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MAC_SEEOTHERUIDS(4) Kernel Interfaces Manual MAC_SEEOTHERUIDS(4) NAME mac_seeotheruids -- simple policy controlling whether users see other users SYNOPSIS To compile the policy into your kernel, place the following lines in your kernel configuration file: options MAC options MAC_SEEOTHERUIDS Alternately, to load the module at boot time, place the following line in your kernel configuration file: options MAC and in loader.conf(5): mac_seeotheruids_load="YES" DESCRIPTION The mac_seeotheruids policy module, when enabled, denies users to see processes or sockets owned by other users. To enable mac_seeotheruids, set the sysctl OID security.mac.seeotheruids.enabled to 1. To permit superuser awareness of other credentials by virtue of privilege, set the sysctl OID security.mac.seeotheruids.suser_privileged to 1. To allow users to see processes and sockets owned by the same primary group, set the sysctl OID security.mac.seeotheruids.primarygroup_enabled to 1. To allow processes with a specific group ID to be exempt from the pol- icy, set the sysctl OID security.mac.seeotheruids.specificgid_enabled to 1, and security.mac.seeotheruids.specificgid to the group ID to be exempted. Label Format No labels are defined for mac_seeotheruids. SEE ALSO mac(4), mac_biba(4), mac_bsdextended(4), mac_ddb(4), mac_ifoff(4), mac_lomac(4), mac_mls(4), mac_none(4), mac_partition(4), mac_portacl(4), mac_test(4), mac(9) HISTORY The mac_seeotheruids policy module first appeared in FreeBSD 5.0 and was developed by the TrustedBSD Project. AUTHORS This software was contributed to the FreeBSD Project by Network Asso- ciates Labs, the Security Research Division of Network Associates Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS research program. BUGS While the MAC Framework design is intended to support the containment of the root user, not all attack channels are currently protected by entry point checks. As such, MAC Framework policies should not be re- lied on, in isolation, to protect against a malicious privileged user. FreeBSD 14.3 July 25, 2015 MAC_SEEOTHERUIDS(4)
NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | HISTORY | AUTHORS | BUGS
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