26ac1d5db9
Fixes a local privilege escalation using polkit_system_bus_name_get_creds_sync() Fixes: CVE-2021-3560
128 lines
5.1 KiB
Nix
128 lines
5.1 KiB
Nix
{ lib, stdenv, fetchurl, pkg-config, glib, expat, pam, perl, fetchpatch
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, intltool, spidermonkey_78, gobject-introspection, libxslt, docbook_xsl, dbus
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, docbook_xml_dtd_412, gtk-doc, coreutils
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, useSystemd ? (stdenv.isLinux && !stdenv.hostPlatform.isMusl), systemd, elogind
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# needed until gobject-introspection does cross-compile (https://github.com/NixOS/nixpkgs/pull/88222)
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, withIntrospection ? (stdenv.buildPlatform == stdenv.hostPlatform)
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# A few tests currently fail on musl (polkitunixusertest, polkitunixgrouptest, polkitidentitytest segfault).
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# Not yet investigated; it may be due to the "Make netgroup support optional"
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# patch not updating the tests correctly yet, or doing something wrong,
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# or being unrelated to that.
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, doCheck ? (stdenv.isLinux && !stdenv.hostPlatform.isMusl)
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}:
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let
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system = "/run/current-system/sw";
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setuid = "/run/wrappers/bin";
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in
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stdenv.mkDerivation rec {
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pname = "polkit";
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version = "0.118";
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src = fetchurl {
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url = "https://www.freedesktop.org/software/${pname}/releases/${pname}-${version}.tar.gz";
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sha256 = "0swmg37jsxsxfsd2b3qm0l3zxr9ldvhpjw8lsgq3j8q7wy2fjm3d";
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};
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patches = [
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# Don't use etc/dbus-1/system.d
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# Upstream MR: https://gitlab.freedesktop.org/polkit/polkit/merge_requests/11
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(fetchpatch {
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url = "https://gitlab.freedesktop.org/polkit/polkit/commit/5dd4e22efd05d55833c4634b56e473812b5acbf2.patch";
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sha256 = "17lv7xj5ksa27iv4zpm4zwd4iy8zbwjj4ximslfq3sasiz9kxhlp";
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})
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(fetchpatch {
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# https://www.openwall.com/lists/oss-security/2021/06/03/1
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# https://gitlab.freedesktop.org/polkit/polkit/-/merge_requests/79
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name = "CVE-2021-3560.patch";
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url = "https://gitlab.freedesktop.org/polkit/polkit/-/commit/a04d13affe0fa53ff618e07aa8f57f4c0e3b9b81.patch";
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sha256 = "157ddsizgr290jsb8fpafrc37gc1qw5pdvl351vnn3pzhqs7n6f4";
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})
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] ++ lib.optionals stdenv.hostPlatform.isMusl [
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# Make netgroup support optional (musl does not have it)
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# Upstream MR: https://gitlab.freedesktop.org/polkit/polkit/merge_requests/10
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# We use the version of the patch that Alpine uses successfully.
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(fetchpatch {
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name = "make-innetgr-optional.patch";
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url = "https://git.alpinelinux.org/aports/plain/main/polkit/make-innetgr-optional.patch?id=391e7de6ced1a96c2dac812e0b12f1d7e0ea705e";
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sha256 = "1p9qqqhnrfyjvvd50qh6vpl256kyfblm1qnhz5pm09klrl1bh1n4";
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})
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];
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postPatch = lib.optionalString stdenv.isDarwin ''
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sed -i -e "s/-Wl,--as-needed//" configure.ac
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'';
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outputs = [ "bin" "dev" "out" ]; # small man pages in $bin
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nativeBuildInputs =
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[ glib gtk-doc pkg-config intltool perl ]
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++ [ libxslt docbook_xsl docbook_xml_dtd_412 ]; # man pages
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buildInputs =
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[ expat pam spidermonkey_78 ]
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# On Linux, fall back to elogind when systemd support is off.
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++ lib.optional stdenv.isLinux (if useSystemd then systemd else elogind)
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++ lib.optional withIntrospection gobject-introspection;
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propagatedBuildInputs = [
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glib # in .pc Requires
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];
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preConfigure = ''
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chmod +x test/mocklibc/bin/mocklibc{,-test}.in
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patchShebangs .
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# ‘libpolkit-agent-1.so’ should call the setuid wrapper on
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# NixOS. Hard-coding the path is kinda ugly. Maybe we can just
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# call through $PATH, but that might have security implications.
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substituteInPlace src/polkitagent/polkitagentsession.c \
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--replace 'PACKAGE_PREFIX "/lib/polkit-1/' '"${setuid}/'
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substituteInPlace test/data/etc/polkit-1/rules.d/10-testing.rules \
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--replace /bin/true ${coreutils}/bin/true \
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--replace /bin/false ${coreutils}/bin/false
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'' + lib.optionalString useSystemd /* bogus chroot detection */ ''
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sed '/libsystemd autoconfigured/s/.*/:/' -i configure
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'';
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configureFlags = [
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"--datadir=${system}/share"
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"--sysconfdir=/etc"
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"--with-systemdsystemunitdir=${placeholder "out"}/etc/systemd/system"
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"--with-polkitd-user=polkituser" #TODO? <nixos> config.ids.uids.polkituser
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"--with-os-type=NixOS" # not recognized but prevents impurities on non-NixOS
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(if withIntrospection then "--enable-introspection" else "--disable-introspection")
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] ++ lib.optional (!doCheck) "--disable-test";
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makeFlags = [
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"INTROSPECTION_GIRDIR=${placeholder "out"}/share/gir-1.0"
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"INTROSPECTION_TYPELIBDIR=${placeholder "out"}/lib/girepository-1.0"
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];
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installFlags = [
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"datadir=${placeholder "out"}/share"
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"sysconfdir=${placeholder "out"}/etc"
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];
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inherit doCheck;
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checkInputs = [ dbus ];
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checkPhase = ''
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# unfortunately this test needs python-dbusmock, but python-dbusmock needs polkit,
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# leading to a circular dependency
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substituteInPlace test/Makefile --replace polkitbackend ""
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# tests need access to the system bus
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dbus-run-session --config-file=${./system_bus.conf} -- sh -c 'DBUS_SYSTEM_BUS_ADDRESS=$DBUS_SESSION_BUS_ADDRESS make check'
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'';
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meta = with lib; {
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homepage = "http://www.freedesktop.org/wiki/Software/polkit";
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description = "A toolkit for defining and handling the policy that allows unprivileged processes to speak to privileged processes";
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license = licenses.gpl2;
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platforms = platforms.unix;
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maintainers = teams.freedesktop.members ++ (with maintainers; [ ]);
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};
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}
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