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Vulnerability CVE-2022-24787
Published: 2022-04-04
| 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. |
Type:
CWE-697 (Insufficient Comparison)
CVSS2 => (AV:N/AC:L/Au:N/C:N/I:P/A:N)
| CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
5/10 |
2.9/10 |
10/10 |
| Exploit range |
Attack complexity |
Authentication |
Remote |
Low |
No required |
| Confidentiality impact |
Integrity impact |
Availability impact |
None |
Partial |
None |
References: |
https://github.com/vyperlang/vyper/commit/2c73f8352635c0a433423a5b94740de1a118e508
https://github.com/vyperlang/vyper/security/advisories/GHSA-7vrm-3jc8-5wwm
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