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CVE-2024-43366— zkvyper ignored loop range bounds

Quick assessment

Affected
matter-labs era-compiler-vyper
Exploitation
Public or AI PoC available; prioritize validation
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存在安全漏洞，该漏洞源于 LLL IR 没有图灵不完备性限制，因此它被编译为具有更晚退出条件的循环。如果循环体包含它，它会导致资金损失或其他不良行为。

CVSS 7.5 · High EPSS 0.51% · P42
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I. Basic Information for CVE-2024-43366

Vulnerability Information
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Vulnerability Title
zkvyper ignored loop range bounds
Source: CVE Program / CVE List V5
Vulnerability Description
zkvyper is a Vyper compiler. Starting in version 1.3.12 and prior to version 1.5.3, since LLL IR has no Turing-incompletness restrictions, it is compiled to a loop with a much more late exit condition. It leads to a loss of funds or other unwanted behavior if the loop body contains it. However, more real-life use cases like iterating over an array are not affected. No contracts were affected by this issue, which was fixed in version 1.5.3. Upgrading and redeploying affected contracts is the only way to avoid the vulnerability.
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
不可达退出条件的循环(无限循环)
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存在安全漏洞，该漏洞源于 LLL IR 没有图灵不完备性限制，因此它被编译为具有更晚退出条件的循环。如果循环体包含它，它会导致资金损失或其他不良行为。
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
matter-labs era-compiler-vyper >= 1.3.12, < 1.5.3 -

II. Public POCs for CVE-2024-43366

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7862 chars
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Trigger conditions & impact
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III. Intelligence Information for CVE-2024-43366

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Vendor Advisories for CVE-2024-43366 (1)

IV. Related Vulnerabilities

Same product: era-compiler-vyper
Same vendor: matter-labs
Same weakness: CWE-835

V. Comments for CVE-2024-43366

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