Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
The scp client in OpenSSH 8.2 incorrectly sends duplicate responses to the server upon a utimes system call failure, which allows a malicious unprivileged user on the remote server to overwrite arbitrary files in the client's download directory by creating a crafted subdirectory anywhere on the remote server. The victim must use the command scp -rp to download a file hierarchy containing, anywhere inside, this crafted subdirectory. NOTE: the vendor points out that "this attack can achieve no more than a hostile peer is already able to achieve within the scp protocol" and "utimes does not fail under normal circumstances.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
OpenSSH 输入验证错误漏洞
Vulnerability Description
OpenSSH（OpenBSD Secure Shell）是OpenBSD计划组的一套用于安全访问远程计算机的连接工具。该工具是SSH协议的开源实现，支持对所有的传输进行加密，可有效阻止窃听、连接劫持以及其他网络级的攻击。 OpenSSH 8.2版本中存在安全漏洞，该漏洞源于在utimes系统调用失败时，scp客户端错误地向服务器发送了重复的响应。攻击者可通过在远程服务器上创建子目录利用该漏洞覆盖客户端下载目录中的任意文件。
CVSS Information
N/A
Vulnerability Type
N/A