CVE-2021-48020

EUVD-2021-34890
Vyper from 0.1.0b4 before 0.3.0 contains a memory corruption vulnerability caused by an incorrect stack tip pointer when internal function calls are performed inside arrays. Contracts placing internal calls in nested array elements, external call arguments, struct literals, or raw_log topics can have memory corrupted, producing incorrect contract behavior.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
6.5 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 19.79%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
vyperlangvyper
0.1.0b4 ≤
𝑥
< 0.3.0
CNA
Common Weakness Enumeration
References
https://github.com/vyperlang/vyper/security/advisories/GHSA-22wc-c9wj-6q2v
https://www.vulncheck.com/advisories/vyper-before-0.3.0-memory-corruption-via-internal-function-calls-in-arrays