CVE-2023-41052
MEDIUM5.3EPSS 0.09%incorrect order of evaluation of side effects for some builtins
Description
### Impact The order of evaluation of the arguments of the builtin functions `uint256_addmod`, `uint256_mulmod`, `ecadd` and `ecmul` does not follow source order. • For `uint256_addmod(a,b,c)` and `uint256_mulmod(a,b,c)`, the order is `c,a,b`. • For `ecadd(a,b)` and `ecmul(a,b)`, the order is `b,a`. Note that this behaviour is problematic when the evaluation of one of the arguments produces side effects that other arguments depend on. ### Patches https://github.com/vyperlang/vyper/pull/3583 ### Workarounds When using builtins from the list above, make sure that the arguments of the expression do not produce side effects or, if one does, that no other argument is dependent on those side effects. ### References _Are there any links users can visit to find out more?_
Affected packages (2)
- PyPI/vyperfrom 0, < 0.3.10rc1
- PyPI/vyperfrom 0, < 0.3.10rc1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
References (5)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2023-41052
- PATCHhttps://github.com/vyperlang/vyper
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/vyper/PYSEC-2023-168.yaml
- WEBhttps://github.com/vyperlang/vyper/pull/3583
- WEBhttps://github.com/vyperlang/vyper/security/advisories/GHSA-4hg4-9mf5-wxxq