CVE-2025-5689— Improper Permission Management in SSH Session Handling
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I. Basic Information for CVE-2025-5689
Vulnerability Information
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Vulnerability Title
Improper Permission Management in SSH Session Handling
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in the temporary user record that authd uses in the pre-auth NSS. As a result, a user login for the first time will be considered to be part of the root group in the context of that SSH session.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Authd 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Authd是Ubuntu开源的一个基于云的身份提供者的身份验证守护进程。 Authd 0.5.4之前版本存在安全漏洞，该漏洞源于临时用户记录问题，可能导致用户被错误识别为root组。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-5689
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IV. Related Vulnerabilities
Same vendor: Canonical
- CVE-2026-6970
authd Denial of Service and Local Privilege Escalation - CVE-2026-6369
Exposed Session Token in canonical-livepatch client snap - CVE-2026-5412
Juju CloudSpec API could leak senstive information - CVE-2026-5774
Juju API Server Denial of Service and Authentication Replay - CVE-2025-14551
Senstive information disclosure was affecting subiquity
V. Comments for CVE-2025-5689
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