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Tue, 15 Jan 2019 03:20:32 +0000 From: "Sugar, David" To: "selinux-refpolicy@vger.kernel.org" Subject: [PATCH 2/2 v2] Modify type for /etc/hostname Thread-Topic: [PATCH 2/2 v2] Modify type for /etc/hostname Thread-Index: AQHUrIFENfH/RtGuVEekLJ576jNsyw== Date: Tue, 15 Jan 2019 03:20:29 +0000 Message-ID: <20190115032018.28662-4-dsugar@tresys.com> References: <20190115032018.28662-1-dsugar@tresys.com> In-Reply-To: <20190115032018.28662-1-dsugar@tresys.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [73.180.141.176] x-clientproxiedby: BL0PR02CA0009.namprd02.prod.outlook.com (2603:10b6:207:3c::22) To BN6PR15MB1507.namprd15.prod.outlook.com (2603:10b6:404:c6::19) authentication-results: spf=none (sender IP is ) smtp.mailfrom=dsugar@tresys.com; x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.20.1 x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;BN6PR15MB1156;6:JM2zYlxEdbatNyisAMTGofNk/MMz9w2Z6b/qQQBSUFT7srf2OLfUVAbq3WqncnUg3D6ePN8iH+zJtrI/4L3RDSfzkUutPP11etqJpGpg1Mcn5lFc7nt+M7/lqpWZpHQwtgMbMmIjJnxa9+p+ZvV66q9uNq54WG6lI/F7rmVjFMcfH7ouwltkECOAXEFMtFO+W1QJji9M2lY0JFY1xtlOruBBOSNsQu3LaEXHJg27pNZG0AwKSQtJUmfhvauFFxIJNbHouHhqxz6Wk/0StIeAdT9r6N/tL0ACpYfP/IYXk7+Uz7xaSf0n6epKpwopoU5O25cpp/yM9MnPR149Yt5eHuZgnl5bKi8Q99J5Y47be3joIGJ3x8ACmoM8FoSrDdoupVighr4GBzBlDLEiJpqlz3vs0SEZwn1LDdhODQuHk2Ld0qC0obQgpcF0ioItvk5Dxsvj3gibOJjurMfHgCnxRg==;5:rnzgA7BQiqRl/UAcx8oM9LfajerD5qiiVt/gzXwNTYqZZb8ripo2a/fbLXBGaT8F5rqoBTtkdQ446o1vZjGiM7TKmUehZJGhuRNkWR+iumwU7b8EGi7Gs4HlmtCsWDqejDU/YXG/8AnYlNYWGZjxFhEhmsNp5F4/vIfuL6dQe2X+QqgCcrqxHScsaw/Uor0i1dIWgg8yaANIiEBW++DwVw==;7:fJnTmAT0XCugrMY77A+bS83ct7e28sZSNH9g8+Gw2bbcAEn4IgWX8/ZKKZl/8MCEzdpC57GiB0wXiPoyOg8+5YvtSlbBY4w1xq164FJL//I5uWRXz2EpeoHAQtCn1g3TFBcO8XbP3F3d1pQrcYIDEQ== x-ms-office365-filtering-correlation-id: 4de46e66-d8d9-4c2e-8743-08d67a98667c x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(7021145)(8989299)(4534185)(7022145)(7094020)(4603075)(4627221)(201702281549075)(8990200)(7048125)(7027125)(7023125)(5600109)(711020)(2017052603328)(7153060)(7193020);SRVR:BN6PR15MB1156; 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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: tresys.com X-MS-Exchange-CrossTenant-Network-Message-Id: 4de46e66-d8d9-4c2e-8743-08d67a98667c X-MS-Exchange-CrossTenant-originalarrivaltime: 15 Jan 2019 03:20:29.1938 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: a0d45667-6c07-4e88-868f-4ac9af95c7ed X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR15MB1156 Sender: selinux-refpolicy-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: selinux-refpolicy@vger.kernel.org hostnamectl updates /etc/hostname This change is setting the type for the file /etc/hostname to=20 net_conf_t and granting hostnamectl permission to edit this file. Note that hostnamectl is initially creating a new file .#hostname* which is why the create permissions are requied. type=3DAVC msg=3Daudit(1547039052.041:563): avc: denied { write } for pi= d=3D7564 comm=3D"systemd-hostnam" name=3D"etc" dev=3D"dm-1" ino=3D101 scont= ext=3Dsystem_u:system_r:systemd_hostnamed_t:s0 tcontext=3Dsystem_u:object_r= :etc_t:s0 tclass=3Ddir permissive=3D1 type=3DAVC msg=3Daudit(1547039052.041:563): avc: denied { add_name } for = pid=3D7564 comm=3D"systemd-hostnam" name=3D".#hostnamezyqZ9t" scontext=3Ds= ystem_u:system_r:systemd_hostnamed_t:s0 tcontext=3Dsystem_u:object_r:etc_t:= s0 tclass=3Ddir permissive=3D1 type=3DAVC msg=3Daudit(1547039052.041:563): avc: denied { create } for p= id=3D7564 comm=3D"systemd-hostnam" name=3D".#hostnamezyqZ9t" scontext=3Dsys= tem_u:system_r:systemd_hostnamed_t:s0 tcontext=3Dsystem_u:object_r:etc_t:s0= tclass=3Dfile permissive=3D1 type=3DAVC msg=3Daudit(1547039052.041:563): avc: denied { write } for pi= d=3D7564 comm=3D"systemd-hostnam" path=3D"/etc/.#hostnamezyqZ9t" dev=3D"dm-= 1" ino=3D1094726 scontext=3Dsystem_u:system_r:systemd_hostnamed_t:s0 tconte= xt=3Dsystem_u:object_r:etc_t:s0 tclass=3Dfile permissive=3D1 type=3DSYSCALL msg=3Daudit(1547039052.041:563): arch=3Dc000003e syscall=3D2= success=3Dyes exit=3D8 a0=3D560d0bba34b0 a1=3D800c2 a2=3D180 a3=3D5c35f14c= items=3D2 ppid=3D1 pid=3D7564 auid=3D4294967295 uid=3D0 gid=3D0 euid=3D0 s= uid=3D0 fsuid=3D0 egid=3D0 sgid=3D0 fsgid=3D0 tty=3D(none) ses=3D4294967295= comm=3D"systemd-hostnam" exe=3D"/usr/lib/systemd/systemd-hostnamed" subj= =3Dsystem_u:system_r:systemd_hostnamed_t:s0 key=3D(null) type=3DAVC msg=3Daudit(1547039052.041:564): avc: denied { setattr } for = pid=3D7564 comm=3D"systemd-hostnam" name=3D".#hostnamezyqZ9t" dev=3D"dm-1" = ino=3D1094726 scontext=3Dsystem_u:system_r:systemd_hostnamed_t:s0 tcontext= =3Dsystem_u:object_r:etc_t:s0 tclass=3Dfile permissive=3D1 type=3DSYSCALL msg=3Daudit(1547039052.041:564): arch=3Dc000003e syscall=3D9= 1 success=3Dyes exit=3D0 a0=3D8 a1=3D1a4 a2=3Dfbad2484 a3=3D24 items=3D1 pp= id=3D1 pid=3D7564 auid=3D4294967295 uid=3D0 gid=3D0 euid=3D0 suid=3D0 fsuid= =3D0 egid=3D0 sgid=3D0 fsgid=3D0 tty=3D(none) ses=3D4294967295 comm=3D"syst= emd-hostnam" exe=3D"/usr/lib/systemd/systemd-hostnamed" subj=3Dsystem_u:sys= tem_r:systemd_hostnamed_t:s0 key=3D(null) type=3DAVC msg=3Daudit(1547039052.041:565): avc: denied { remove_name } f= or pid=3D7564 comm=3D"systemd-hostnam" name=3D".#hostnamezyqZ9t" dev=3D"dm= -1" ino=3D1094726 scontext=3Dsystem_u:system_r:systemd_hostnamed_t:s0 tcont= ext=3Dsystem_u:object_r:etc_t:s0 tclass=3Ddir permissive=3D1 type=3DAVC msg=3Daudit(1547039052.041:565): avc: denied { rename } for p= id=3D7564 comm=3D"systemd-hostnam" name=3D".#hostnamezyqZ9t" dev=3D"dm-1" i= no=3D1094726 scontext=3Dsystem_u:system_r:systemd_hostnamed_t:s0 tcontext= =3Dsystem_u:object_r:etc_t:s0 tclass=3Dfile permissive=3D1 type=3DAVC msg=3Daudit(1547039052.041:565): avc: denied { unlink } for p= id=3D7564 comm=3D"systemd-hostnam" name=3D"hostname" dev=3D"dm-1" ino=3D109= 4712 scontext=3Dsystem_u:system_r:systemd_hostnamed_t:s0 tcontext=3Dsystem_= u:object_r:etc_t:s0 tclass=3Dfile permissive=3D1 Signed-off-by: Dave Sugar --- policy/modules/system/sysnetwork.fc | 1 + policy/modules/system/systemd.te | 3 +++ 2 files changed, 4 insertions(+) diff --git a/policy/modules/system/sysnetwork.fc b/policy/modules/system/sy= snetwork.fc index cd528938..1e5432a4 100644 --- a/policy/modules/system/sysnetwork.fc +++ b/policy/modules/system/sysnetwork.fc @@ -18,6 +18,7 @@ ifdef(`distro_debian',` /etc/hosts -- gen_context(system_u:object_r:net_conf_t,s0) /etc/hosts\.allow.* -- gen_context(system_u:object_r:net_conf_t,s0) /etc/hosts\.deny.* -- gen_context(system_u:object_r:net_conf_t,s0) +/etc/hostname -- gen_context(system_u:object_r:net_conf_t,s0) /etc/denyhosts.* -- gen_context(system_u:object_r:net_conf_t,s0) /etc/resolv\.conf.* -- gen_context(system_u:object_r:net_conf_t,s0) /etc/yp\.conf.* -- gen_context(system_u:object_r:net_conf_t,s0) diff --git a/policy/modules/system/systemd.te b/policy/modules/system/syste= md.te index abcc52f5..75ee4310 100644 --- a/policy/modules/system/systemd.te +++ b/policy/modules/system/systemd.te @@ -325,6 +325,9 @@ files_read_etc_files(systemd_hostnamed_t) =20 seutil_read_file_contexts(systemd_hostnamed_t) =20 +sysnet_etc_filetrans_config(systemd_hostnamed_t) +sysnet_manage_config(systemd_hostnamed_t) + systemd_log_parse_environment(systemd_hostnamed_t) =20 optional_policy(` --=20 2.20.1