CVE-2026-54591: ronf asyncssh, обхождане на път

Описание

Оригинално описание

AsyncSSH is a Python package which provides an asynchronous client and server implementation of the SSHv2 protocol on top of the Python asyncio framework. Prior to 2.23.1, a malicious SSH server can write arbitrary files on the asyncssh SCP client's filesystem by sending filenames containing ../ traversal sequences because _parse_cd_args in scp.py returns server-provided names verbatim and _recv_files joins them to the destination path without enforcing the target directory boundary. This issue is fixed in version 2.23.1.

Засегнати продукти

• ronf asyncssh: < 2.23.1

Вид слабост

• CWE-22 Неправилно ограничаване на път до позволена директория

История

Други уязвимости в ronf asyncssh

• 6.5CVE-2026-62949
• 8.2CVE-2026-45309
• 5.9CVE-2026-54590

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-54591
• https://nvd.nist.gov/vuln/detail/CVE-2026-54591
• https://github.com/ronf/asyncssh/security/advisories/GHSA-2wxc-x7rj-hg8f
• https://github.com/ronf/asyncssh/commit/d730803b8e4e94c20c7580d90f94d1e05f9f58de
• https://github.com/ronf/asyncssh/releases/tag/v2.23.1