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84 lines
3.3 KiB
Plaintext
84 lines
3.3 KiB
Plaintext
2 years ago
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# Lenient profile that is intended to be used when 'Ux' is desired but
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# does not provide enough environment sanitizing. This effectively is an
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# open profile that blacklists certain known dangerous files and also
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# does not allow any capabilities. For example, it will not allow 'm' on files
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# owned be the user invoking the program. While this provides some additional
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# protection, please use with care as applications running under this profile
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# are effectively running without any AppArmor protection. Use this profile
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# only if the process absolutely must be run (effectively) unconfined.
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#
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# Usage:
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# Because this abstraction defines the sanitized_helper profile, it must only
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# be #included once. Therefore this abstraction should typically not be
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# included in other abstractions so as to avoid parser errors regarding
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# multiple definitions.
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#
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# Limitations:
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# 1. This does not work for root owned processes, because of the way we use
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# owner matching in the sanitized helper. We could do a better job with
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# this to support root, but it would make the policy harder to understand
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# and going unconfined as root is not desirable any way.
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#
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# 2. For this sanitized_helper to work, the program running in the sanitized
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# environment must open symlinks directly in order for AppArmor to mediate
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# it. This is confirmed to work with:
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# - compiled code which can load shared libraries
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# - python imports
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# It is known not to work with:
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# - perl includes
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# 3. Sanitizing ruby and java
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#
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# Use at your own risk. This profile was developed as an interim workaround for
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# LP: #851986 until AppArmor utilizes proper environment filtering.
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profile sanitized_helper {
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#include <abstractions/base>
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#include <abstractions/X>
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# Allow all networking
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network inet,
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network inet6,
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# Allow all DBus communications
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#include <abstractions/dbus-session-strict>
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#include <abstractions/dbus-strict>
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dbus,
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# Needed for Google Chrome
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ptrace (trace) peer=**//sanitized_helper,
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# Allow exec of anything, but under this profile. Allow transition
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# to other profiles if they exist.
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/{usr/,usr/local/,}{bin,sbin}/* Pixr,
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# Allow exec of libexec applications in /usr/lib* and /usr/local/lib*
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/usr/{,local/}lib*/{,**/}* Pixr,
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# Allow exec of software-center scripts. We may need to allow wider
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# permissions for /usr/share, but for now just do this. (LP: #972367)
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/usr/share/software-center/* Pixr,
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# Allow exec of texlive font build scripts (LP: #1010909)
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/usr/share/texlive/texmf{,-dist}/web2c/{,**/}* Pixr,
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# While the chromium and chrome sandboxes are setuid root, they only link
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# in limited libraries so glibc's secure execution should be enough to not
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# require the santized_helper (ie, LD_PRELOAD will only use standard system
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# paths (man ld.so)).
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/usr/lib/chromium-browser/chromium-browser-sandbox PUxr,
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/usr/lib/chromium{,-browser}/chrome-sandbox PUxr,
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/opt/google/chrome{,-beta,-unstable}/chrome-sandbox PUxr,
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/opt/google/chrome{,-beta,-unstable}/google-chrome Pixr,
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/opt/google/chrome{,-beta,-unstable}/chrome Pixr,
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/opt/google/chrome{,-beta,-unstable}/{,**/}lib*.so{,.*} m,
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# Full access
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/ r,
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/** rwkl,
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/{,usr/,usr/local/}lib{,32,64}/{,**/}*.so{,.*} m,
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# Dangerous files
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audit deny owner /**/* m, # compiled libraries
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audit deny owner /**/*.py* r, # python imports
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}
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