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Unprivileged user namespace creation is allowed an will result in a transition into the unprivileged_userns profile. The unprivileged_userns profile with then deny all capabilities within the profile. Execution of applications is allowed within the unprivileged_userns profile but, they will result in a stack with the unprivileged_userns profile, that is to say the unprivileged_userns profile can not be dropped (capabilities can not be gained). If the unprivileged_userns profile does not exist, unprivileged user namespace creation is denied as before. Signed-off-by: Georgia Garcia <georgia.garcia@canonical.com>
27 lines
699 B
Text
27 lines
699 B
Text
# Special profile transitioned to by unconfined when creating an unprivileged
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# user namespace.
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#
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abi <abi/4.0>,
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include <tunables/global>
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profile unprivileged_userns {
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audit deny capability,
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audit deny change_profile,
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# allow block to be replaced by allow when x dominance test is fixed
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#allow all,
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allow network,
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allow signal,
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allow dbus,
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allow file rwlkm /**,
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allow unix,
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allow mqueue,
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allow ptrace,
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allow userns,
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# stack children to strip capabilities
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allow pix /** -> &unprivileged_userns ,
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# Site-specific additions and overrides. See local/README for details.
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include if exists <local/unprivileged_userns>
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}
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