Vulnerability · Published Oct 6, 2021 · Assigned by GitHub_M
CVE-2021-41121Memory corruption in Vyper
High 7.5
In plain English
A high-severity memory corruption in vyper from vyperlang. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.1%top 34.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Vyper is a Pythonic Smart Contract Language for the EVM. In affected versions when performing a function call inside a literal struct, there is a memory corruption issue that occurs because of an incorrect pointer to the the top of the stack. This issue has been resolved in version 0.3.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | vyper | 0.3.0 | GHSA-xv8x-pr4h-73jv |
| PyPI | vyper | 0.3.0 | PYSEC-2021-365 |
Affected products (as reported)
Weakness: CWE-119 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/vyperlang/vyper/pull/2447 x_refsource_MISC
- https://github.com/vyperlang/vyper/security/advisories/GHSA-xv8x-pr4h-73jv x_refsource_CONFIRM