ethereum go_ethereum 数值计算不正确

CVE编号

CVE-2020-26241

利用情况

暂无

补丁情况

N/A

披露时间

2020-11-25

漏洞描述

Go Ethereum, or "Geth", is the official Golang implementation of the Ethereum protocol. This is a Consensus vulnerability in Geth before version 1.9.17 which can be used to cause a chain-split where vulnerable nodes reject the canonical chain. Geth's pre-compiled dataCopy (at 0x00...04) contract did a shallow copy on invocation. An attacker could deploy a contract that writes X to an EVM memory region R, then calls 0x00..04 with R as an argument, then overwrites R to Y, and finally invokes the RETURNDATACOPY opcode. When this contract is invoked, a consensus-compliant node would push X on the EVM stack, whereas Geth would push Y. This is fixed in version 1.9.17.

解决建议

建议您更新当前系统或软件至最新版，完成漏洞的修复。

参考链接
https://blog.ethereum.org/2020/11/12/geth_security_release/
https://github.com/ethereum/go-ethereum/security/advisories/GHSA-69v6-xc2j-r2jf

受影响软件情况

#	类型	厂商	产品	版本	影响面
1
	运行在以下环境
	应用	ethereum	go_ethereum	*		Up to (excluding) 1.9.17

CVSS3评分 7.1

• 攻击路径 网络
• 攻击复杂度 低
• 权限要求 低
• 影响范围 未更改
• 用户交互 无
• 可用性 低
• 保密性 无
• 完整性 高

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L CWE-ID 漏洞类型 CWE-682 数值计算不正确