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usermanage: allow groupadd to lookup dynamic users from systemd 

On a Debian 10 test virtual machine, when installing packages adds a
group, the following AVC occurs:

    type=USER_AVC msg=audit(1578863991.588:575): pid=381 uid=104
    auid=4294967295 ses=4294967295 subj=system_u:system_r:system_dbusd_t
    msg='avc:  denied  { send_msg } for msgtype=method_call
    interface=org.freedesktop.systemd1.Manager
    member=LookupDynamicUserByName dest=org.freedesktop.systemd1
    spid=13759 tpid=1 scontext=unconfined_u:unconfined_r:groupadd_t
    tcontext=system_u:system_r:init_t tclass=dbus permissive=1
    exe="/usr/bin/dbus-daemon" sauid=104 hostname=? addr=? terminal=?'

Allow groupadd to use nss-systemd, which calls DBUS method
LookupDynamicUserByName().

Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
This commit is contained in:
Nicolas Iooss 2020-01-15 22:01:08 +01:00
parent 8426d24740
commit 7558698ab1
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1 changed files with 4 additions and 0 deletions
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4
policy/modules/admin/usermanage.te
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@ -277,6 +277,10 @@ optional_policy(`
rpm_rw_pipes(groupadd_t) rpm_rw_pipes(groupadd_t)
') ')
optional_policy(`
systemd_use_nss(groupadd_t)
')
optional_policy(` optional_policy(`
unconfined_use_fds(groupadd_t) unconfined_use_fds(groupadd_t)
') ')