CVE-2025-54070— OpenZeppelin Contracts 缓冲区错误漏洞
一分钟漏洞结论
影响对象
OpenZeppelin openzeppelin-contracts
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
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。
OpenZeppelin Contracts是OpenZeppelin开源的一个安全智能合约开发库。 OpenZeppelin Contracts 5.4.0之前版本存在缓冲区错误漏洞，该漏洞源于lastIndexOf函数可能访问未初始化内存，可能导致越界读取。
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一、 漏洞 CVE-2025-54070 基础信息
漏洞信息
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Vulnerability Title
OpenZeppelin Contracts's Bytes's lastIndexOf function with position argument performs out-of-bound memory access on empty buffers
来源: CVE Program / CVE List V5
Vulnerability Description
OpenZeppelin Contracts is a library for secure smart contract development. Starting in version 5.2.0 and prior to version 5.4.0, the `lastIndexOf(bytes,byte,uint256)` function of the `Bytes.sol` library may access uninitialized memory when the following two conditions hold: 1) the provided buffer length is empty (i.e. `buffer.length == 0`) and position is not `2**256 - 1` (i.e. `pos != type(uint256).max`). The `pos` argument could be used to access arbitrary data outside of the buffer bounds. This could lead to the operation running out of gas, or returning an invalid index (outside of the empty buffer). Processing this invalid result for accessing the `buffer` would cause a revert under normal conditions. When triggered, the function reads memory at offset `buffer + 0x20 + pos`. If memory at that location (outside the `buffer`) matches the search pattern, the function would return an out of bound index instead of the expected `type(uint256).max`. This creates unexpected behavior where callers receive a valid-looking index pointing outside buffer bounds. Subsequent memory accesses that don't check bounds and use the returned index must carefully review the potential impact depending on their setup. Code relying on this function returning `type(uint256).max` for empty buffers or using the returned index without bounds checking could exhibit undefined behavior. Users should upgrade to version 5.4.0 to receive a patch.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
来源: CVE Program / CVE List V5
Vulnerability Title
OpenZeppelin Contracts 缓冲区错误漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
OpenZeppelin Contracts是OpenZeppelin开源的一个安全智能合约开发库。 OpenZeppelin Contracts 5.4.0之前版本存在缓冲区错误漏洞，该漏洞源于lastIndexOf函数可能访问未初始化内存，可能导致越界读取。
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 |
|---|---|---|---|---|
| OpenZeppelin | openzeppelin-contracts | >= 5.2.0, < 5.4.0 | - |
|
二、漏洞 CVE-2025-54070 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2025-54070 厂商安全公告 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2025-54070
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