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CVE-2023-42443— Vyper 缓冲区错误漏洞

一分钟漏洞结论

影响对象
vyperlang vyper
利用判断
存在公开或 AI PoC,应优先验证
建议动作
优先检查厂商安全公告和参考链接中的修复版本;无法立即升级时,限制受影响服务暴露并加强监测。

Vyper是EVM 的 Pythonic 智能合约语言。 Vyper 0.3.10之前版本存在缓冲区错误漏洞,该漏洞源于在某些情况下,内置函数使用的内存create_from_blueprint可能create_copy_of会损坏。

CVSS 8.1 · High EPSS 0.83% · P56
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一、 漏洞 CVE-2023-42443 基础信息

漏洞信息

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Vulnerability Title
Vyper vulnerable to memory corruption in certain builtins utilizing `msize`
来源: CVE Program / CVE List V5
Vulnerability Description
Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine (EVM). In version 0.3.9 and prior, under certain conditions, the memory used by the builtins `raw_call`, `create_from_blueprint` and `create_copy_of` can be corrupted. For `raw_call`, the argument buffer of the call can be corrupted, leading to incorrect `calldata` in the sub-context. For `create_from_blueprint` and `create_copy_of`, the buffer for the to-be-deployed bytecode can be corrupted, leading to deploying incorrect bytecode. Each builtin has conditions that must be fulfilled for the corruption to happen. For `raw_call`, the `data` argument of the builtin must be `msg.data` and the `value` or `gas` passed to the builtin must be some complex expression that results in writing to the memory. For `create_copy_of`, the `value` or `salt` passed to the builtin must be some complex expression that results in writing to the memory. For `create_from_blueprint`, either no constructor parameters should be passed to the builtin or `raw_args` should be set to True, and the `value` or `salt` passed to the builtin must be some complex expression that results in writing to the memory. As of time of publication, no patched version exists. The issue is still being investigated, and there might be other cases where the corruption might happen. When the builtin is being called from an `internal` function `F`, the issue is not present provided that the function calling `F` wrote to memory before calling `F`. As a workaround, the complex expressions that are being passed as kwargs to the builtin should be cached in memory prior to the call to the builtin.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
来源: CVE Program / CVE List V5
Vulnerability Title
Vyper 缓冲区错误漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Vyper是EVM 的 Pythonic 智能合约语言。 Vyper 0.3.10之前版本存在缓冲区错误漏洞,该漏洞源于在某些情况下,内置函数使用的内存create_from_blueprint可能create_copy_of会损坏。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

受影响产品

厂商 产品 影响版本 CPE 订阅
vyperlang vyper <= 0.3.9 -

二、漏洞 CVE-2023-42443 的公开POC

# POC 描述 源链接 神龙链接
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Qwen3.6-35B-A3B · 6749 chars
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三、漏洞 CVE-2023-42443 的情报信息

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CVE-2023-42443 厂商安全公告 (1)

CVE-2023-42443 其他参考 (1)

IV. Related Vulnerabilities

V. Comments for CVE-2023-42443

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