CVE-2026-48108
Russh: SSH identification parsing accepted non-canonical client banners and did not bound pre-banner input
描述
Russh is a Rust SSH client & server library. From version 0.34.0-beta.1 to before version 0.61.0, russh did not enforce the SSH identification-string rules as deliberately as OpenSSH. In particular, the server-side identification reader used the same permissive path as the client, allowing pre-banner lines from clients, and the reader did not enforce a bounded number of pre-banner lines. For a library server built on russh, this could allow a remote peer to hold connection setup resources in the cleartext pre-authentication phase with malformed identification input that should have been rejected early. This issue has been patched in version 0.61.0.
如何修補 CVE-2026-48108
要修補 CVE-2026-48108,請將受影響套件升級到下列已修補版本。
- —升級至 0.61.0 或更新版本
- —未列出修補版本
CVE-2026-48108 正在被利用嗎?
目前沒有被利用訊號。CVE-2026-48108 既不在 CISA KEV 也沒有最新的 EPSS 分數。
受影響套件(2)
- >= 0.34.0-beta.1, < 0.61.0
- from 0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |