Date: Mon, 13 Sep 2021 16:52:45 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 258481] Jail information leak via zfs kstats Message-ID: <bug-258481-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D258481 Bug ID: 258481 Summary: Jail information leak via zfs kstats Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Many People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: asomers@FreeBSD.org A jailed user can determine the names and throughput of ZFS datasets that aren't accessible in the jail, by querying the kstat.zfs.zroot.dataset tree= .=20 For example: [asomers@universe14a ~]$ sysctl kstat.zfs | grep dataset_name kstat.zfs.zroot.dataset.objset-0x81.dataset_name: zroot/var/tmp kstat.zfs.zroot.dataset.objset-0x7a.dataset_name: zroot/var/spool kstat.zfs.zroot.dataset.objset-0x73.dataset_name: zroot/var/run kstat.zfs.zroot.dataset.objset-0x6c.dataset_name: zroot/var/log kstat.zfs.zroot.dataset.objset-0x65.dataset_name: zroot/var/empty kstat.zfs.zroot.dataset.objset-0x5e.dataset_name: zroot/var/db kstat.zfs.zroot.dataset.objset-0x8f.dataset_name: zroot/var/cache/pkg kstat.zfs.zroot.dataset.objset-0x88.dataset_name: zroot/var/cache kstat.zfs.zroot.dataset.objset-0x57.dataset_name: zroot/var kstat.zfs.zroot.dataset.objset-0x29.dataset_name: zroot/usr/src kstat.zfs.zroot.dataset.objset-0x45.dataset_name: zroot/usr/obj kstat.zfs.zroot.dataset.objset-0x50.dataset_name: zroot/usr/local kstat.zfs.zroot.dataset.objset-0x3b.dataset_name: zroot/usr kstat.zfs.zroot.dataset.objset-0x34.dataset_name: zroot/tmp kstat.zfs.zroot.dataset.objset-0x39b.dataset_name: zroot/j/jails/universe14a/scratch kstat.zfs.zroot.dataset.objset-0x596.dataset_name: zroot/j/jails/universe14a/home kstat.zfs.zroot.dataset.objset-0xad.dataset_name: zroot/j/jails/universe14a kstat.zfs.zroot.dataset.objset-0x1b0.dataset_name: zroot/j/jails/universe13a/scratch kstat.zfs.zroot.dataset.objset-0x1aa.dataset_name: zroot/j/jails/universe13a/home kstat.zfs.zroot.dataset.objset-0x1a4.dataset_name: zroot/j/jails/universe13a kstat.zfs.zroot.dataset.objset-0x1cd.dataset_name: zroot/j/jails/universe12a/scratch kstat.zfs.zroot.dataset.objset-0x1d3.dataset_name: zroot/j/jails/universe12a/home kstat.zfs.zroot.dataset.objset-0x11e.dataset_name: zroot/j/jails/universe12a kstat.zfs.zroot.dataset.objset-0xde.dataset_name: zroot/j/jails/universe11a/scratch kstat.zfs.zroot.dataset.objset-0xd2.dataset_name: zroot/j/jails/universe11a/home kstat.zfs.zroot.dataset.objset-0x98.dataset_name: zroot/j/jails/universe11a kstat.zfs.zroot.dataset.objset-0x59.dataset_name: zroot/j/jails kstat.zfs.zroot.dataset.objset-0x3f.dataset_name: zroot/j kstat.zfs.zroot.dataset.objset-0x192ec.dataset_name: zroot/git kstat.zfs.zroot.dataset.objset-0x2d.dataset_name: zroot/home kstat.zfs.zroot.dataset.objset-0x15.dataset_name: zroot --=20 You are receiving this mail because: You are the assignee for the bug.=
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