this is designed to fix is related to DNSSEC validation on a resolving
name server that allows access to untrusted users. If your system does
not fall into all 3 of these categories you do not need to update
immediately.
This patch or something similar will likely be included in a future
BIND release.
PR: bin/138061
Submitted by: Michael Baker <michael.baker@diversit.com.au>
Original patch submitted by: Volker <volker@vwsoft.com>
Patch reviewed and tweaked by: ISC
Add an OPTION (on by default) to install the appropriate symlinks for
named.conf and rndc.key in /usr/local/etc and /var/named/usr/local/etc.
For bind9[456]:
Add OPTIONs (off by default) for the DLZ configure options, and their
corresponding ports knobs. [1] The basic infrastructure for this was
provided in the PR, but this version is slightly different in a few
details so responsibility for bugs is mine.
PR: ports/122974 [1]
Submitted by: Michael Schout <mschout@gkg.net> [1]
Receipt of a specially-crafted dynamic update message may
cause BIND 9 servers to exit. This vulnerability affects all
servers -- it is not limited to those that are configured to
allow dynamic updates. Access controls will not provide an
effective workaround.
More details can be found here: https://www.isc.org/node/474
All BIND users are encouraged to update to a patched version ASAP.
in DNSSEC lookaside validation (DLV): unrecognized signature algorithms,
which should have been treated as the equivalent of an unsigned zone,
were instead treated as a validation failure.
the fix for the following vulnerability: https://www.isc.org/node/373
Description:
Return values from OpenSSL library functions EVP_VerifyFinal()
and DSA_do_verify() were not checked properly.
Impact:
It is theoretically possible to spoof answers returned from
zones using the DNSKEY algorithms DSA (3) and NSEC3DSA (6).
In short, if you're not using DNSSEC to verify signatures you have
nothing to worry about.
While I'm here, address the issues raised in the PR by adding a knob
to disable building with OpenSSL altogether (which eliminates DNSSEC
capability), and fix the configure arguments to better deal with the
situation where the user has ssl bits in both the base and LOCALBASE.
PR: ports/126297
Submitted by: Ronald F.Guilmette <rfg@tristatelogic.com>
improvements, including, "Additional support for query port randomization
including performance improvement and port range specification."
When building on amd64 ports' configure doesn't properly recognize our
arch, so help it along a bit. [1]
Submitted by: ivan jr sy <ivan_jr@yahoo.com> [1]
- performance improvement over the P1 releases, namely
+ significantly remedying the port allocation issues
+ allowing TCP queries and zone transfers while issuing as many
outstanding UDP queries as possible
+ additional security of port randomization at the same level as P1
- also includes fixes for several bugs in the 9.5.0 base code
of the UDP query-source ports. The server will still use the same query
port for the life of the process, so users for whom the issue of cache
poisoning is highly significant may wish to periodically restart their
server using /etc/rc.d/named restart, or other suitable method.
In order to take advantage of this randomization users MUST have an
appropriate firewall configuration to allow UDP queries to be sent and
answers to be received on random ports; and users MUST NOT specify a
port number using the query-source[-v6] option.
The avoid-v[46]-udp-ports options exist for users who wish to eliminate
certain port numbers from being chosen by named for this purpose. See
the ARM Chatper 6 for more information.
Also please note, this issue applies only to UDP query ports. A random
ephemeral port is always chosen for TCP queries.
This issue applies primarily to name servers whose main purpose is to
resolve random queries (sometimes referred to as "caching" servers, or
more properly as "resolving" servers), although even an "authoritative"
name server will make some queries, primarily at startup time.
This update addresses issues raised in:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1447http://www.kb.cert.org/vuls/id/800113http://tools.ietf.org/html/draft-ietf-dnsext-forgery-resilience
Some of the important features of BIND 9 are:
DNS Security: DNSSEC (signed zones), TSIG (signed DNS requests)
IP version 6: Answers DNS queries on IPv6 sockets, IPv6 resource records (AAAA)
Experimental IPv6 Resolver Library
DNS Protocol Enhancements: IXFR, DDNS, Notify, EDNS0
Improved standards conformance
Views: One server process can provide multiple "views" of the DNS namespace,
e.g. an "inside" view to certain clients, and an "outside" view to others.
Multiprocessor Support, including working threads in this version
BIND 9.5 has a number of new features over previous versions, including:
GSS-TSIG support (RFC 3645), DHCID support
Experimental http server and statistics support for named via xml
More detailed statistics counters, compatible with the ones supported in BIND 8
Faster ACL processing
Efficient LRU cache cleaning mechanism.
NSID support (RFC 5001).
http://www.isc.org/index.pl?/sw/bind/bind8-eol.php
Therefore, per the previous announcement, remove the ports for BIND 8.
This includes the chinese/bind8 slave port, and mail/smc-milter which
has a dependency on libbind_r.a from BIND 8.x. The latter has been
unmaintained since 2005, and is 3 versions behind.
Approved by: portmgr (linimon)
1. The default access control lists (acls) are not being
correctly set. If not set anyone can make recursive queries
and/or query the cache contents.
See also:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2925
2. The DNS query id generation is vulnerable to cryptographic
analysis which provides a 1 in 8 chance of guessing the next
query id for 50% of the query ids. This can be used to perform
cache poisoning by an attacker.
This bug only affects outgoing queries, generated by BIND 9 to
answer questions as a resolver, or when it is looking up data
for internal uses, such as when sending NOTIFYs to slave name
servers.
All users are encouraged to upgrade.
See also:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2926
supports them. This is determined by running ``configure --help'' in
do-configure target and set the shell variable _LATE_CONFIGURE_ARGS
which is then passed to CONFIGURE_ARGS.
- Remove --mandir and --infodir in ports' Makefile where applicable
Few ports use REINPLACE_CMD to achieve the same effect, remove them too.
- Correct some manual pages location from PREFIX/man to MANPREFIX/man
- Define INFO_PATH where necessary
- Document that .info files are installed in a subdirectory relative to
PREFIX/INFO_PATH and slightly change add-plist-info to use INFO_PATH and
subdirectory detection.
PR: ports/111470
Approved by: portmgr
Discussed with: stas (Mk/*), gerald (info related stuffs)
Tested by: pointyhat exp run
2172. [bug] query_addsoa() was being called with a non zone db.
[RT #16834]
If you are running BIND 9.4.0 (either pre-release or final),
you are advised to upgrade as soon as possible to BIND 9.4.1.
following security issues. All users of BIND are encouraged to upgrade
to this version.
2126. [security] Serialise validation of type ANY responses. [RT #16555]
2124. [security] It was possible to dereference a freed fetch
context. [RT #16584]
2089. [security] Raise the minimum safe OpenSSL versions to
OpenSSL 0.9.7l and OpenSSL 0.9.8d. Versions
prior to these have known security flaws which
are (potentially) exploitable in named. [RT #16391]
2088. [security] Change the default RSA exponent from 3 to 65537.
[RT #16391]
2066. [security] Handle SIG queries gracefully. [RT #16300]
1941. [bug] ncache_adderesult() should set eresult even if no
rdataset is passed to it. [RT #15642]
announced by ISC dated 31 October (delivered via e-mail to the
bind-announce@isc.org list today):
Description:
Because of OpenSSL's recently announced vulnerabilities
(CAN-2006-4339, CVE-2006-2937 and CVE-2006-2940) which affect named,
we are announcing this workaround and releasing patches. A proof of
concept attack on OpenSSL has been demonstrated for CAN-2006-4339.
OpenSSL is required to use DNSSEC with BIND.
Fix for version 9.3.2-P1 and lower:
Upgrade to BIND 9.2.3-P2, then generate new RSASHA1 and
RSAMD5 keys for all old keys using the old default exponent
and perform a key rollover to these new keys.
These versions also change the default RSA exponent to be
65537 which is not vulnerable to the attacks described in
CAN-2006-4339.
openssl from ports, and do not use the option to have the port
version overwrite the base version.
Several folks have mentioned this problem in the past, but a
good workaround (and more importantly, solid testing) were
provided by the submitter.
Submitted by: Uffe Vedenbrant <uffe@vedenbrant.se>
1. Add myself as a backup master site (Sourceforge and CPAN ports
already have good enough coverage, so skip them).
2. For all ports that have them, download the PGP signature files.
3. For ports in 2, add a verify target to the Makefile
4. For ports where I was already providing a master site, update the URL.
5. Pet portlint in a couple of places.
incorporated by ISC into the next version of BIND.
The patch addresses a problem with high-load resolvers which
hit memory barriers. Without this patch, running the resolving
name server out of memory would lead to "unpredictable results."
Of course, the canonical answer to this problem is to put more
memory into the system, however that is not always possible, and
the code should be able to handle this situation gracefully in
any case.
Approved by: portmgr (krion)
