漏洞信息
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Vulnerability Title
SSHFS: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Vulnerability Description
SSHFS is a network filesystem client for connecting to SSH servers. From version 1.4 until 3.7.6, SSHFS accepts a bracketed mount source such as [-oProxyCommand=CMD]:/path and find_base_path() removes the brackets, leaving a host value that begins with - and is passed directly to ssh as a command-line argument. When a caller also supplies a path-valued sftp_server, ssh treats the normalized host as an option and the server path as its destination, causing an injected ProxyCommand to execute locally before any connection or authentication succeeds. The attack requires a caller or wrapper that passes an attacker-controlled mount source to SSHFS with the required sftp_server configuration and results in arbitrary command execution as the user running SSHFS. This issue is fixed in version 3.7.6.
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Vulnerability Type
参数注入或修改
Vulnerability Title
libfuse sshfs 命令注入漏洞
Vulnerability Description
libfuse sshfs是libfuse组织的一款基于SSH协议的文件系统挂载工具。 libfuse sshfs 1.4版本至3.7.6之前版本存在命令注入漏洞,该漏洞源于find_base_path()函数处理形如[-oProxyCommand=CMD]:/path的挂载源时移除括号后未正确验证主机值,导致以-开头的主机值被直接作为ssh命令行参数传递,当提供路径值的sftp_server时,攻击者可通过注入ProxyCommand在连接或身份验证前以运行SSHFS的用户身份执行任意命令。
CVSS Information
N/A
Vulnerability Type
N/A