0ed38f9355a58c8aePatch
- https://github.com/vyperlang/vyper/security/advisories/GHSA-w9g2-3w7p-72g9Exploit, Vendor Advisory
- https://docs.vyperlang.org/en/v0.3.7/built-in-functions.html#raw_callProduct
- https://github.com/lidofinance/gate-seals/blob/051593e74df01a4131c485b4fda52e691cd4b7d8/contracts/GateSeal.vy#L164Product
- https://github.com/lidofinance/gate-seals/pull/5/filesPatch
- https://github.com/vyperlang/vyper/commit/851f7a1b3aa2a36fd041e3d0ed38f9355a58c8aePatch
- https://github.com/vyperlang/vyper/security/advisories/GHSA-w9g2-3w7p-72g9Exploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.