diff options
-rw-r--r-- | etc/defaults/periodic.conf | 3 | ||||
-rwxr-xr-x | etc/periodic/security/110.neggrpperm | 54 | ||||
-rw-r--r-- | etc/periodic/security/Makefile | 1 | ||||
-rw-r--r-- | share/man/man5/periodic.conf.5 | 8 |
4 files changed, 66 insertions, 0 deletions
diff --git a/etc/defaults/periodic.conf b/etc/defaults/periodic.conf index 8267ac7..29e3b00 100644 --- a/etc/defaults/periodic.conf +++ b/etc/defaults/periodic.conf @@ -160,6 +160,9 @@ daily_status_security_diff_flags="-b -u" # flags for diff output # 100.chksetuid daily_status_security_chksetuid_enable="YES" +# 110.neggrpperm +daily_status_security_neggrpperm_enable="NO" + # 200.chkmounts daily_status_security_chkmounts_enable="YES" #daily_status_security_chkmounts_ignore="^amd:" # Don't check matching diff --git a/etc/periodic/security/110.neggrpperm b/etc/periodic/security/110.neggrpperm new file mode 100755 index 0000000..68d1e7b --- /dev/null +++ b/etc/periodic/security/110.neggrpperm @@ -0,0 +1,54 @@ +#!/bin/sh - +# +# Copyright (c) 2001 The FreeBSD Project +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# $FreeBSD$ +# + +# If there is a global system configuration file, suck it in. +# +if [ -r /etc/defaults/periodic.conf ] +then + . /etc/defaults/periodic.conf + source_periodic_confs +fi + +rc=0 + +case "$daily_status_security_neggrpperm_enable" in + [Yy][Ee][Ss]) + echo "" + echo 'Checking negative group permissions:' + MP=`mount -t ufs,zfs | awk '$0 !~ /no(suid|exec)/ { print $3 }'` + n=$(find -sx $MP /dev/null -type f \ + \( \( ! -perm +010 -and -perm +001 \) -or \ + \( ! -perm +020 -and -perm +002 \) -or \ + \( ! -perm +040 -and -perm +004 \) \) \ + -exec ls -liTd \{\} \+ | tee /dev/stderr | wc -l) + [ $n -gt 0 ] && rc=1 || rc=0 + ;; +esac + +exit $rc diff --git a/etc/periodic/security/Makefile b/etc/periodic/security/Makefile index fc67723..74e7b61 100644 --- a/etc/periodic/security/Makefile +++ b/etc/periodic/security/Makefile @@ -3,6 +3,7 @@ .include <bsd.own.mk> FILES= 100.chksetuid \ + 110.neggrpperm \ 200.chkmounts \ 300.chkuid0 \ 400.passwdless \ diff --git a/share/man/man5/periodic.conf.5 b/share/man/man5/periodic.conf.5 index a3775d8..3213615 100644 --- a/share/man/man5/periodic.conf.5 +++ b/share/man/man5/periodic.conf.5 @@ -482,6 +482,14 @@ Set to .Dq Li YES to compare the modes and modification times of setuid executables with the previous day's values. +.It Va daily_status_security_neggrpperm_enable +.Pq Vt bool +Set to +.Dq Li YES +to check for files where the group of a file has less permissions than +the world at large. +When users are in more than 14 supplemental groups these negative +permissions may not be enforced via NFS shares. .It Va daily_status_security_chkmounts_enable .Pq Vt bool Set to |