漏洞信息
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Vulnerability Title
AsyncSSH AuthorizedKeysFile username substitution bypass through ~ and environment expansion
Vulnerability Description
AsyncSSH is a Python package which provides an asynchronous client and server implementation of the SSHv2 protocol on top of the Python asyncio framework. Version 2.23.0 contains an incomplete fix for CVE-2026-45309 in SSHServerConfig._set_tokens that blocks /, , and .. before %u substitution in AuthorizedKeysFile but does not block a leading ~ or ${ENV}, allowing later expansion in _expand_val and Path(filename).expanduser() to escape the intended authorized-keys directory. This issue is fixed in version 2.23.1.
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Vulnerability Title
Ron Frederick AsyncSSH 路径遍历漏洞
Vulnerability Description
Ron Frederick AsyncSSH是Ron Frederick个人开发者的一款异步SSH协议库。 AsyncSSH 2.23.1之前版本存在安全漏洞,该漏洞源于AuthorizedKeysFile路径处理中不完整的修复,未能阻止前导~或${ENV}扩展,导致绕过预期的授权密钥目录限制。
CVSS Information
N/A
Vulnerability Type
N/A