[cip-dev] [cip-core:deby 2/3] security-configuration: apply security polcies using package bbappend

["Venkata Pyla" <venkata.pyla@toshiba-tsip.com>]

[-- Attachment #1: Type: text/plain, Size: 5974 bytes --]

From: venkata pyla <venkata.pyla@toshiba-tsip.com>

add package bbappaned files in the security layer that will apply
the security configurations like
    e.g: Set password strength in pam configurations
         Set audit failure actions in audit package configurations
         etc.

Signed-off-by: venkata pyla <venkata.pyla@toshiba-tsip.com>
---
 .../audit/audit_debian.bbappend               | 20 ++++++++++
 .../base-files/base-files_debian.bbappend     |  3 ++
 .../openssh/openssh_debian.bbappend           | 19 +++++++++
 .../recipes-debian/pam/libpam_debian.bbappend | 39 +++++++++++++++++++
 4 files changed, 81 insertions(+)
 create mode 100644 meta-cip-security/recipes-debian/audit/audit_debian.bbappend
 create mode 100644 meta-cip-security/recipes-debian/base-files/base-files_debian.bbappend
 create mode 100644 meta-cip-security/recipes-debian/openssh/openssh_debian.bbappend
 create mode 100644 meta-cip-security/recipes-debian/pam/libpam_debian.bbappend

diff --git a/meta-cip-security/recipes-debian/audit/audit_debian.bbappend b/meta-cip-security/recipes-debian/audit/audit_debian.bbappend
new file mode 100644
index 0000000..c148f27
--- /dev/null
+++ b/meta-cip-security/recipes-debian/audit/audit_debian.bbappend
@@ -0,0 +1,20 @@
+#
+# CIP Security, tiny profile
+#
+# Copyright (c) Toshiba Corporation, 2020
+#
+# SPDX-License-Identifier: MIT
+#
+
+DESCRIPTION = "CIP Security customizations"
+
+pkg_postinst_audit_append() {
+	# CR2.9: Audit storage capacity
+	# CR2.9 RE-1: Warn when audit record storage capacity threshold reached
+	AUDIT_CONF_FILE="$D${sysconfdir}/audit/auditd.conf"
+	sed -i 's/space_left_action = .*/space_left_action = SYSLOG/'  $AUDIT_CONF_FILE
+	sed -i 's/admin_space_left_action = .*/admin_space_left_action = SYSLOG/' $AUDIT_CONF_FILE
+
+	# CR2.10: Response to audit processing failures
+	sed -i 's/disk_error_action = .*/disk_error_action = SYSLOG/' $AUDIT_CONF_FILE
+}
diff --git a/meta-cip-security/recipes-debian/base-files/base-files_debian.bbappend b/meta-cip-security/recipes-debian/base-files/base-files_debian.bbappend
new file mode 100644
index 0000000..895dc9f
--- /dev/null
+++ b/meta-cip-security/recipes-debian/base-files/base-files_debian.bbappend
@@ -0,0 +1,3 @@
+do_install_append() {
+	echo "${MACHINE}" > ${D}${sysconfdir}/hostname
+}
diff --git a/meta-cip-security/recipes-debian/openssh/openssh_debian.bbappend b/meta-cip-security/recipes-debian/openssh/openssh_debian.bbappend
new file mode 100644
index 0000000..ddd2bfc
--- /dev/null
+++ b/meta-cip-security/recipes-debian/openssh/openssh_debian.bbappend
@@ -0,0 +1,19 @@
+#
+# CIP Security, tiny profile
+#
+# Copyright (c) Toshiba Corporation, 2020
+#
+# SPDX-License-Identifier: MIT
+#
+
+DESCRIPTION = "CIP Security customizations"
+
+pkg_postinst_${PN}_append() {
+	# CR2.6: Remote session termination
+	# Terminate remote session after inactive time period
+	SSHD_CONFIG="$D${sysconfdir}/ssh/sshd_config"
+	alive_interval=$(sed -n '/ClientAliveInterval/p' "${SSHD_CONFIG}")
+	alive_countmax=$(sed -n '/ClientAliveCountMax/p' "${SSHD_CONFIG}")
+	sed -i "/${alive_interval}/c ClientAliveInterval 120"  "${SSHD_CONFIG}"
+	sed -i "/${alive_countmax}/c ClientAliveCountMax 0" "${SSHD_CONFIG}"
+}
diff --git a/meta-cip-security/recipes-debian/pam/libpam_debian.bbappend b/meta-cip-security/recipes-debian/pam/libpam_debian.bbappend
new file mode 100644
index 0000000..c9c1605
--- /dev/null
+++ b/meta-cip-security/recipes-debian/pam/libpam_debian.bbappend
@@ -0,0 +1,39 @@
+#
+# CIP Security, tiny profile
+#
+# Copyright (c) Toshiba Corporation, 2020
+#
+# SPDX-License-Identifier: MIT
+#
+
+DESCRIPTION = "CIP Security customizations"
+
+pkg_postinst_pam-plugin-cracklib_append() {
+	# CR1.7: Strength of password-based authentication
+	# Pam configuration to  enforce password strength
+	PAM_PWD_FILE="$D${sysconfdir}/pam.d/common-password"
+	CRACKLIB_CONFIG="password  requisite    pam_cracklib.so retry=3 minlen=8 maxrepeat=3 ucredit=-1 lcredit=-1 dcredit=-1 ocredit=-1 difok=3 gecoscheck=1 reject_username enforce_for_root"
+	if grep -c "pam_cracklib.so" "${PAM_PWD_FILE}";then
+		sed -i '/pam_cracklib.so/ s/^#*/#/'  "${PAM_PWD_FILE}"
+	fi
+	sed -i "0,/^password.*/s/^password.*/${CRACKLIB_CONFIG}\n&/" "${PAM_PWD_FILE}"
+}
+
+pkg_postinst_pam-plugin-tally2_append() {
+	# CR1.11: Unsuccessful login attempts
+	# Lock user account after unsuccessful login attempts
+	PAM_AUTH_FILE="$D${sysconfdir}/pam.d/common-auth"
+	pam_tally="auth   required  pam_tally2.so  deny=3 even_deny_root unlock_time=60 root_unlock_time=60"
+	if grep -c "pam_tally2.so" "${PAM_AUTH_FILE}";then
+        	sed -i '/pam_tally2/ s/^#*/#/'  "${PAM_AUTH_FILE}"
+	fi
+	sed -i "0,/^auth.*/s/^auth.*/${pam_tally}\n&/" "${PAM_AUTH_FILE}"
+}
+
+
+pkg_postinst_libpam_append() {
+	# CR2.7: Concurrent session control
+	# Limit the concurrent login sessions
+	LIMITS_CONFIG="$D${sysconfdir}/security/limits.conf"
+	echo "* hard maxlogins 2" >> ${LIMITS_CONFIG}
+}
-- 
2.27.0.windows.1

The information contained in this e-mail message and in any
attachments/annexure/appendices is confidential to the 
recipient and may contain privileged information. 
If you are not the intended recipient, please notify the
sender and delete the message along with any 
attachments/annexure/appendices. You should not disclose,
copy or otherwise use the information contained in the
message or any annexure. Any views expressed in this e-mail 
are those of the individual sender except where the sender 
specifically states them to be the views of 
Toshiba Software India Pvt. Ltd. (TSIP),Bangalore.

Although this transmission and any attachments are believed to be
free of any virus or other defect that might affect any computer 
system into which it is received and opened, it is the responsibility
of the recipient to ensure that it is virus free and no responsibility 
is accepted by Toshiba Embedded Software India Pvt. Ltd, for any loss or
damage arising in any way from its use.


[-- Attachment #2: Type: text/plain, Size: 419 bytes --]

-=-=-=-=-=-=-=-=-=-=-=-
Links: You receive all messages sent to this group.

View/Reply Online (#5454): https://lists.cip-project.org/g/cip-dev/message/5454
Mute This Topic: https://lists.cip-project.org/mt/76865928/4520388
Group Owner: cip-dev+owner@lists.cip-project.org
Unsubscribe: https://lists.cip-project.org/g/cip-dev/leave/8129055/727948398/xyzzy  [cip-dev@archiver.kernel.org]
-=-=-=-=-=-=-=-=-=-=-=-