CVE-2023-43652— JumpServer 安全漏洞

Non-MFA account takeover via using only SSH public key to login in jumpserver

JumpServer is an open source bastion host. As an unauthenticated user, it is possible to authenticate to the core API with a username and an SSH public key without needing a password or the corresponding SSH private key. An SSH public key should be considered public knowledge and should not used as an authentication secret alone. JumpServer provides an API for the KoKo component to validate user private key logins. This API does not verify the source of requests and will generate a personal authentication token. Given that public keys can be easily leaked, an attacker can exploit the leaked public key and username to authenticate, subsequently gaining access to the current user's information and authorized actions. This issue has been addressed in versions 2.28.20 and 3.7.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

授权机制缺失

JumpServer 安全漏洞

Jumpserver是中国杭州飞致云信息科技有限公司的一款开源堡垒机。 JumpServer 存在安全漏洞，该漏洞源于可以使用用户名和 SSH 公钥对核心 API 进行身份验证，而无需密码或相应的 SSH 私钥。

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