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openwrtv4/package/network/services/dnsmasq/Makefile
Kevin Darbyshire-Bryant a3198061f8 dnsmasq: backport dnssec security fix 
CVE-2017-15107

An interesting problem has turned up in DNSSEC validation. It turns out
that NSEC records expanded from wildcards are allowed, so a domain can
include an NSEC record for *.example.org and an actual query reply could
expand that to anything in example.org  and still have it signed by the
signature for the wildcard. So, for example

!.example.org NSEC zz.example.org

is fine.

The problem is that most implementers (your author included, but also
the Google public DNS people, powerdns and Unbound) then took that
record to prove the nothing exists between !.example.org and
zz.example.org, whereas in fact it only provides that proof between
*.example.org and zz.example.org.

This gives an attacker a way to prove that anything between
!.example.org and *.example.org doesn't exists, when it may well do so.

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
2018-01-19 22:11:16 +01:00

185 lines
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Makefile
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#
# Copyright (C) 2006-2016 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
PKG_NAME:=dnsmasq
PKG_VERSION:=2.78
PKG_RELEASE:=9
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
PKG_SOURCE_URL:=http://thekelleys.org.uk/dnsmasq/
PKG_HASH:=89949f438c74b0c7543f06689c319484bd126cc4b1f8c745c742ab397681252b
PKG_LICENSE:=GPL-2.0
PKG_LICENSE_FILES:=COPYING
PKG_CPE_ID:=cpe:/a:thekelleys:dnsmasq
PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(BUILD_VARIANT)/$(PKG_NAME)-$(PKG_VERSION)
PKG_INSTALL:=1
PKG_BUILD_PARALLEL:=1
PKG_CONFIG_DEPENDS:= CONFIG_PACKAGE_dnsmasq_$(BUILD_VARIANT)_dhcp \
CONFIG_PACKAGE_dnsmasq_$(BUILD_VARIANT)_dhcpv6 \
CONFIG_PACKAGE_dnsmasq_$(BUILD_VARIANT)_dnssec \
CONFIG_PACKAGE_dnsmasq_$(BUILD_VARIANT)_auth \
CONFIG_PACKAGE_dnsmasq_$(BUILD_VARIANT)_ipset \
CONFIG_PACKAGE_dnsmasq_$(BUILD_VARIANT)_conntrack \
CONFIG_PACKAGE_dnsmasq_$(BUILD_VARIANT)_noid \
CONFIG_PACKAGE_dnsmasq_$(BUILD_VARIANT)_broken_rtc
include $(INCLUDE_DIR)/package.mk
define Package/dnsmasq/Default
SECTION:=net
CATEGORY:=Base system
TITLE:=DNS and DHCP server
URL:=http://www.thekelleys.org.uk/dnsmasq/
DEPENDS:=+libubus
USERID:=dnsmasq=453:dnsmasq=453
endef
define Package/dnsmasq
$(call Package/dnsmasq/Default)
VARIANT:=nodhcpv6
endef
define Package/dnsmasq-dhcpv6
$(call Package/dnsmasq/Default)
TITLE += (with DHCPv6 support)
DEPENDS+=@IPV6
VARIANT:=dhcpv6
endef
define Package/dnsmasq-full
$(call Package/dnsmasq/Default)
TITLE += (with DNSSEC, DHCPv6, Auth DNS, IPset, Conntrack, NO_ID enabled by default)
DEPENDS+=+PACKAGE_dnsmasq_full_dnssec:libnettle \
+PACKAGE_dnsmasq_full_ipset:kmod-ipt-ipset \
+PACKAGE_dnsmasq_full_conntrack:libnetfilter-conntrack
VARIANT:=full
endef
define Package/dnsmasq/description
It is intended to provide coupled DNS and DHCP service to a LAN.
endef
define Package/dnsmasq-dhcpv6/description
$(call Package/dnsmasq/description)
This is a variant with DHCPv6 support
endef
define Package/dnsmasq-full/description
$(call Package/dnsmasq/description)
This is a fully configurable variant with DHCPv4, DHCPv6, DNSSEC, Authoritative DNS
and IPset, Conntrack support & NO_ID enabled by default.
endef
define Package/dnsmasq/conffiles
/etc/config/dhcp
/etc/dnsmasq.conf
endef
define Package/dnsmasq-full/config
if PACKAGE_dnsmasq-full
config PACKAGE_dnsmasq_full_dhcp
bool "Build with DHCP support."
default y
config PACKAGE_dnsmasq_full_dhcpv6
bool "Build with DHCPv6 support."
depends on IPV6 && PACKAGE_dnsmasq_full_dhcp
default y
config PACKAGE_dnsmasq_full_dnssec
bool "Build with DNSSEC support."
default y
config PACKAGE_dnsmasq_full_auth
bool "Build with the facility to act as an authoritative DNS server."
default y
config PACKAGE_dnsmasq_full_ipset
bool "Build with IPset support."
default y
config PACKAGE_dnsmasq_full_conntrack
bool "Build with Conntrack support."
default y
config PACKAGE_dnsmasq_full_noid
bool "Build with NO_ID. (hide *.bind pseudo domain)"
default y
config PACKAGE_dnsmasq_full_broken_rtc
bool "Build with HAVE_BROKEN_RTC."
default n
endif
endef
Package/dnsmasq-dhcpv6/conffiles = $(Package/dnsmasq/conffiles)
Package/dnsmasq-full/conffiles = $(Package/dnsmasq/conffiles)
TARGET_CFLAGS += -ffunction-sections -fdata-sections
TARGET_LDFLAGS += -Wl,--gc-sections
COPTS = $(if $(CONFIG_IPV6),,-DNO_IPV6)
ifeq ($(BUILD_VARIANT),nodhcpv6)
COPTS += -DNO_DHCP6
endif
ifeq ($(BUILD_VARIANT),full)
COPTS += $(if $(CONFIG_PACKAGE_dnsmasq_$(BUILD_VARIANT)_dhcp),,-DNO_DHCP) \
$(if $(CONFIG_PACKAGE_dnsmasq_$(BUILD_VARIANT)_dhcpv6),,-DNO_DHCP6) \
$(if $(CONFIG_PACKAGE_dnsmasq_$(BUILD_VARIANT)_dnssec),-DHAVE_DNSSEC) \
$(if $(CONFIG_PACKAGE_dnsmasq_$(BUILD_VARIANT)_auth),,-DNO_AUTH) \
$(if $(CONFIG_PACKAGE_dnsmasq_$(BUILD_VARIANT)_ipset),,-DNO_IPSET) \
$(if $(CONFIG_PACKAGE_dnsmasq_$(BUILD_VARIANT)_conntrack),-DHAVE_CONNTRACK,) \
$(if $(CONFIG_PACKAGE_dnsmasq_$(BUILD_VARIANT)_noid),-DNO_ID,) \
$(if $(CONFIG_PACKAGE_dnsmasq_$(BUILD_VARIANT)_broken_rtc),-DHAVE_BROKEN_RTC)
COPTS += $(if $(CONFIG_LIBNETTLE_MINI),-DNO_GMP,)
else
COPTS += -DNO_AUTH -DNO_IPSET -DNO_ID
endif
MAKE_FLAGS := \
$(TARGET_CONFIGURE_OPTS) \
CFLAGS="$(TARGET_CFLAGS) $(TARGET_CPPFLAGS)" \
LDFLAGS="$(TARGET_LDFLAGS)" \
COPTS="$(COPTS)" \
PREFIX="/usr"
define Package/dnsmasq/install
$(INSTALL_DIR) $(1)/usr/sbin
$(CP) $(PKG_INSTALL_DIR)/usr/sbin/dnsmasq $(1)/usr/sbin/
$(INSTALL_DIR) $(1)/etc/config
$(INSTALL_DATA) ./files/dhcp.conf $(1)/etc/config/dhcp
$(INSTALL_DATA) ./files/dnsmasq.conf $(1)/etc/dnsmasq.conf
$(INSTALL_DIR) $(1)/etc/init.d
$(INSTALL_BIN) ./files/dnsmasq.init $(1)/etc/init.d/dnsmasq
$(INSTALL_DIR) $(1)/etc/hotplug.d/dhcp
$(INSTALL_DIR) $(1)/etc/hotplug.d/neigh
$(INSTALL_DIR) $(1)/etc/hotplug.d/ntp
$(INSTALL_DIR) $(1)/etc/hotplug.d/tftp
$(INSTALL_DATA) ./files/dnsmasqsec.hotplug $(1)/etc/hotplug.d/ntp/25-dnsmasqsec
$(INSTALL_DIR) $(1)/usr/share/dnsmasq
$(INSTALL_DATA) ./files/rfc6761.conf $(1)/usr/share/dnsmasq/
$(INSTALL_DIR) $(1)/usr/lib/dnsmasq
$(INSTALL_BIN) ./files/dhcp-script.sh $(1)/usr/lib/dnsmasq/dhcp-script.sh
$(INSTALL_DIR) $(1)/usr/share/acl.d
$(INSTALL_DATA) ./files/dnsmasq_acl.json $(1)/usr/share/acl.d/
endef
Package/dnsmasq-dhcpv6/install = $(Package/dnsmasq/install)
define Package/dnsmasq-full/install
$(call Package/dnsmasq/install,$(1))
ifneq ($(CONFIG_PACKAGE_dnsmasq_full_dnssec),)
$(INSTALL_DIR) $(1)/usr/share/dnsmasq
$(INSTALL_DATA) $(PKG_BUILD_DIR)/trust-anchors.conf $(1)/usr/share/dnsmasq
endif
endef
$(eval $(call BuildPackage,dnsmasq))
$(eval $(call BuildPackage,dnsmasq-dhcpv6))
$(eval $(call BuildPackage,dnsmasq-full))
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