漏洞信息
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Vulnerability Title
vyper performs double eval of the slice args when buffer from adhoc locations
Vulnerability Description
Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. In versions 0.3.10 and prior, using the `slice` builtin can result in a double eval vulnerability when the buffer argument is either `msg.data`, `self.code` or `<address>.code` and either the `start` or `length` arguments have side-effects. It can be easily triggered only with the versions `<0.3.4` as `0.3.4` introduced the unique symbol fence. 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.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Vulnerability Type
输入验证不恰当
Vulnerability Title
Vyper 安全漏洞
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，该漏洞源于当缓冲区参数为 msg.data、self.code、<address>.code、start、length时，可能会导致安全问题。
CVSS Information
N/A
Vulnerability Type
N/A