Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Vyperlang | Vyper | <= 0.3.1 |
Related Weaknesses (CWE)
References
- https://github.com/vyperlang/vyper/commit/2c73f8352635c0a433423a5b94740de1a118e5PatchThird Party Advisory
- https://github.com/vyperlang/vyper/security/advisories/GHSA-7vrm-3jc8-5wwmPatchThird Party Advisory
- https://github.com/vyperlang/vyper/commit/2c73f8352635c0a433423a5b94740de1a118e5PatchThird Party Advisory
- https://github.com/vyperlang/vyper/security/advisories/GHSA-7vrm-3jc8-5wwmPatchThird Party Advisory
FAQ
What is CVE-2022-24787?
CVE-2022-24787 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 in...
How severe is CVE-2022-24787?
CVE-2022-24787 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-24787?
Check the references section above for vendor advisories and patch information. Affected products include: Vyperlang Vyper.