dnsmasq v2.83 has a bug in handling duplicate queries which means it may
try to reply using the incorrect network socket. This is especially
noticeable in dual stack environments where replies may be mis-directed to
IPv4 addresses on an IPv6 socket or IPv6 addresses on an IPv4 socket.
This results in system log spam such as:
dnsmasq[16020]: failed to send packet: Network unreachable
dnsmasq[16020]: failed to send packet: Address family not supported by protocol
dnsmasq v2.84test3 resolves these issues.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
This fixes the following security problems in dnsmasq:
* CVE-2020-25681:
Dnsmasq versions before 2.83 is susceptible to a heap-based buffer
overflow in sort_rrset() when DNSSEC is used. This can allow a remote
attacker to write arbitrary data into target device's memory that can
lead to memory corruption and other unexpected behaviors on the target
device.
* CVE-2020-25682:
Dnsmasq versions before 2.83 is susceptible to buffer overflow in
extract_name() function due to missing length check, when DNSSEC is
enabled. This can allow a remote attacker to cause memory corruption
on the target device.
* CVE-2020-25683:
Dnsmasq version before 2.83 is susceptible to a heap-based buffer
overflow when DNSSEC is enabled. A remote attacker, who can create
valid DNS replies, could use this flaw to cause an overflow in a heap-
allocated memory. This flaw is caused by the lack of length checks in
rtc1035.c:extract_name(), which could be abused to make the code
execute memcpy() with a negative size in get_rdata() and cause a crash
in Dnsmasq, resulting in a Denial of Service.
* CVE-2020-25684:
A lack of proper address/port check implemented in Dnsmasq version <
2.83 reply_query function makes forging replies easier to an off-path
attacker.
* CVE-2020-25685:
A lack of query resource name (RRNAME) checks implemented in Dnsmasq's
versions before 2.83 reply_query function allows remote attackers to
spoof DNS traffic that can lead to DNS cache poisoning.
* CVE-2020-25686:
Multiple DNS query requests for the same resource name (RRNAME) by
Dnsmasq versions before 2.83 allows for remote attackers to spoof DNS
traffic, using a birthday attack (RFC 5452), that can lead to DNS
cache poisoning.
* CVE-2020-25687:
Dnsmasq versions before 2.83 is vulnerable to a heap-based buffer
overflow with large memcpy in sort_rrset() when DNSSEC is enabled. A
remote attacker, who can create valid DNS replies, could use this flaw
to cause an overflow in a heap-allocated memory. This flaw is caused
by the lack of length checks in rtc1035.c:extract_name(), which could
be abused to make the code execute memcpy() with a negative size in
sort_rrset() and cause a crash in dnsmasq, resulting in a Denial of
Service.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: CN_SZTL <cnsztl@project-openwrt.eu.org>
This patch was already applied upstream and not needed here.
Fixes: 06403981e1 ("ppp: update to version 2.4.7.git-2019-05-06")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Bump package version after previous changes.
Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
[added missing commit description]
Signed-off-by: Petr Štetiar <ynezz@true.cz>
binary size cost is much less than 1k.
tested on ath79/generic:
bin: 215128 -> 215132 (+4b)
ipk: 111183 -> 111494 (+311b)
Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
this commit removes manual recipes for options and introduces mapping lists:
- DB_OPT_COMMON holds option mappings which are common for all builds;
- DB_OPT_CONFIG holds option mappings which are depend on config settings.
DB_OPT_COMMON is space-separated list of 'words', each of them is in format:
'header_option|value'
'header_option' is added with value 'value' to 'localoptions.h'.
if 'header_option' is preceded by two exclamation marks ('!!')
then option is not added to 'localoptions.h' but replaced in 'sysoptions.h'.
in short:
option|value - add option to localoptions.h
!!option|value - replace option in sysoptions.h
DB_OPT_CONFIG is space-separated list of 'words', each of them is in format:
'header_option|config_variable|value_enabled|value_disabled'
'header_option' is handled likewise in DB_OPT_COMMON.
if 'config_variable' is enabled (technically: not disabled)
then 'header_option' is set to 'value_enabled' and 'value_disabled' otherwise.
in short:
option|config|enabled|disabled = add option to localoptions.h
!!option|config|enabled|disabled = replace option in sysoptions.h
option := (config) ? enabled : disabled
If you're not sure that option's value doesn't have '|' within - add your recipe
manually right after '$(Build/Configure/dropbear_headers)' and write some words
about your decision.
PS about two exclamation marks:
early idea was to use one exclamation mark to denote such header options
but then i thought single exclamation mark may be overlooked by mistake.
Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
- add two helper functions to avoid mistakes with
choice of correct header file to work with
- update rules accordingly
Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
put static options at first place, then place configurable options.
also put DROPBEAR_ECC right before DROPBEAR_ECC_FULL to ease maintainance.
Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
this option was disabled in 2011 and these long nine years showed us that change was definitely wrong.
binary size cost is much less than 1k.
tested on ath79/generic:
bin: 215128 -> 215128 (no change)
ipk: 111108 -> 111183 (+75b)
Fixes: 3c801b3dc0 ("tune some more options by default to decrease size")
Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
The lldpd sources ship a modified local AX_LIB_READLINE M4 macro which
conflicts with the official macro shipped by autoconf-archive.
Due to the official macro having the same name and a higher serial
number, autoconf will prefer including that one instead of the local
copy, preventing the substitution of @READLINE_LIBS@ in Makefile.in
templates, ultimately leading to the following build failure when
linking lldpcli:
...-gcc: error: READLINE_LIBS@: No such file or directory
Avoid this problem by renaming the locally shipped macro to not clash
with the official implementation anymore.
Ref: lldpd/lldpd/pull/423
Acked-by: Stijn Tintel <stijn@linux-ipv6.be>
Tested-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Update dropbear to latest stable 2.81; for the changes see https://matt.ucc.asn.au/dropbear/CHANGES
Refresh patches
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
* noise: take lock when removing handshake entry from table
This is a defense in depth patch backported from upstream to account for any
future issues with list node lifecycles.
* netns: check that route_me_harder packets use the right sk
A test for an issue that goes back to before Linux's git history began. I've
fixed this upstream, but it doesn't look possible to put it into the compat
layer, as it's a core networking problem. But we still test for it in the
netns test and warn on broken kernels.
* qemu: drop build support for rhel 8.2
We now test 8.3+.
* compat: SYM_FUNC_{START,END} were backported to 5.4
* qemu: bump default testing version
The real motivation for this version bump: 5.4.76 made a change that broke our
compat layer.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Allow configuring ipsets with dedicated config sections:
config ipset
list name 'ss_rules_dst_forward'
list name 'ss_rules6_dst_forward'
list domain 't.me'
list domain 'telegram.org'
instead of current, rather inconvenient syntax:
config dnsmasq
...
list ipset '/t.me/telegram.org/ss_rules_dst_forward,ss_rules6_dst_forward'
Current syntax will still continue to work though.
With this change, a LuCI GUI for DNS ipsets should be easy to implement.
Signed-off-by: Aleksandr Mezin <mezin.alexander@gmail.com>
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com> [PKG_RELEASE increase]
59e4fc98162d cache: cache_answer: fix off by one
4cece9cc7db4 cache: cache_record_find: fix buffer overflow
be687257ee0b cmake: tests: provide umdns-san binary
bf01f2dd0089 tests: add dns_handle_packet_file tool
134afc728846 tests: add libFuzzer based fuzzing
de08a2c71ca8 cmake: create static library
cdc18fbb3ea8 interface: fix possible null pointer dereference
1fa034c65cb6 interface: fix value stored to 'fd' is never read
3a67ebe3fc66 Add initial GitLab CI support
50caea125517 cmake: fix include dirs and libs lookup
Signed-off-by: Petr Štetiar <ynezz@true.cz>
