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In permissive mode, calling restorecon with a bad label in file_contexts does not verify the label's existence in the loaded policy. This results in any label successfully applying to a file, as long as the file exists. This issue has two assumptions: 1) file_contexts must be manually updated with the invalid label. Running `semanage fcontext` will error when attempting to add an invalid label to file_contexts. 2) the system must be in permissive. Although applying an invalid label in enforcing gives an error and fails, successfully labeling a file with a bad label could cause issues during policy development in permissive. Instead, as each context is used, verify it is valid before blindly applying the label. If an error with validation occurs in restorecon, application of remaining valid labels will be uninterrupted as before. Signed-off-by: Yuli Khodorkovskiy <ykhodo@gmail.com> |
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|---|---|---|
| checkpolicy | ||
| dbus | ||
| gui | ||
| libselinux | ||
| libsemanage | ||
| libsepol | ||
| mcstrans | ||
| policycoreutils | ||
| python | ||
| restorecond | ||
| sandbox | ||
| scripts | ||
| secilc | ||
| semodule-utils | ||
| .gitignore | ||
| .travis.yml | ||
| CleanSpec.mk | ||
| Makefile | ||
| README | ||
Please submit all bug reports and patches to selinux@tycho.nsa.gov. Subscribe via selinux-join@tycho.nsa.gov. Build dependencies on Fedora: yum install audit-libs-devel bison bzip2-devel dbus-devel dbus-glib-devel flex flex-devel flex-static glib2-devel libcap-devel libcap-ng-devel pam-devel pcre-devel python-devel setools-devel swig xmlto redhat-rpm-config To build and install everything under a private directory, run: make DESTDIR=~/obj install install-pywrap To install as the default system libraries and binaries (overwriting any previously installed ones - dangerous!), on x86_64, run: make LIBDIR=/usr/lib64 SHLIBDIR=/lib64 install install-pywrap relabel or on x86 (32-bit), run: make install install-pywrap relabel This may render your system unusable if the upstream SELinux userspace lacks library functions or other dependencies relied upon by your distribution. If it breaks, you get to keep both pieces. To install libsepol on macOS (mainly for policy analysis): cd libsepol; make PREFIX=/usr/local install This requires GNU coreutils (brew install coreutils).