scap-security-guide December 2013

scap-security-guide@lists.fedorahosted.org

32 participants
116 discussions

FW: [PATCH] New Rule for RHEL-06-000029 -- Lock non-root system accounts
by Steinke, Leland J Sr CTR DISA DD (US) 25 Apr '14

25 Apr '14

The updates validated with OSCAP, but the verify-references.py script spat it up. It looks good to me, otherwise. Thanks, Leland -- Leland Steinke, Security+ DISA FSO Technical Support Contractor tapestry technologies, Inc 717-267-5797 (DSN 570) leland.j.steinke.ctr(a)mail.mil (gov't) lsteinke(a)tapestrytech.com (com'l)

4 9

[PATCH] correct several STIG/SSG mappings
by Steinke, Leland J Sr CTR DISA DD (US) 25 Apr '14

25 Apr '14

These are corrections to several mappings in stig_overlay.xml. Thanks, Leland -- Leland Steinke, Security+ DISA FSO Technical Support Contractor tapestry technologies, Inc 717-267-5797 (DSN 570) leland.j.steinke.ctr(a)mail.mil (gov't) lsteinke(a)tapestrytech.com (com'l) --- RHEL6/input/auxiliary/stig_overlay.xml | 14 +++++++------- 1 files changed, 7 insertions(+), 7 deletions(-) diff --git a/RHEL6/input/auxiliary/stig_overlay.xml b/RHEL6/input/auxiliary/stig_overlay.xml index 9b613eb..8e89373 100644 --- a/RHEL6/input/auxiliary/stig_overlay.xml +++ b/RHEL6/input/auxiliary/stig_overlay.xml @@ -66,7 +66,7 @@ <overlay owner="disastig" ruleid="no_hashes_outside_shadow" ownerid="RHEL-06-000031" disa="366" severity="medium"> <title>The /etc/passwd file must not contain password hashes.</title> </overlay> - <overlay owner="disastig" ruleid="no_uidzero_except_root" ownerid="RHEL-06-000032" disa="366" severity="medium"> + <overlay owner="disastig" ruleid="accounts_no_uid_except_zero" ownerid="RHEL-06-000032" disa="366" severity="medium"> <title>The root account must be the only account having a UID of 0.</title> </overlay> <overlay owner="disastig" ruleid="userowner_shadow_file" ownerid="RHEL-06-000033" disa="366" severity="medium"> @@ -234,7 +234,7 @@ <overlay owner="disastig" ruleid="kernel_module_ipv6_option_disabled" ownerid="RHEL-06-000098" disa="366" severity="medium"> <title>The IPv6 protocol handler must not be bound to the network stack unless needed.</title> </overlay> - <overlay owner="disastig" ruleid="sysctl_net_ipv6_conf_default_accept_redirects_value" ownerid="RHEL-06-000099" disa="366" severity="medium"> + <overlay owner="disastig" ruleid="sysctl_ipv6_default_accept_redirects" ownerid="RHEL-06-000099" disa="366" severity="medium"> <title>The system must ignore ICMPv6 redirects by default.</title> </overlay> <overlay owner="disastig" ruleid="service_ip6tables_enabled" ownerid="RHEL-06-000103" disa="1118" severity="medium"> @@ -351,7 +351,7 @@ <overlay owner="disastig" ruleid="configure_auditd_max_log_file_action" ownerid="RHEL-06-000161" disa="366" severity="medium"> <title>The system must rotate audit log files that reach the maximum file size.</title> </overlay> - <overlay owner="disastig" ruleid="configure_auditd_admin_space_left_action" ownerid="RHEL-06-000163" disa="1343" severity="medium"> + <overlay owner="disastig" ruleid="nonselected" ownerid="RHEL-06-000163" disa="1343" severity="medium"> <title>The audit system must switch the system to single-user mode when available audit storage volume becomes dangerously low.</title> </overlay> <overlay owner="disastig" ruleid="audit_rules_time_adjtimex" ownerid="RHEL-06-000165" disa="169" severity="low"> @@ -747,16 +747,16 @@ <overlay owner="disastig" ruleid="snmpd_not_default_password" ownerid="RHEL-06-000341" disa="366" severity="high"> <title>The snmpd service must not use a default password.</title> </overlay> - <overlay owner="disastig" ruleid="user_umask_bashrc" ownerid="RHEL-06-000342" disa="366" severity="low"> + <overlay owner="disastig" ruleid="accounts_umask_bashrc" ownerid="RHEL-06-000342" disa="366" severity="low"> <title>The system default umask for the bash shell must be 077.</title> </overlay> - <overlay owner="disastig" ruleid="user_umask_cshrc" ownerid="RHEL-06-000343" disa="366" severity="low"> + <overlay owner="disastig" ruleid="accounts_umask_cshrc" ownerid="RHEL-06-000343" disa="366" severity="low"> <title>The system default umask for the csh shell must be 077.</title> </overlay> - <overlay owner="disastig" ruleid="user_umask_profile" ownerid="RHEL-06-000344" disa="366" severity="low"> + <overlay owner="disastig" ruleid="accounts_umask_etc_profile" ownerid="RHEL-06-000344" disa="366" severity="low"> <title>The system default umask in /etc/profile must be 077.</title> </overlay> - <overlay owner="disastig" ruleid="user_umask_logindefs" ownerid="RHEL-06-000345" disa="366" severity="low"> + <overlay owner="disastig" ruleid="accounts_umask_login_defs" ownerid="RHEL-06-000345" disa="366" severity="low"> <title>The system default umask in /etc/login.defs must be 077.</title> </overlay> <overlay owner="disastig" ruleid="umask_for_daemons" ownerid="RHEL-06-000346" disa="366" severity="low"> -- 1.7.1

3 6

fix CCE-27032-2 no_files_unowned_by_user.xml
by Mercer, Rodney 22 Jan '14

22 Jan '14

Based on comments and recommendations from the following thread, I've submitted a patch to fix CCE-27032-2 no_files_unowned_by_user.xml https://lists.fedorahosted.org/pipermail/scap-security-guide/2013-July/0036… This only checks /etc/passwd and not any other authorization databases. 8<==================== >From ab80797697bdf00c5e05caf150124df67e0a9a51 Mon Sep 17 00:00:00 2001 From: Rodney Mercer <rmercer(a)harris.com> Date: Wed, 18 Dec 2013 15:01:25 +0000 Subject: [PATCH] Modified no_files_unowned_by_user.xml modified completely broken no_files_unowned_by_user.xml to properly check all files on the system to make sure that they are owned by a user that resides in /etc/passwd. --- RHEL6/input/checks/no_files_unowned_by_user.xml | 51 ++++++++++++---------- 1 files changed, 28 insertions(+), 23 deletions(-) diff --git a/RHEL6/input/checks/no_files_unowned_by_user.xml b/RHEL6/input/checks/no_files_unowned_by_user.xml index a73183a..f3f1276 100644 --- a/RHEL6/input/checks/no_files_unowned_by_user.xml +++ b/RHEL6/input/checks/no_files_unowned_by_user.xml @@ -1,38 +1,43 @@ <def-group> - <definition class="compliance" - id="no_files_unowned_by_user" version="1"> + <definition class="compliance" id="no_files_unowned_by_user" version="1"> <metadata> <title>Find files unowned by a user</title> <affected family="unix"> <platform>Red Hat Enterprise Linux 6</platform> </affected> - <description>All files should be owned by a - user</description> + <description>All files should be owned by a user</description> + <reference source="rmercer" ref_id="20131218" ref_url="test_attestation" /> </metadata> <criteria> - <criterion comment="Check all files and make sure they are owned by a user" - negate="true" - test_ref="test_20050" /> + <criterion comment="Check all files and make sure they are owned by a user" test_ref="no_files_unowned_by_user_test" /> </criteria> </definition> - <unix:file_test xmlns:unix="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" - check="all" comment="files with no user owner" - id="test_20050" version="1"> - <notes> - <note>This will enumerate all files on local - partitions</note> - </notes> - <unix:object object_ref="obj_20022" /> - <unix:state state_ref="state_20050" /> - </unix:file_test> - <unix:file_state comment="Executables with suid set" - id="state_20050" version="1"> - <unix:user_id datatype="int">0</unix:user_id> + + <unix:file_state id="file_permissions_unowned_userid_list_match" version="1"> + <unix:user_id var_check="at least one" var_ref="file_permissions_unowned_userid_list" datatype="int" /> </unix:file_state> - <unix:file_object comment="all local files" - id="obj_20022" version="1"> - <unix:behaviors recurse="symlinks and directories" recurse_file_system="local" /> + + <local_variable id="file_permissions_unowned_userid_list" comment="List of valid user ids" datatype="int" version="1"> + <object_component item_field="subexpression" object_ref="file_permissions_unowned_userid_list_object" /> + </local_variable> + + <ind:textfilecontent54_object id="file_permissions_unowned_userid_list_object" version="1"> + <ind:filepath>/etc/passwd</ind:filepath> + <ind:pattern operation="pattern match">^[^:]+:[^:]+:([\d]+):[\d]+:[^:]*:[^:]+:[^:]*$</ind:pattern> + <ind:instance operation="greater than or equal" datatype="int">1</ind:instance> + </ind:textfilecontent54_object> + + <unix:file_object comment="all local files" id="file_permissions_unowned_object" version="1"> + <unix:behaviors recurse="symlinks and directories" recurse_direction="down" recurse_file_system="local" /> <unix:path>/</unix:path> <unix:filename operation="pattern match">.*</unix:filename> + <filter action="exclude">file_permissions_unowned_userid_list_match</filter> </unix:file_object> + + <unix:file_test xmlns:unix="http://oval.mitre.org/XMLSchema/oval-definitions-5#unix" + check="all" check_existence="none_exist" comment="Check user ids on all files on the system" + id="no_files_unowned_by_user_test" version="1"> + <unix:object object_ref="file_permissions_unowned_object" /> + </unix:file_test> </def-group> + -- 1.7.1

2 1

[PATCH] Initial GConf2 fixups
by Maura Dailey 06 Jan '14

06 Jan '14

Several of the GConf checks were using xmlfilecontent, which I liked, so I changed the ones that weren't to use it. However, the checks that had been using xmlfilecontent were improperly pointing to /etc/gconf/gconf.xml.defaults, when we wanted to be peering into gconf.xml.mandatory instead (this is where the gconf2-tool instructions were writing their values). To add support to ensure these checks will no longer report a failure on machines that aren't using X, I added an extended definition check and the appropriate package checks to point to the lowest level package that installs GConf settings, namely the GConf2 package. On servers that don't have this package installed, the check will pass. - Maura Dailey Maura Dailey (1): Rewrote various GConf checks to standardize on xmlfilecontent tests and ensured they were actually checking the correct location (gconf.xml.mandatory, not gconf.xml.defaults). .../input/checks/gconf_gnome_disable_automount.xml | 59 +++++++++++--------- .../checks/gconf_gnome_disable_thumbnailers.xml | 34 ++++++----- ...f_gnome_screensaver_idle_activation_enabled.xml | 19 ++++-- .../checks/gconf_gnome_screensaver_idle_delay.xml | 24 +++++--- .../gconf_gnome_screensaver_lock_enabled.xml | 14 +++-- .../checks/gconf_gnome_screensaver_mode_blank.xml | 12 +++- RHEL6/input/checks/package_GConf2_installed.xml | 26 +++++++++ .../input/checks/templates/packages_installed.csv | 1 + RHEL6/input/fixes/bash/package_GConf2_installed.sh | 1 + 9 files changed, 124 insertions(+), 66 deletions(-) create mode 100644 RHEL6/input/checks/package_GConf2_installed.xml create mode 100644 RHEL6/input/fixes/bash/package_GConf2_installed.sh

6 19

[PATCH 31/31] Updating RHEL7 CCP profile
by Shawn Wells 27 Dec '13

27 Dec '13

1 0

[PATCH 30/31] Renamed enable_randomize_va_space to
by Shawn Wells 27 Dec '13

27 Dec '13

1 0

[PATCH 29/31] Renamed XCCDF audit_logs_permissions to
by Shawn Wells 27 Dec '13

27 Dec '13

1 0

[PATCH 28/31] Linked shared/file_ownership_binary_dirs -> RHEL6 & 7
by Shawn Wells 27 Dec '13

27 Dec '13

1 0

[PATCH 27/31] shared/file_permissions_binary_dirs --> RHEL6 & RHEL7
by Shawn Wells 27 Dec '13

27 Dec '13

1 0

[PATCH 26/31] Linked shared/file_ownership_library_dirs to RHEL6 &
by Shawn Wells 27 Dec '13

27 Dec '13

1 0

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scap-security-guide December 2013