CVE-2022-24787
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 (1.01%). 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 version 0.3.1 and prior, bytestrings can have dirty bytes in them, resulting in the word-for-word comparisons giving incorrect results. Even without dirty nonzero bytes, two bytestrings can compare to equal if one ends with `"\x00"` because there is no comparison of the length. A patch is available and expected to be part of the 0.3.2 release. There are currently no known workarounds.
- 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
- 1.01% probability · 61th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-697
- Affected
- vyperlang/vyper
- Source
- security-advisories@github.com
References
- https://github.com/vyperlang/vyper/commit/2c73f8352635c0a433423a5b94740de1a118e508Patch, Third Party Advisory
- https://github.com/vyperlang/vyper/security/advisories/GHSA-7vrm-3jc8-5wwmPatch, Third Party Advisory
- https://github.com/vyperlang/vyper/commit/2c73f8352635c0a433423a5b94740de1a118e508Patch, Third Party Advisory
- https://github.com/vyperlang/vyper/security/advisories/GHSA-7vrm-3jc8-5wwmPatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.