Vulnerability Information
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Vulnerability Title
Jail escape by a privileged user via nullfs
Vulnerability Description
By default, jailed processes cannot mount filesystems, including nullfs(4). However, the allow.mount.nullfs option enables mounting nullfs filesystems, subject to privilege checks. If a privileged user within a jail is able to nullfs-mount directories, a limitation of the kernel's path lookup logic allows that user to escape the jail's chroot, yielding access to the full filesystem of the host or parent jail. In a jail configured to allow nullfs(4) mounts from within the jail, the jailed root user can escape the jail's filesystem root.
CVSS Information
N/A
Vulnerability Type
特权管理不恰当
Vulnerability Title
FreeBSD 安全漏洞
Vulnerability Description
FreeBSD是FreeBSD基金会的一套类Unix操作系统。 FreeBSD存在安全漏洞，该漏洞源于内核路径查找逻辑存在限制，可能导致配置了allow.mount.nullfs选项的jail中的特权用户逃逸jail的chroot。
CVSS Information
N/A
Vulnerability Type
N/A