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CVE-2024-32647— vyper performs double eval of raw_args in create_from_blueprint

Quick assessment

Affected
vyperlang vyper
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Vyper是EVM 的 Pythonic 智能合约语言。 Vyper 0.3.10 及之前版本存在安全漏洞，该漏洞源于使用 create_from_blueprint内置函数可能会导致安全问题。

CVSS 5.3 · Medium EPSS 0.46% · P38

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2024-32647

Vulnerability Information
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Vulnerability Title
vyper performs double eval of raw_args in create_from_blueprint
Source: CVE Program / CVE List V5
Vulnerability Description
Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. In versions 0.3.10 and prior, using the `create_from_blueprint` builtin can result in a double eval vulnerability when `raw_args=True` and the `args` argument has side-effects. It can be seen that the `_build_create_IR` function of the `create_from_blueprint` builtin doesn't cache the mentioned `args` 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 exist.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
动态执行代码中指令转义处理不恰当(Eval注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Vyper 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vyper是EVM 的 Pythonic 智能合约语言。 Vyper 0.3.10 及之前版本存在安全漏洞，该漏洞源于使用 create_from_blueprint内置函数可能会导致安全问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
vyperlang vyper <= 0.3.10 -

II. Public POCs for CVE-2024-32647

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III. Intelligence Information for CVE-2024-32647

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Vendor Advisories for CVE-2024-32647 (1)

Other References for CVE-2024-32647 (1)

Same Patch Batch · vyperlang · 2024-04-25 · 6 CVEs total

CVE-2024-32649 5.3 MEDIUM vyper performs double eval of the argument of sqrt
CVE-2024-32481 5.3 MEDIUM vyper's range(start, start + N) reverts for negative numbers
CVE-2024-32648 5.3 MEDIUM vyper default functions don't respect nonreentrancy keys
CVE-2024-32646 5.3 MEDIUM vyper performs double eval of the slice args when buffer from adhoc locations
CVE-2024-32645 5.3 MEDIUM vyper performs incorrect topic logging in raw_log

IV. Related Vulnerabilities

Same product: vyper
Same vendor: vyperlang
Same weakness: CWE-95

V. Comments for CVE-2024-32647

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