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CVE-2026-55074— Ansible FreeBSD Jail Connection Plugin: Jail escape via symlink following in put_file (host-side root mv)

一分钟漏洞结论

影响对象
chofstede ansible_jailexec
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

Ansible FreeBSD Jail Connection Plugin is an Ansible connection plugin for FreeBSD Jails via jexec. Through version 1.3.0, the jailexec connection plugin's put_file resolved a transfer's destination to a path on the jail host ( + ) and ran mkdir -p and mv ther

CVSS 8.2 · High EPSS 0.32% · P25

影响版本矩阵 1

厂商产品 版本范围状态
chofstede ansible_jailexec < 2.0.0 affected
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一、 漏洞 CVE-2026-55074 基础信息

漏洞信息

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Vulnerability Title
Ansible FreeBSD Jail Connection Plugin: Jail escape via symlink following in put_file (host-side root mv)
来源: CVE Program / CVE List V5
Vulnerability Description
Ansible FreeBSD Jail Connection Plugin is an Ansible connection plugin for FreeBSD Jails via jexec. Through version 1.3.0, the jailexec connection plugin's put_file resolved a transfer's destination to a path on the jail host ( + ) and ran mkdir -p and mv there as root on the host. Those commands follow symbolic links, and the path was operated on outside the jail, so a symlink existing inside the jail was followed by the host-side, root-privileged mv. A party controlling content inside a managed jail (the jail's root, or any process able to create a symlink in a directory an Ansible task later writes to) can therefore cause an arbitrary root-owned write on the host, outside the jail — a full jail escape. Arbitrary root-owned host writes are readily escalated to host compromise (e.g. cron, rc.d, authorized_keys). Preconditions for this vulnerability are that the operator runs a copy/template/fetch-style task (anything using put_file) against the jail, and the attacker can place a symlink inside the jail at or above the task's destination before the transfer runs. This issue has been fixed in version 2.0.0.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
chofstede ansible_jailexec < 2.0.0 -

二、漏洞 CVE-2026-55074 的公开POC

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三、漏洞 CVE-2026-55074 的情报信息

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CVE-2026-55074 补丁与修复 (1)

CVE-2026-55074 其他参考 (3)

IV. Related Vulnerabilities

Same weakness: CWE-59

V. Comments for CVE-2026-55074

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