Sicherheit: Mehrere Probleme in bind

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openSUSE Security Update: Security update for bind
______________________________________________________________________________

Announcement ID: openSUSE-SU-2020:1699-1
Rating: moderate
References: #1100369 #1109160 #1118367 #1118368 #1128220
#1156205 #1157051 #1161168 #1170667 #1170713
#1171313 #1171740 #1172958 #1173307 #1173311
#1173983 #1175443 #1176092 #1176674 #906079

Cross-References: CVE-2017-3136 CVE-2018-5741 CVE-2019-6477
CVE-2020-8616 CVE-2020-8617 CVE-2020-8618
CVE-2020-8619 CVE-2020-8620 CVE-2020-8621
CVE-2020-8622 CVE-2020-8623 CVE-2020-8624

Affected Products:
openSUSE Leap 15.2
______________________________________________________________________________

An update that solves 12 vulnerabilities and has 8 fixes is
now available.

Description:

This update for bind fixes the following issues:

BIND was upgraded to version 9.16.6:

Note:

- bind is now more strict in regards to DNSSEC. If queries are not
working, check for DNSSEC issues. For instance, if bind is used in a
namserver forwarder chain, the forwarding DNS servers must support
DNSSEC.

Fixing security issues:

- CVE-2020-8616: Further limit the number of queries that can be triggered
from a request. Root and TLD servers are no longer exempt from
max-recursion-queries. Fetches for missing name server. (bsc#1171740)
Address records are limited to 4 for any domain.
- CVE-2020-8617: Replaying a TSIG BADTIME response as a request could
trigger an assertion failure. (bsc#1171740)
- CVE-2019-6477: Fixed an issue where TCP-pipelined queries could bypass
the tcp-clients limit (bsc#1157051).
- CVE-2018-5741: Fixed the documentation (bsc#1109160).
- CVE-2020-8618: It was possible to trigger an INSIST when determining
whether a record would fit into a TCP message buffer (bsc#1172958).
- CVE-2020-8619: It was possible to trigger an INSIST in
lib/dns/rbtdb.c:new_reference() with a particular zone content and query
patterns (bsc#1172958).
- CVE-2020-8624: "update-policy" rules of type "subdomain"
were
incorrectly treated as "zonesub" rules, which allowed keys used in
"subdomain" rules to update names outside
of the specified subdomains. The problem was fixed by making sure
"subdomain" rules are again processed as described in the ARM
(bsc#1175443).
- CVE-2020-8623: When BIND 9 was compiled with native PKCS#11 support, it
was possible to trigger an assertion failure in code determining the
number of bits in the PKCS#11 RSA public key with a specially crafted
packet (bsc#1175443).
- CVE-2020-8621: named could crash in certain query resolution scenarios
where QNAME minimization and forwarding were both enabled (bsc#1175443).
- CVE-2020-8620: It was possible to trigger an assertion failure by
sending a specially crafted large TCP DNS message (bsc#1175443).
- CVE-2020-8622: It was possible to trigger an assertion failure when
verifying the response to a TSIG-signed request (bsc#1175443).

Other issues fixed:

- Add engine support to OpenSSL EdDSA implementation.
- Add engine support to OpenSSL ECDSA implementation.
- Update PKCS#11 EdDSA implementation to PKCS#11 v3.0.
- Warn about AXFR streams with inconsistent message IDs.
- Make ISC rwlock implementation the default again.
- Fixed issues when using cookie-secrets for AES and SHA2 (bsc#1161168)
- Installed the default files in /var/lib/named and created chroot
environment on systems using transactional-updates (bsc#1100369,
fate#325524)
- Fixed an issue where bind was not working in FIPS mode (bsc#906079).
- Fixed dependency issues (bsc#1118367 and bsc#1118368).
- GeoIP support is now discontinued, now GeoIP2 is used(bsc#1156205).
- Fixed an issue with FIPS (bsc#1128220).
- The liblwres library is discontinued upstream and is no longer included.
- Added service dependency on NTP to make sure the clock is accurate when
bind is starts (bsc#1170667, bsc#1170713).
- Reject DS records at the zone apex when loading master files. Log but
otherwise ignore attempts to add DS records at the zone apex via UPDATE.
- The default value of "max-stale-ttl" has been changed from 1 week
to 12
hours.
- Zone timers are now exported via statistics channel.
- The "primary" and "secondary" keywords, when used as
parameters for
"check-names", were not processed correctly and were being
ignored.
- 'rndc dnstap -roll <value>' did not limit the number of
saved files to
<value>.
- Add 'rndc dnssec -status' command.
- Addressed a couple of situations where named could crash.
- Changed /var/lib/named to owner root:named and perms rwxrwxr-t so that
named, being a/the only member of the "named" group has full r/w
access
yet cannot change directories owned by root in the case of a compromized
named. [bsc#1173307, bind-chrootenv.conf]
- Added "/etc/bind.keys" to NAMED_CONF_INCLUDE_FILES in
/etc/sysconfig/named to suppress warning message re missing file
(bsc#1173983).
- Removed "-r /dev/urandom" from all invocations of rndc-confgen
(init/named system/lwresd.init system/named.init in vendor-files) as
this option is deprecated and causes rndc-confgen to fail. (bsc#1173311,
bsc#1176674, bsc#1170713)
- /usr/bin/genDDNSkey: Removing the use of the -r option in the call
of /usr/sbin/dnssec-keygen as BIND now uses the random number functions
provided by the crypto library (i.e., OpenSSL or a PKCS#11 provider) as
a source of randomness rather than /dev/random. Therefore the -r
command line option no longer has any effect on dnssec-keygen. Leaving
the option in genDDNSkey as to not break compatibility. Patch provided
by Stefan Eisenwiener. [bsc#1171313]
- Put libns into a separate subpackage to avoid file conflicts in the
libisc subpackage due to different sonums (bsc#1176092).
- Require /sbin/start_daemon: both init scripts, the one used in systemd
context as well as legacy sysv, make use of start_daemon.

This update was imported from the SUSE:SLE-15:Update update project.

Patch Instructions:

To install this openSUSE Security Update use the SUSE recommended
installation methods
like YaST online_update or "zypper patch".

Alternatively you can run the command listed for your product:

- openSUSE Leap 15.2:

zypper in -t patch openSUSE-2020-1699=1

Package List:

- openSUSE Leap 15.2 (i586 x86_64):

bind-9.16.6-lp152.14.3.1
bind-chrootenv-9.16.6-lp152.14.3.1
bind-debuginfo-9.16.6-lp152.14.3.1
bind-debugsource-9.16.6-lp152.14.3.1
bind-devel-9.16.6-lp152.14.3.1
bind-utils-9.16.6-lp152.14.3.1
bind-utils-debuginfo-9.16.6-lp152.14.3.1
libbind9-1600-9.16.6-lp152.14.3.1
libbind9-1600-debuginfo-9.16.6-lp152.14.3.1
libdns1605-9.16.6-lp152.14.3.1
libdns1605-debuginfo-9.16.6-lp152.14.3.1
libirs-devel-9.16.6-lp152.14.3.1
libirs1601-9.16.6-lp152.14.3.1
libirs1601-debuginfo-9.16.6-lp152.14.3.1
libisc1606-9.16.6-lp152.14.3.1
libisc1606-debuginfo-9.16.6-lp152.14.3.1
libisccc1600-9.16.6-lp152.14.3.1
libisccc1600-debuginfo-9.16.6-lp152.14.3.1
libisccfg1600-9.16.6-lp152.14.3.1
libisccfg1600-debuginfo-9.16.6-lp152.14.3.1
libns1604-9.16.6-lp152.14.3.1
libns1604-debuginfo-9.16.6-lp152.14.3.1
libuv-debugsource-1.18.0-lp152.4.3.1
libuv-devel-1.18.0-lp152.4.3.1
libuv1-1.18.0-lp152.4.3.1
libuv1-debuginfo-1.18.0-lp152.4.3.1

- openSUSE Leap 15.2 (noarch):

bind-doc-9.16.6-lp152.14.3.1
python3-bind-9.16.6-lp152.14.3.1
sysuser-shadow-2.0-lp152.5.3.1
sysuser-tools-2.0-lp152.5.3.1

- openSUSE Leap 15.2 (x86_64):

bind-devel-32bit-9.16.6-lp152.14.3.1
libbind9-1600-32bit-9.16.6-lp152.14.3.1
libbind9-1600-32bit-debuginfo-9.16.6-lp152.14.3.1
libdns1605-32bit-9.16.6-lp152.14.3.1
libdns1605-32bit-debuginfo-9.16.6-lp152.14.3.1
libirs1601-32bit-9.16.6-lp152.14.3.1
libirs1601-32bit-debuginfo-9.16.6-lp152.14.3.1
libisc1606-32bit-9.16.6-lp152.14.3.1
libisc1606-32bit-debuginfo-9.16.6-lp152.14.3.1
libisccc1600-32bit-9.16.6-lp152.14.3.1
libisccc1600-32bit-debuginfo-9.16.6-lp152.14.3.1
libisccfg1600-32bit-9.16.6-lp152.14.3.1
libisccfg1600-32bit-debuginfo-9.16.6-lp152.14.3.1
libns1604-32bit-9.16.6-lp152.14.3.1
libns1604-32bit-debuginfo-9.16.6-lp152.14.3.1
libuv1-32bit-1.18.0-lp152.4.3.1
libuv1-32bit-debuginfo-1.18.0-lp152.4.3.1

References:

https://www.suse.com/security/cve/CVE-2017-3136.html
https://www.suse.com/security/cve/CVE-2018-5741.html
https://www.suse.com/security/cve/CVE-2019-6477.html
https://www.suse.com/security/cve/CVE-2020-8616.html
https://www.suse.com/security/cve/CVE-2020-8617.html
https://www.suse.com/security/cve/CVE-2020-8618.html
https://www.suse.com/security/cve/CVE-2020-8619.html
https://www.suse.com/security/cve/CVE-2020-8620.html
https://www.suse.com/security/cve/CVE-2020-8621.html
https://www.suse.com/security/cve/CVE-2020-8622.html
https://www.suse.com/security/cve/CVE-2020-8623.html
https://www.suse.com/security/cve/CVE-2020-8624.html
https://bugzilla.suse.com/1100369
https://bugzilla.suse.com/1109160
https://bugzilla.suse.com/1118367
https://bugzilla.suse.com/1118368
https://bugzilla.suse.com/1128220
https://bugzilla.suse.com/1156205
https://bugzilla.suse.com/1157051
https://bugzilla.suse.com/1161168
https://bugzilla.suse.com/1170667
https://bugzilla.suse.com/1170713
https://bugzilla.suse.com/1171313
https://bugzilla.suse.com/1171740
https://bugzilla.suse.com/1172958
https://bugzilla.suse.com/1173307
https://bugzilla.suse.com/1173311
https://bugzilla.suse.com/1173983
https://bugzilla.suse.com/1175443
https://bugzilla.suse.com/1176092
https://bugzilla.suse.com/1176674
https://bugzilla.suse.com/906079

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