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{"bugzilla": {"description": "ansible-core: user module generate_ssh_key follows a symlinked ~/.ssh enabling local privilege escalation (incomplete fix of CVE-2024-9902)", "id": "2567189", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2567189"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-59", "details": ["A flaw was found in the ansible-core user module. When generate_ssh_key is enabled, User.ssh_key_gen() guards the key files against symlinks but checks the ~/.ssh directory only with os.path.exists(). An unprivileged user on a managed node who replaces their ~/.ssh with a symlink to an existing root-writable directory causes the privileged module to write the generated key pair through the symlink and then chown both files to that user. Because such files can be dropped into directories processed by schedulers (e.g. /etc/cron.daily) or dynamic MOTD (/etc/update-motd.d), the user can escalate to root on the managed node. This is an incomplete fix of CVE-2024-9902."], "mitigation": {"lang": "en:us", "value": "Do not use generate_ssh_key: yes against accounts whose home directory is controlled by an untrusted user; pre-create ~/.ssh as a real directory owned appropriately before running the module, or generate the key as the target account itself (dropping to its uid/gid) rather than as root."}, "name": "CVE-2026-123037", "public_date": "2026-11-05T09:30:21Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-123037\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-123037"], "statement": "This affects the ansible-core user module and is an incomplete fix of CVE-2024-9902. Exploitation requires a pre-existing unprivileged account on the managed node, that the attacker controls their own home directory, and that an administrator subsequently runs the user module with generate_ssh_key against that account; impact further depends on a scheduler (cron.daily) or dynamic MOTD being active. It does not require control of the Ansible control node or any playbook modification.", "threat_severity": "Moderate"}

{"created": "2026-11-05T15:15:19.576883+00:00", "updated": "2026-11-05T15:15:19.577202+00:00", "vendors": []}