RCE in Vyperlang Vyper
CVE-2024-32649
Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. In versions 0.3.10 and prior, using the `sqrt` builtin can result in double eval vulnerability when the argument has side-effects. It can be seen that the `build_IR` function of the `sqrt` builtin doesn't cache the argument to the stack. As such, it can be evaluated multiple times (instead of retrieving the value from the stack). No vulnerable production contracts were found. Additionally, double evaluation of side-effects should be easily discoverable in client tests. As such, the impact is low. As of time of publication, no fixed versions are available.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (37.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Vyperlang Vyper — versions <= 0.3.10
Weakness classification (CWE)
References
- github.com/vyperlang/vyper/security/advisories/GHSA-5jrj-52x8-m64h (Vendor Advisory)
Frequently asked questions
- What is CVE-2024-32649?
- CVE-2024-32649 is a medium-severity vulnerability in Vyperlang Vyper, classified under Eval Injection. CVSS score: 5.3/10. Published 2024-04-25.
- How severe is CVE-2024-32649?
- Medium severity. CVSS v3 base score is 5.3 out of 10.