File: RELEASE-NOTES-BIND-9.7.3.html

package info (click to toggle)
bind9 1:9.7.3.dfsg-1~squeeze19
  • links: PTS, VCS
  • area: main
  • in suites: squeeze-lts
  • size: 31,548 kB
  • ctags: 26,523
  • sloc: ansic: 270,641; sh: 23,834; xml: 17,623; makefile: 4,373; perl: 3,866; cpp: 1,803; tcl: 842; python: 109
file content (318 lines) | stat: -rw-r--r-- 16,812 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title></title><link rel="stylesheet" href="release-notes.css" type="text/css" /><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /></head><body><div class="article"><div class="titlepage"><hr /></div>

  <div class="section" title="Introduction"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="id2549151"></a>Introduction</h2></div></div></div>
    
    <p>
			BIND 9.7.3 is the current release of BIND 9.7.
		</p>
    <p>
			This document summarizes changes from BIND 9.7.1 to BIND 9.7.3.
			Please see the CHANGES file in the source code release for a
			complete list of all changes.
		</p>
  </div>

  <div class="section" title="Download"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="id3415638"></a>Download</h2></div></div></div>
    
    <p>
                        The latest development version of BIND 9 software can always be found
                        on our web site at
      <a class="ulink" href="http://www.isc.org/downloads/development" target="_top">http://www.isc.org/downloads/development</a>.
                There you will find additional information about each release,
                        source code, and some pre-compiled versions for certain operating
                        systems.
		</p>
  </div>

  <div class="section" title="Support"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="id3415690"></a>Support</h2></div></div></div>
    
    <p>Product support information is available on
      <a class="ulink" href="http://www.isc.org/services/support" target="_top">http://www.isc.org/services/support</a>
      for paid support options.  Free support is provided by our user
 			community via a mailing list.  Information on all public email
 			lists is available at
      <a class="ulink" href="https://lists.isc.org/mailman/listinfo" target="_top">https://lists.isc.org/mailman/listinfo</a>.
    </p>
  </div>

  <div class="section" title="New Features"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="id3415627"></a>New Features</h2></div></div></div>
    
		<div class="section" title="9.7.2"><div class="titlepage"><div><div><h3 class="title"><a id="id3415698"></a>9.7.2</h3></div></div></div>
			
	    <div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
					Zones may be dynamically added and removed with the
					“rndc addzone” and “rndc delzone” commands.  These
					dynamically added zones are written to a per-view
					configuration file.  Do not rely on the configuration
					file name nor contents as this will change in a future
					release.  This is an experimental feature at this time.
				</li><li class="listitem">
					Added new “filter-aaaa-on-v4” access control list to
					select which IPv4 clients have AAAA record filtering
					applied.
				</li><li class="listitem">
					A new command “rndc secroots” was added to dump a combined
					summary of the currently managed keys combined with statically
					configured trust anchors.
				</li><li class="listitem">
					Added support to load new keys into managed zones without
					signing immediately with "rndc loadkeys".  Added support
					to link keys with "dnssec-keygen -S" and
					"dnssec-settime -S".
				</li></ul></div>
		</div>
  </div>

  <div class="section" title="Feature Changes"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="id3415770"></a>Feature Changes</h2></div></div></div>
    
		<div class="section" title="9.7.2"><div class="titlepage"><div><div><h3 class="title"><a id="id3415775"></a>9.7.2</h3></div></div></div>
			
	    <div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
					Documentation improvements
				</li><li class="listitem">
					ORCHID prefixes were removed from the automatic empty
					zone list.
				</li><li class="listitem">
					Improved handling of GSSAPI security contexts.  Specifically,
					better memory management of cached contexts, limited lifetime
					of a context to 1 hour, and added a “realm” command to
					nsupdate to allow selection of a non-default realm name.
				</li><li class="listitem">
					The contributed tool “zkt” was updated to version 1.0.
				</li></ul></div>
		</div>
  </div>

  <div class="section" title="Security Fixes"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="id3415805"></a>Security Fixes</h2></div></div></div>
    
		<div class="section" title="9.7.2-P3"><div class="titlepage"><div><div><h3 class="title"><a id="id3415810"></a>9.7.2-P3</h3></div></div></div>
			
			<div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
				 	Adding a NO DATA signed negative response to cache failed to clear
				  any matching RRSIG records already in cache. A subsequent lookup
				  of the cached NO DATA entry could crash named (INSIST) when the
				  unexpected RRSIG was also returned with the NO DATA cache entry.
				  [RT #22288] [CVE-2010-3613] [VU#706148]
				</li><li class="listitem">
					BIND, acting as a DNSSEC validator, was determining if the NS RRset
				  is insecure based on a value that could mean either that the RRset
				  is actually insecure or that there wasn't a matching key for the RRSIG
				  in the DNSKEY RRset when resuming from validating the DNSKEY RRset.
				  This can happen when in the middle of a DNSKEY algorithm rollover,
				  when two different algorithms were used to sign a zone but only the
				  new set of keys are in the zone DNSKEY RRset.
					[RT #22309] [CVE-2010-3614] [VU#837744]
				</li><li class="listitem">
					<p>
				 		When BIND is running as an authoritative server for a zone and
				   	receives a query for that zone data, it first checks for allow-query
				   	acls in the zone statement, then in that view, then in global
				   	options. If none of these exist, it defaults to allowing any query
				   	(allow-query {"any"};).
					</p>
					<p>
			   		With this bug, if the allow-query is not set in the zone statement,
				   	it failed to check in view or global options and fell back to the
				   	default of allowing any query. This means that queries that the zone
				   	owner did not wish to allow were incorrectly allowed.
						[RT #22418] [CVE-2010-3615] [VU#510208]
					</p>
				</li></ul></div>
		</div>
		<div class="section" title="9.7.2-P2"><div class="titlepage"><div><div><h3 class="title"><a id="id3415862"></a>9.7.2-P2</h3></div></div></div>
			
			<div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
					A flaw where the wrong ACL was applied was fixed.  This flaw
					allowed access to a cache via recursion even though the ACL
					disallowed it.
				</li></ul></div>
		</div>
		<div class="section" title="9.7.2-P1"><div class="titlepage"><div><div><h3 class="title"><a id="id3415878"></a>9.7.2-P1</h3></div></div></div>
			
	    <div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
					If BIND, acting as a DNSSEC validating server, has two or more trust
	        anchors configured in named.conf for the same zone (such as
	        example.com) and the response for a record in that zone from the
	        authoritative server includes a bad signature, the validating server
	        will crash while trying to validate that query.
				</li></ul></div>
		</div>
  </div>

  <div class="section" title="Bug Fixes"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="id3415898"></a>Bug Fixes</h2></div></div></div>
    
		<div class="section" title="9.7.3"><div class="titlepage"><div><div><h3 class="title"><a id="id3415904"></a>9.7.3</h3></div></div></div>
			
	    <div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
				BIND now builds with threads disabled in versions of NetBSD earlier
				than 5.0 and with pthreads enabled by default in NetBSD versions 5.0
				and higher. Also removes support for unproven-pthreads, mit-pthreads
				and ptl2. [RT #19203]
				</li><li class="listitem">
				Added a regression test for fix 2896/RT #21045 ("rndc sign" failed
				to properly update the zone when adding a DNSKEY for publication
				only). [RT #21324]
				</li><li class="listitem">
				"nsupdate -l" now gives error message if "session.key" file is not
				found. [RT #21670]
				</li><li class="listitem">
				HPUX now correctly defaults to using /dev/poll, which should
				increase performance. [RT #21919]
				</li><li class="listitem">
				If named is running as a threaded application, after an "rndc stop"
				command has been issued, other inbound TCP requests can cause named
				to hang and never complete shutdown. [RT #22108]
				</li><li class="listitem">
				After an "rndc reconfig", the refresh timer for managed-keys is ignored, resulting in managed-keys
				not being refreshed until named is restarted. [RT #22296]
				</li><li class="listitem">
				An NSEC3PARAM record placed inside a zone which is not properly
				signed with NSEC3 could cause named to crash, if changed via dynamic
				update. [RT #22363]				
				</li><li class="listitem">
				"rndc -h" now includes "loadkeys" option. [RT #22493]
				</li><li class="listitem">
				When performing a GSS-TSIG signed dynamic zone update, memory could be
				leaked. This causes an unclean shutdown and may affect long-running
				servers. [RT #22573]
				</li><li class="listitem">
				A bug in NetBSD and FreeBSD kernels with SO_ACCEPTFILTER enabled allows
				for a TCP DoS attack. Until there is a kernel fix, ISC is disabling
				SO_ACCEPTFILTER support in BIND. [RT #22589]
				</li><li class="listitem">
When signing records, named didn't filter out any TTL changes
to DNSKEY records. This resulted in an incomplete key set. TTL
changes are now dealt with before signing.
[RT #22590]
				</li><li class="listitem">
				Corrected a defect where a combination of dynamic updates and zone transfers incorrectly locked the in-memory zone database, causing
				named to freeze. [RT #22614]
				</li><li class="listitem">
				Don't run MX checks (check-mx) when the MX record points to ".".
[RT #22645]
				</li><li class="listitem">
				DST key reference counts can now be incremented via dst_key_attach.
[RT #22672]
				</li><li class="listitem">
The IN6_IS_ADDR_LINKLOCAL and
IN6_IS_ADDR_SITELOCAL macros in win32 were updated/corrected
per current Windows OS. [RT #22724]
				</li><li class="listitem">
				"dnssec-settime -S" no longer tests prepublication interval validity
				when the interval is set to 0. [RT #22761]
				</li><li class="listitem">
				isc_mutex_init_errcheck() in phtreads/mutex.c failed to destroy attr. [RT #22766]
				</li><li class="listitem">
				The Kerberos realm was being truncated when being pulled from the
				the host prinicipal, make krb5-self updates fail. [RT #22770]
				</li><li class="listitem">
				named failed to preserve the case of domain names in RDATA which is not compressible when writing master files. [RT #22863]
				</li><li class="listitem">
The man page for dnssec-keyfromlabel incorrectly had "-U" rather
than the correct option "-I". [RT #22887]
				</li><li class="listitem">
The "rndc" command usage statement was missing the "-b" option.
[RT #22937]
				</li><li class="listitem">
There was a bug in how the clients-per-query code worked with some
query patterns. This could result, in rare circumstances, in having all
the client query slots filled with queries for the same DNS label,
essentially ignoring the max-clients-per-query setting.
[RT #22972]
				</li><li class="listitem">
The secure zone update feature in named is based on the zone
being signed and configured for dynamic updates. A bug in the ACL
processing for "allow-update { none; };" resulted in a zone that is
supposed to be static being treated as a dynamic zone. Thus, name
would try to sign/re-sign that zone erroneously. [RT #23120]
				</li></ul></div>
		</div>
		<div class="section" title="9.7.2-P3"><div class="titlepage"><div><div><h3 class="title"><a id="id3415913"></a>9.7.2-P3</h3></div></div></div>
			
			<div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
					Microsoft changed the behavior of sockets between NT/XP based
				  stacks vs Vista/windows7 stacks. Server 2003/2008 have the older
				  behavior, 2008r2 has the new behavior. With the change, different
				  error results are possible, so ISC adapted BIND to handle the new
				  error results.
				  This resolves an issue where sockets would shut down on
				  Windows servers causing named to stop responding to queries.
					[RT #21906]
				</li><li class="listitem">
				 	Windows has non-POSIX compliant behavior in its rename() and unlink()
				  calls. This caused journal compaction to fail on Windows BIND servers
				  with the log error: "dns_journal_compact failed: failure".
					[RT #22434]
				</li></ul></div>
		</div>
		<div class="section" title="9.7.2-P1"><div class="titlepage"><div><div><h3 class="title"><a id="id3416078"></a>9.7.2-P1</h3></div></div></div>
			
			<div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
					A bug, introduced in BIND 9.7.2, caused named to fail to start
					if a master zone file was unreadable or missing.  This has
					been corrected in 9.7.2-P1.
				</li><li class="listitem">
	        BIND previously accepted answers from authoritative servers that did
	        not provide a "proper" response, such as not setting AA bit.  BIND was
	        changed to be more strict in what it accepted but this caused
	        operational issues.  This new strictness has been backed out in
	        9.7.2-P1.
	      </li></ul></div>
		</div>
		<div class="section" title="9.7.2"><div class="titlepage"><div><div><h3 class="title"><a id="id3416105"></a>9.7.2</h3></div></div></div>
			
	    <div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
					Removed a warning message when running BIND 9 under Windows
					for when a TCP connection was aborted.  This is a common
					occurrence and the warning was extraneous.
				</li><li class="listitem">
					Worked around a race condition in the cache database memory
					handling.  Without this fix a DNS cache DB or ADB could
					incorrectly stay in an over memory state, effectively refusing
					further caching, which subsequently made a BIND 9 caching
					server unworkable.
				</li><li class="listitem">
					Partially disabled change 2864 because it would cause
					infinite attempts of RRSIG queries.
				</li><li class="listitem">
					BIND did not properly handle non-cacheable negative responses
					from insecure zones. This caused several non-protocol-compliant
					zones to become unresolvable.  BIND is now more accepting of
					responses it receives from less strict servers.
				</li></ul></div>
		</div>
  </div>

  <div class="section" title="Known issues in this release"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="id3416145"></a>Known issues in this release</h2></div></div></div>
    
    <div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
        <p>
          "make test" will fail on OSX and possibly other operating systems.
          The failure occurs in a new test to check for allow-query ACLs.
          The failure is caused because the source address is not specified on
          the dig commands issued in the test.
        </p>
        <p>
          If running "make test" is part of your usual acceptance process,
          please edit the file <code class="code">bin/tests/system/allow_query/test.sh</code>
          and add
          </p><p>
            <code class="code">-b 10.53.0.2</code>
          </p><p>
          to the <code class="code">DIGOPTS</code> line.
        </p>
      </li></ul></div>
  </div>

  <div class="section" title="Thank You"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="id3416192"></a>Thank You</h2></div></div></div>
    
    <p>
      Thank you to everyone who assisted us in making this release possible.
      If you would like to contribute to ISC to assist us in continuing to make
      quality open source software, please visit our donations page at
      <a class="ulink" href="http://www.isc.org/supportisc" target="_top">http://www.isc.org/supportisc</a>.
    </p>
  </div>
</div></body></html>