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90 commits

Author SHA1 Message Date
W.C.A. Wijngaards
c0c722cd97 DLV removal 2020-08-04 09:05:09 +02:00
W.C.A. Wijngaards
ba0f382eee - CVE-2020-12662 Unbound can be tricked into amplifying an incoming 
query into a large number of queries directed to a target.
- CVE-2020-12663 Malformed answers from upstream name servers can be
  used to make Unbound unresponsive.
 2020-05-19 10:27:27 +02:00
gthess
f7fe95ad7b
Serve stale (#159) 
- Added serve-stale functionality as described in
  draft-ietf-dnsop-serve-stale-10. `serve-expired-*` options can be used
  to configure the behavior.
- Updated cachedb to honor `serve-expired-ttl`; Fixes #107.
- Renamed statistic `num.zero_ttl` to `num.expired` as expired replies
  come with a configurable TTL value (`serve-expired-reply-ttl`).
- Fixed stats when replying with cached, cname-aliased records.
- Added missing default values for redis cachedb backend.
 2020-02-05 14:20:27 +01:00
Ralph Dolmans
edf1ad369a - Scrub RRs from answer section when reusing NXDOMAIN message for subdomain 
answers.
 - For harden-below-nxdomain: do not consider a name to be non-exitent when
   message contains a CNAME record.


git-svn-id: file:///svn/unbound/trunk@5174 be551aaa-1e26-0410-a405-d3ace91eadb9
 2019-04-18 15:09:15 +00:00
Wouter Wijngaards
ce0628ee55 - Fix #4239: set NOTIMPL when deny-any is enabled, for RFC8482. 
git-svn-id: file:///svn/unbound/trunk@5137 be551aaa-1e26-0410-a405-d3ace91eadb9
 2019-03-18 09:26:06 +00:00
Wouter Wijngaards
23505d30a5 - Fix #4190: Please create a "ANY" deny option, adds the option 
deny-any: yes in unbound.conf.  This responds with an empty message
  to queries of type ANY.


git-svn-id: file:///svn/unbound/trunk@4949 be551aaa-1e26-0410-a405-d3ace91eadb9
 2018-10-25 08:07:37 +00:00
Ralph Dolmans
2e5e31e8ac - Added serve-expired-ttl and serve-expired-ttl-reset options. 
git-svn-id: file:///svn/unbound/trunk@4876 be551aaa-1e26-0410-a405-d3ace91eadb9
 2018-08-28 14:21:56 +00:00
Wouter Wijngaards
efe5c8e6be - Fix #4144: dns64 module caches wrong (negative) information. 
git-svn-id: file:///svn/unbound/trunk@4850 be551aaa-1e26-0410-a405-d3ace91eadb9
 2018-08-10 08:03:17 +00:00
Wouter Wijngaards
3a287a70cd Test and fix. 
git-svn-id: file:///svn/unbound/trunk@4583 be551aaa-1e26-0410-a405-d3ace91eadb9
 2018-03-13 13:14:56 +00:00
Wouter Wijngaards
d111aaf64f - Fix #3736: Fix 0 TTL domains stuck on SERVFAIL unless manually 
flushed with serve-expired on.


git-svn-id: file:///svn/unbound/trunk@4582 be551aaa-1e26-0410-a405-d3ace91eadb9
 2018-03-13 12:52:11 +00:00
Wouter Wijngaards
3b25c475f5 - Attempt to remove warning about trailing whitespace. 
git-svn-id: file:///svn/unbound/trunk@4568 be551aaa-1e26-0410-a405-d3ace91eadb9
 2018-03-07 08:52:18 +00:00
Ralph Dolmans
24fc3242fc - Save wildcard RRset from answer with original owner for use in aggressive 
NSEC.


git-svn-id: file:///svn/unbound/trunk@4550 be551aaa-1e26-0410-a405-d3ace91eadb9
 2018-02-22 15:12:31 +00:00
Ralph Dolmans
77f78152ee - Aggressive use of NSEC implementation. Use cached NSEC records to generate 
NXDOMAIN, NODATA and positive wildcard answers.


git-svn-id: file:///svn/unbound/trunk@4522 be551aaa-1e26-0410-a405-d3ace91eadb9
 2018-02-08 13:16:36 +00:00
Wouter Wijngaards
cb28d35bd2 - Fix lock race condition in dns cache dname synthesis. 
git-svn-id: file:///svn/unbound/trunk@4495 be551aaa-1e26-0410-a405-d3ace91eadb9
 2018-02-02 10:33:19 +00:00
Wouter Wijngaards
859ca7db68 - Fix #3397: Fix that when the cache contains an unsigned DNAME in 
the middle of a cname chain, a result without the DNAME could
  be returned.


git-svn-id: file:///svn/unbound/trunk@4446 be551aaa-1e26-0410-a405-d3ace91eadb9
 2018-01-22 14:30:16 +00:00
Wouter Wijngaards
df6fbb82be - Fix #3397: Fix that cachedb could return a partial CNAME chain. 
git-svn-id: file:///svn/unbound/trunk@4445 be551aaa-1e26-0410-a405-d3ace91eadb9
 2018-01-22 13:54:20 +00:00
Wouter Wijngaards
55d8fe2837 - use a cachedb answer even if it's "expired" when serve-expired is yes 
(patch from Jinmei Tatuya).
- trigger refetching of the answer in that case (this will bypass
  cachedb lookup)
- allow storing a 0-TTL answer from cachedb in the in-memory message
  cache when serve-expired is yes


git-svn-id: file:///svn/unbound/trunk@4353 be551aaa-1e26-0410-a405-d3ace91eadb9
 2017-09-19 09:08:29 +00:00
Wouter Wijngaards
abb6cfdebd - upgrade aclocal(pkg.m4 0.29.1), config.guess(2016-10-02), 
config.sub(2016-09-05).
- annotate case statement fallthrough for gcc 7.1.1.
- flex output from flex 2.6.1.
- snprintf of thread number does not warn about truncated string.


git-svn-id: file:///svn/unbound/trunk@4278 be551aaa-1e26-0410-a405-d3ace91eadb9
 2017-07-24 09:04:18 +00:00
Wouter Wijngaards
c4869780d1 - Fix #1278: Incomplete wildcard proof. 
git-svn-id: file:///svn/unbound/trunk@4218 be551aaa-1e26-0410-a405-d3ace91eadb9
 2017-06-12 10:11:28 +00:00
Wouter Wijngaards
893159454f - Adjust servfail by iterator to not store in cache when serve-expired 
is enabled, to avoid overwriting useful information there.


git-svn-id: file:///svn/unbound/trunk@4153 be551aaa-1e26-0410-a405-d3ace91eadb9
 2017-05-12 12:16:41 +00:00
Ralph Dolmans
d30ae35c62 - Do not add current time twice to TTL before ECS cache store. 
- Do not touch rrset cache after ECS cache message generation.
- Use LDNS_EDNS_CLIENT_SUBNET as default ECS opcode.


git-svn-id: file:///svn/unbound/trunk@4086 be551aaa-1e26-0410-a405-d3ace91eadb9
 2017-04-03 09:36:18 +00:00
Ralph Dolmans
b0fd814975 - Merge EDNS Client subnet implementation from feature branch into main branch, 
using new EDNS processing framework.


git-svn-id: file:///svn/unbound/trunk@4074 be551aaa-1e26-0410-a405-d3ace91eadb9
 2017-03-21 12:08:17 +00:00
Wouter Wijngaards
c010e93d4a - Fix to rename internally used types from _t to _type, because _t 
type names are reserved by POSIX.
- iana portlist update


git-svn-id: file:///svn/unbound/trunk@3989 be551aaa-1e26-0410-a405-d3ace91eadb9
 2017-01-19 10:25:41 +00:00
Ralph Dolmans
9581c39dcc - QNAME minimisation uses QTYPE=A, therefore always check cache for 
this type in harden-below-nxdomain functionality.


git-svn-id: file:///svn/unbound/trunk@3932 be551aaa-1e26-0410-a405-d3ace91eadb9
 2016-11-22 10:50:53 +00:00
Wouter Wijngaards
4cd296a3f3 - Fixup query_info local_alias init. 
git-svn-id: file:///svn/unbound/trunk@3899 be551aaa-1e26-0410-a405-d3ace91eadb9
 2016-10-20 14:55:57 +00:00
Ralph Dolmans
5d061f13f9 - Validate QNAME minimised NXDOMAIN responses. 
- If QNAME minimisation is enabled, do cache lookup for QTYPE NS in
   harden-below-nxdomain.



git-svn-id: file:///svn/unbound/trunk@3682 be551aaa-1e26-0410-a405-d3ace91eadb9
 2016-03-18 15:44:41 +00:00
Wouter Wijngaards
b8d7976f57 - ANY responses include DNAME records if present, as per Evan Hunt's 
remark in dnsop.


git-svn-id: file:///svn/unbound/trunk@3504 be551aaa-1e26-0410-a405-d3ace91eadb9
 2015-10-14 08:02:14 +00:00
Wouter Wijngaards
cb90782087 - Fix #677 Fix DNAME responses from cache that failed internal chain 
test.


git-svn-id: file:///svn/unbound/trunk@3435 be551aaa-1e26-0410-a405-d3ace91eadb9
 2015-06-26 07:27:32 +00:00
Wouter Wijngaards
ddda275d7b please lint. 
git-svn-id: file:///svn/unbound/trunk@3411 be551aaa-1e26-0410-a405-d3ace91eadb9
 2015-04-23 14:04:46 +00:00
Wouter Wijngaards
ff898bfdd6 - Synthesize ANY responses from cache. Does not search exhaustively, 
but MX,A,AAAA,SOA,NS also CNAME.
- Fix leaked dns64prefix configuration string.


git-svn-id: file:///svn/unbound/trunk@3405 be551aaa-1e26-0410-a405-d3ace91eadb9
 2015-04-17 14:58:07 +00:00
Wouter Wijngaards
b2bdce46be - rename ldns subdirectory to sldns to avoid name collision. 
git-svn-id: file:///svn/unbound/trunk@3380 be551aaa-1e26-0410-a405-d3ace91eadb9
 2015-03-26 10:21:38 +00:00
Wouter Wijngaards
6feb8fb6a5 - Fixes to add integer overflow checks on allocation (defense in depth). 
git-svn-id: file:///svn/unbound/trunk@3372 be551aaa-1e26-0410-a405-d3ace91eadb9
 2015-03-20 15:36:25 +00:00
Wouter Wijngaards
b781f2d48d - Fix that CD flag disables DNS64 processing, returning the DNSSEC 
signed AAAA denial.


git-svn-id: file:///svn/unbound/trunk@3273 be551aaa-1e26-0410-a405-d3ace91eadb9
 2014-11-18 15:15:57 +00:00
Wouter Wijngaards
eb5e9a89c4 - Fix #558: failed prefetch lookup does not remove cached response 
but delays next prefetch (in lieu of caching a SERVFAIL).


git-svn-id: file:///svn/unbound/trunk@3111 be551aaa-1e26-0410-a405-d3ace91eadb9
 2014-04-10 13:56:16 +00:00
Wouter Wijngaards
2b90f38a70 And fix #551 REGENT to COPYRIGHT HOLDER in license in file headings. 
git-svn-id: file:///svn/unbound/trunk@3079 be551aaa-1e26-0410-a405-d3ace91eadb9
 2014-02-07 13:28:39 +00:00
Wouter Wijngaards
d3cbd76546 - Fix sldns to use sldns_ prefix for all ldns_ variables. 
git-svn-id: file:///svn/unbound/trunk@3022 be551aaa-1e26-0410-a405-d3ace91eadb9
 2013-12-03 09:11:16 +00:00
Wouter Wijngaards
29e96e86c9 - separate ldns into core ldns inside ldns/ subdirectory. No more 
--with-ldns is needed and unbound does not rely on libldns.


git-svn-id: file:///svn/unbound/trunk@2998 be551aaa-1e26-0410-a405-d3ace91eadb9
 2013-10-31 15:09:26 +00:00
Wouter Wijngaards
f1fd2b53eb - Fix for 2038, with time_t instead of uint32_t. 
git-svn-id: file:///svn/unbound/trunk@2939 be551aaa-1e26-0410-a405-d3ace91eadb9
 2013-08-20 12:23:42 +00:00
Wouter Wijngaards
c8d22543f3 - Fix#516 dnssec lameness detection for answers that are improper. 
git-svn-id: file:///svn/unbound/trunk@2933 be551aaa-1e26-0410-a405-d3ace91eadb9
 2013-08-08 09:29:33 +00:00
Wouter Wijngaards
773d8e3b84 Fix prefetch and stickyness. 
git-svn-id: file:///svn/unbound/trunk@2632 be551aaa-1e26-0410-a405-d3ace91eadb9
 2012-02-16 11:04:53 +00:00
Wouter Wijngaards
03a7425ead - Fix sticky NS (ghost domain problem) if prefetch is yes. 
git-svn-id: file:///svn/unbound/trunk@2619 be551aaa-1e26-0410-a405-d3ace91eadb9
 2012-02-14 11:06:44 +00:00
Wouter Wijngaards
6dd2c0467e - Fix bug #425: unbound reports wrong TTL in reply, it reports a TTL 
that would be permissible by the RFCs but it is not the TTL in the
  cache.


git-svn-id: file:///svn/unbound/trunk@2581 be551aaa-1e26-0410-a405-d3ace91eadb9
 2012-01-10 09:42:32 +00:00
Wouter Wijngaards
3c87eb6c49 - harden-below-nxdomain: changed so that it activates when the 
cached nxdomain is dnssec secure.  This avoids backwards
         incompatibility because those old servers do not have dnssec.


git-svn-id: file:///svn/unbound/trunk@2407 be551aaa-1e26-0410-a405-d3ace91eadb9
 2011-03-29 09:47:54 +00:00
Wouter Wijngaards
78cc3d8ae1 harden-below-nxdomain option taken from draft-vixie-dnsext-resimprove. 
Default off (for now), as some older software that gives nxdomain for ENT
would be incompatible.  But that would only happen in the reverse tree, and
such software (nonDNSSEC) may go out of style, so in the future a default yes
could be possible.



git-svn-id: file:///svn/unbound/trunk@2347 be551aaa-1e26-0410-a405-d3ace91eadb9
 2010-11-18 08:49:15 +00:00
Wouter Wijngaards
289f13bc25 - implement draft-vixie-dnsext-resimprove-00, we stop on NXDOMAIN. 
git-svn-id: file:///svn/unbound/trunk@2345 be551aaa-1e26-0410-a405-d3ace91eadb9
 2010-11-17 10:02:34 +00:00
Wouter Wijngaards
0b30fca935 - do not synthesize a CNAME message from cache for qtype DS. 
git-svn-id: file:///svn/unbound/trunk@2335 be551aaa-1e26-0410-a405-d3ace91eadb9
 2010-11-05 15:29:50 +00:00
Wouter Wijngaards
9d66b48885 - openbsd-lint fixes: acl_list_get_mem used if debug-alloc enabled. 
iterator get_mem includes priv_get_mem.  delegpt nodup removed.
  listen_pushback, query_info_allocqname, write_socket, send_packet,
  comm_point_set_cb_arg and listen_resume removed.


git-svn-id: file:///svn/unbound/trunk@2222 be551aaa-1e26-0410-a405-d3ace91eadb9
 2010-08-20 13:30:41 +00:00
Wouter Wijngaards
78216e8d02 patch for Gunter bug321 
git-svn-id: file:///svn/unbound/trunk@2218 be551aaa-1e26-0410-a405-d3ace91eadb9
 2010-08-18 16:53:56 +00:00
Wouter Wijngaards
45f74a1497 - Fix integer underflow in prefetch ttl creation from cache. This 
fixes a potential negative prefetch ttl.
-This line, and those below, will be ignored--

M    trunk/services/cache/dns.c
M    trunk/doc/Changelog


git-svn-id: file:///svn/unbound/trunk@2198 be551aaa-1e26-0410-a405-d3ace91eadb9
 2010-07-14 11:13:30 +00:00
Wouter Wijngaards
8360afa15f - fix parentside from cache to be marked dispreferred for bad names. 
git-svn-id: file:///svn/unbound/trunk@2125 be551aaa-1e26-0410-a405-d3ace91eadb9
 2010-05-31 14:39:45 +00:00