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CVE-2023-30629— Vyper's raw_call with outsize=0 and revert_on_failure=False returns incorrect success value

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 0.3.1至0.3.7版本存在安全漏洞，该漏洞源于Vyper 编译器生成了错误的字节码。

CVSS 7.5 · High EPSS 0.88% · P58

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2023-30629

Vulnerability Information
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Vulnerability Title
Vyper's raw_call with outsize=0 and revert_on_failure=False returns incorrect success value
Source: CVE Program / CVE List V5
Vulnerability Description
Vyper is a Pythonic Smart Contract Language for the ethereum virtual machine. In versions 0.3.1 through 0.3.7, the Vyper compiler generates the wrong bytecode. Any contract that uses the `raw_call` with `revert_on_failure=False` and `max_outsize=0` receives the wrong response from `raw_call`. Depending on the memory garbage, the result can be either `True` or `False`. A patch is available and, as of time of publication, anticipated to be part of Vyper 0.3.8. As a workaround, one may always put `max_outsize>0`.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
控制流实现总是不正确
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 0.3.1至0.3.7版本存在安全漏洞，该漏洞源于Vyper 编译器生成了错误的字节码。
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 >= 0.3.1, <= 0.3.7 -

II. Public POCs for CVE-2023-30629

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III. Intelligence Information for CVE-2023-30629

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Patches & Fixes for CVE-2023-30629 (2)

Vendor Advisories for CVE-2023-30629 (1)

Other References for CVE-2023-30629 (2)

IV. Related Vulnerabilities

Same product: vyper
Same vendor: vyperlang
Same weakness: CWE-670

V. Comments for CVE-2023-30629

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