1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
# vim:syntax=apparmor
# ------------------------------------------------------------------
#
# Copyright (C) 2002-2009 Novell/SUSE
# Copyright (C) 2009-2011 Canonical Ltd.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of version 2 of the GNU General Public
# License published by the Free Software Foundation.
#
# ------------------------------------------------------------------
abi <abi/4.0>,
include <abstractions/crypto>
# (Note that the ldd profile has inlined this file; if you make
# modifications here, please consider including them in the ldd
# profile as well.)
# The __canary_death_handler function writes a time-stamped log
# message to /dev/log for logging by syslogd. So, /dev/log, timezones,
# and localisations of date should be available EVERYWHERE, so
# StackGuard, FormatGuard, etc., alerts can be properly logged.
/dev/log w,
/dev/random r,
/dev/urandom r,
# Allow access to the uuidd daemon (this daemon is a thin wrapper around
# time and getrandom()/{,u}random and, when available, runs under an
# unprivilged, dedicated user).
@{run}/uuidd/request r,
@{etc_ro}/locale/** r,
@{etc_ro}/locale.alias r,
@{etc_ro}/localtime r,
@{etc_rw}/localtime r,
/etc/writable/localtime r,
/usr/share/locale-bundle/** r,
/usr/share/locale-langpack/** r,
/usr/share/locale/ r,
/usr/share/locale/** r,
/usr/share/**/locale/** r,
/usr/share/zoneinfo{,-icu}/ r,
/usr/share/zoneinfo{,-icu}/** r,
/usr/share/X11/locale/** r,
@{run}/systemd/journal/dev-log w,
# systemd native journal API (see sd_journal_print(4))
@{run}/systemd/journal/socket w,
# Nested containers and anything using systemd-cat need this. 'r' shouldn't
# be required but applications fail without it. journald doesn't leak
# anything when reading so this is ok.
@{run}/systemd/journal/stdout rw,
/usr/lib{,32,64}/locale/** mr,
/usr/lib{,32,64}/gconv/*.so mr,
/usr/lib{,32,64}/gconv/gconv-modules* mr,
/usr/lib/@{multiarch}/gconv/*.so mr,
/usr/lib/@{multiarch}/gconv/gconv-modules* mr,
# used by glibc when binding to ephemeral ports
@{etc_ro}/bindresvport.blacklist r,
# ld.so.cache and ld are used to load shared libraries; they are best
# available everywhere
@{etc_ro}/ld.so.cache mr,
@{etc_ro}/ld.so.conf r,
@{etc_ro}/ld.so.conf.d/{,*.conf} r,
@{etc_ro}/ld.so.preload r,
@{etc_ro}/ld-musl-*.path r,
/{usr/,}lib{,32,64}/ld{,32,64}-*.so mr,
/{usr/,}lib/@{multiarch}/ld{,32,64}-*.so mr,
/{usr/,}lib/tls/i686/{cmov,nosegneg}/ld-*.so mr,
/{usr/,}lib/i386-linux-gnu/tls/i686/{cmov,nosegneg}/ld-*.so mr,
/opt/*-linux-uclibc/lib/ld-uClibc*so* mr,
# we might as well allow everything to use common libraries
/{usr/,}lib{,32,64}/** r,
/{usr/,}lib{,32,64}/**.so* mr,
/{usr/,}lib/@{multiarch}/** r,
/{usr/,}lib/@{multiarch}/**.so* mr,
/{usr/,}lib/tls/i686/{cmov,nosegneg}/*.so* mr,
/{usr/,}lib/i386-linux-gnu/tls/i686/{cmov,nosegneg}/*.so* mr,
# FIPS-140-2 versions of some crypto libraries need to access their
# associated integrity verification file, or they will abort.
/{usr/,}lib{,32,64}/.lib*.so*.hmac r,
/{usr/,}lib/@{multiarch}/.lib*.so*.hmac r,
# /dev/null is pretty harmless and frequently used
/dev/null rw,
# as is /dev/zero
/dev/zero rw,
# recent glibc uses /dev/full in preference to /dev/null for programs
# that don't have open fds at exec()
/dev/full rw,
# Sometimes used to determine kernel/user interfaces to use
@{PROC}/sys/kernel/version r,
# Depending on which glibc routine uses this file, base may not be the
# best place -- but many profiles require it, and it is quite harmless.
@{PROC}/sys/kernel/ngroups_max r,
# Used to determine if Linux is running in FIPS mode
@{PROC}/sys/crypto/fips_enabled r,
# glibc's sysconf(3) routine to determine free memory, etc
@{PROC}/meminfo r,
@{PROC}/stat r,
@{PROC}/cpuinfo r,
@{sys}/devices/system/cpu/ r,
@{sys}/devices/system/cpu/online r,
@{sys}/devices/system/cpu/possible r,
# transparent hugepage support
@{sys}/kernel/mm/transparent_hugepage/hpage_pmd_size r,
# glibc's *printf protections read the maps file
@{PROC}/@{pid}/{maps,auxv,status} r,
# some applications will display license information
/usr/share/common-licenses/** r,
# glibc statvfs
@{PROC}/filesystems r,
# glibc malloc (man 5 proc)
@{PROC}/sys/vm/overcommit_memory r,
# Allow determining the highest valid capability of the running kernel
@{PROC}/sys/kernel/cap_last_cap r,
# Allow other processes to read our /proc entries, futexes, perf tracing and
# kcmp for now (they will need 'read' in the first place). Administrators can
# override with:
# deny ptrace (readby) ...
ptrace (readby),
# Allow other processes to trace us by default (they will need 'trace' in
# the first place). Administrators can override with:
# deny ptrace (tracedby) ...
ptrace (tracedby),
# Allow us to ptrace read ourselves
ptrace (read) peer=@{profile_name},
# Allow unconfined processes to send us signals by default
signal (receive) peer=unconfined,
# Allow us to signal ourselves
signal peer=@{profile_name},
# Checking for PID existence is quite common so add it by default for now
signal (receive, send) set=("exists"),
# Allow us to create and use abstract and anonymous sockets
unix peer=(label=@{profile_name}),
# Allow unconfined processes to us via unix sockets
unix (receive) peer=(label=unconfined),
# Allow us to create abstract and anonymous sockets
unix (create),
# Allow us to getattr, getopt, setop and shutdown on unix sockets
unix (getattr, getopt, setopt, shutdown),
# Workaround https://launchpad.net/bugs/359338 until upstream handles stacked
# filesystems generally. This does not appreciably decrease security with
# Ubuntu profiles because the user is expected to have access to files owned
# by him/her. Exceptions to this are explicit in the profiles. While this rule
# grants access to those exceptions, the intended privacy is maintained due to
# the encrypted contents of the files in this directory. Files in this
# directory will also use filename encryption by default, so the files are
# further protected. Also, with the use of 'owner', this rule properly
# prevents access to the files from processes running under a different uid.
# encrypted ~/.Private and old-style encrypted $HOME
owner @{HOME}/.Private/ r,
owner @{HOME}/.Private/** mrixwlk,
# new-style encrypted $HOME
owner @{HOMEDIRS}/.ecryptfs/*/.Private/ r,
owner @{HOMEDIRS}/.ecryptfs/*/.Private/** mrixwlk,
# Include additions to the abstraction
include if exists <abstractions/base.d>
|
