Sync from SUSE:SLFO:Main dnsmasq revision 75c943c030cd440baf441995fdfa7a7f

This commit is contained in:
Adrian Schröter 2024-06-14 17:13:58 +02:00
parent ec5f7e589c
commit 6a8787759d
9 changed files with 50 additions and 94 deletions

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From eb92fb32b746f2104b0f370b5b295bb8dd4bd5e5 Mon Sep 17 00:00:00 2001
From: Simon Kelley <simon@thekelleys.org.uk>
Date: Tue, 7 Mar 2023 22:07:46 +0000
Subject: [PATCH] Set the default maximum DNS UDP packet size to 1232.
http://www.dnsflagday.net/2020/ refers.
Thanks to Xiang Li for the prompt.
---
CHANGELOG | 9 ++++++++-
man/dnsmasq.8 | 3 ++-
src/config.h | 2 +-
3 files changed, 11 insertions(+), 3 deletions(-)
--- CHANGELOG.orig
+++ CHANGELOG
@@ -11,7 +11,14 @@ version 2.89
for reporting the bug and for his great efforts in chasing
it down.
+ Set the default maximum DNS UDP packet sice to 1232. This
+ has been the recommended value since 2020 because it's the
+ largest value that avoid fragmentation, and fragmentation
+ is just not reliable on the modern internet, especially
+ for IPv6. It's still possible to override this with
+ --edns-packet-max for special circumstances.
+
version 2.88
Fix bug in --dynamic-host when an interface has /16 IPv4
address. Thanks to Mark Dietzer for spotting this.
--- man/dnsmasq.8.orig
+++ man/dnsmasq.8
@@ -183,7 +183,8 @@ to zero completely disables DNS function
.TP
.B \-P, --edns-packet-max=<size>
Specify the largest EDNS.0 UDP packet which is supported by the DNS
-forwarder. Defaults to 4096, which is the RFC5625-recommended size.
+forwarder. Defaults to 1232, which is the recommended size following the
+DNS flag day in 2020. Only increase if you know what you are doing.
.TP
.B \-Q, --query-port=<query_port>
Send outbound DNS queries from, and listen for their replies on, the
--- src/config.h.orig
+++ src/config.h
@@ -19,7 +19,7 @@
#define CHILD_LIFETIME 150 /* secs 'till terminated (RFC1035 suggests > 120s) */
#define TCP_MAX_QUERIES 100 /* Maximum number of queries per incoming TCP connection */
#define TCP_BACKLOG 32 /* kernel backlog limit for TCP connections */
-#define EDNS_PKTSZ 4096 /* default max EDNS.0 UDP packet from RFC5625 */
+#define EDNS_PKTSZ 1232 /* default max EDNS.0 UDP packet from from /dnsflagday.net/2020 */
#define SAFE_PKTSZ 1232 /* "go anywhere" UDP packet size, see https://dnsflagday.net/2020/ */
#define KEYBLOCK_LEN 40 /* choose to minimise fragmentation when storing DNSSEC keys */
#define DNSSEC_WORK 50 /* Max number of queries to validate one question */

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@ -1,6 +1,6 @@
--- src/dnsmasq.c.orig
+++ src/dnsmasq.c
@@ -731,11 +731,10 @@ int main (int argc, char **argv)
@@ -728,11 +728,10 @@ int main (int argc, char **argv)
if (!option_bool(OPT_DEBUG) && getuid() == 0)
{
int bad_capabilities = 0;

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@ -1,3 +1,30 @@
-------------------------------------------------------------------
Wed Feb 14 17:39:46 UTC 2024 - Reinhard Max <max@suse.com>
- update to 2.90:
* CVE-2023-50387, CVE-2023-50868, bsc#1219823, bsc#1219826:
Denial Of Service while trying to validate specially crafted
DNSSEC responses
* CVE-2023-49441, bsc#1226091: integer overflow via forward_query
* Fix reversion in --rev-server introduced in 2.88 which caused
breakage if the prefix length is not exactly divisible by 8
(IPv4) or 4 (IPv6).
* Fix possible SEGV when there server(s) for a particular domain
are configured, but no server which is not qualified for a
particular domain.
* Set the default maximum DNS UDP packet sice to 1232.
Obsoletes: dnsmasq-CVE-2023-28450.patch
* Add --no-dhcpv4-interface and --no-dhcpv6-interface for better
control over which inetrfaces are providing DHCP service.
* Fix issue with stale caching
* Add configurable caching for arbitrary RR-types.
* Add --filter-rr option, to filter arbitrary RR-types.
-------------------------------------------------------------------
Fri Oct 13 08:48:49 UTC 2023 - Thorsten Kukuk <kukuk@suse.com>
- SLP got dropped, remove config (bsc#1214884)
-------------------------------------------------------------------
Sat May 13 16:48:15 UTC 2023 - Callum Farmer <gmbr3@opensuse.org>

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@ -1,12 +0,0 @@
#############################################################################
#
# OpenSLP registration file
#
# register domain name service (DNS) daemon
#
#############################################################################
service:domain://$HOSTNAME:53,en,65535
watch-port-udp=53
description=Domain Name Service

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@ -1,7 +1,7 @@
#
# spec file for package dnsmasq
#
# Copyright (c) 2023 SUSE LLC
# Copyright (c) 2024 SUSE LLC
#
# All modifications and additions to the file contributed by third parties
# remain the property of their copyright owners, unless otherwise agreed
@ -22,7 +22,7 @@
%bcond_with tftp_user_package
%endif
Name: dnsmasq
Version: 2.89
Version: 2.90
Release: 0
Summary: DNS Forwarder and DHCP Server
License: GPL-2.0-only OR GPL-3.0-only
@ -31,12 +31,10 @@ URL: https://thekelleys.org.uk/dnsmasq/
Source0: https://thekelleys.org.uk/%{name}/%{name}-%{version}.tar.xz
Source1: https://thekelleys.org.uk/%{name}/%{name}-%{version}.tar.xz.asc
Source2: %{name}.keyring
Source3: dnsmasq.reg
Source4: dnsmasq.service
Source5: rc.dnsmasq-suse
Source6: system-user-dnsmasq.conf
Patch0: dnsmasq-groups.patch
Patch1: dnsmasq-CVE-2023-28450.patch
BuildRequires: dbus-1-devel
BuildRequires: dos2unix
BuildRequires: libidn2-devel
@ -167,9 +165,8 @@ fi
%install
make install-i18n DESTDIR=%{buildroot} PREFIX=%{_prefix} AWK=gawk COPTS=%{_copts}
install -d -m 755 %{buildroot}/%{_sysconfdir}/slp.reg.d
install -d -m 755 %{buildroot}/%{_sysconfdir}/
install -m 644 dnsmasq.conf.example %{buildroot}/%{_sysconfdir}/dnsmasq.conf
install -m 644 %{SOURCE3} %{buildroot}/%{_sysconfdir}/slp.reg.d/
install -d 755 %{buildroot}%{_datadir}/dbus-1/system.d/
install -m 644 dbus/dnsmasq.conf %{buildroot}%{_datadir}/dbus-1/system.d/dnsmasq.conf
install -D -m 0644 %{SOURCE4} %{buildroot}%{_unitdir}/dnsmasq.service
@ -207,8 +204,6 @@ rm -rf contrib/MacOSX-launchd
%config(noreplace) %{_sysconfdir}/dnsmasq.conf
%{_sbindir}/dnsmasq
%{_sbindir}/rcdnsmasq
%dir %{_sysconfdir}/slp.reg.d/
%config %attr(0644,root,root) /%{_sysconfdir}/slp.reg.d/dnsmasq.reg
%{_mandir}/man8/dnsmasq.8%{?ext_man}
%{_datadir}/dbus-1/system.d/dnsmasq.conf
%{_unitdir}/dnsmasq.service