openSUSE Security Update : ntp (openSUSE-2016-649)

This script is Copyright (C) 2016-2017 Tenable Network Security, Inc.


Synopsis :

The remote openSUSE host is missing a security update.

Description :

This update for ntp fixes the following issues :

- Update to 4.2.8p7 (boo#977446) :

- CVE-2016-1547, boo#977459: Validate crypto-NAKs, AKA:
CRYPTO-NAK DoS.

- CVE-2016-1548, boo#977461: Interleave-pivot

- CVE-2016-1549, boo#977451: Sybil vulnerability:
ephemeral association attack.

- CVE-2016-1550, boo#977464: Improve NTP security against
buffer comparison timing attacks.

- CVE-2016-1551, boo#977450: Refclock impersonation
vulnerability

- CVE-2016-2516, boo#977452: Duplicate IPs on unconfig
directives will cause an assertion botch in ntpd.

- CVE-2016-2517, boo#977455: remote configuration
trustedkey/ requestkey/controlkey values are not
properly validated.

- CVE-2016-2518, boo#977457: Crafted addpeer with hmode >
7 causes array wraparound with MATCH_ASSOC.

- CVE-2016-2519, boo#977458: ctl_getitem() return value
not always checked.

- integrate ntp-fork.patch

- Improve the fixes for: CVE-2015-7704, CVE-2015-7705,
CVE-2015-7974

- Restrict the parser in the startup script to the first
occurrance of 'keys' and 'controlkey' in ntp.conf
(boo#957226).

- Enable compile-time support for MS-SNTP
(--enable-ntp-signd). This replaces the w32 patches in
4.2.4 that added the authreg directive. (fate#320758).

- Fix ntp-sntp-dst.patch (boo#975496).

- Call /usr/sbin/sntp with full path to synchronize in
start-ntpd. When run as cron job, /usr/sbin/ is not in
the path, which caused the synchronization to fail.
(boo#962318)

- Speedup ntpq (boo#782060, ntp-speedup-ntpq.patch).

- Sync service files with openSUSE Factory.

- Fix the TZ offset output of sntp during DST
(boo#951559).

- Add ntp-fork.patch and build with threads disabled to
allow name resolution even when running chrooted.

- Update to 4.2.8p6 :

- CVE-2015-8158, boo#962966: Potential Infinite Loop in
ntpq.

- CVE-2015-8138, boo#963002: origin: Zero Origin Timestamp
Bypass.

- CVE-2015-7979, boo#962784: Off-path Denial of Service
(DoS) attack on authenticated broadcast mode.

- CVE-2015-7978, boo#963000: Stack exhaustion in recursive
traversal of restriction list.

- CVE-2015-7977, boo#962970: reslist NULL pointer
dereference.

- CVE-2015-7976, boo#962802: ntpq saveconfig command
allows dangerous characters in filenames.

- CVE-2015-7975, boo#962988: nextvar() missing length
check.

- CVE-2015-7974, boo#962960: Skeleton Key: Missing key
check allows impersonation between authenticated peers.

- CVE-2015-7973, boo#962995: Deja Vu: Replay attack on
authenticated broadcast mode.

- CVE-2015-8140: ntpq vulnerable to replay attacks.

- CVE-2015-8139: Origin Leak: ntpq and ntpdc, disclose
origin.

- CVE-2015-5300, boo#951629: Small-step/Big-step.

- Add /var/db/ntp-kod (boo#916617).

- Add ntp-ENOBUFS.patch to limit a warning that might
happen quite a lot on loaded systems (boo#956773).

- add ntp.bug2965.diff (boo#954982)

- fixes regression in 4.2.8p4 update

- Update to 4.2.8p4 to fix several security issues
(boo#951608) :

- CVE-2015-7871: NAK to the Future: Symmetric association
authentication bypass via crypto-NAK

- CVE-2015-7855: decodenetnum() will ASSERT botch instead
of returning FAIL on some bogus values

- CVE-2015-7854: Password Length Memory Corruption
Vulnerability

- CVE-2015-7853: Invalid length data provided by a custom
refclock driver could cause a buffer overflow

- CVE-2015-7852 ntpq atoascii() Memory Corruption
Vulnerability

- CVE-2015-7851 saveconfig Directory Traversal
Vulnerability

- CVE-2015-7850 remote config logfile-keyfile

- CVE-2015-7849 trusted key use-after-free

- CVE-2015-7848 mode 7 loop counter underrun

- CVE-2015-7701 Slow memory leak in CRYPTO_ASSOC

- CVE-2015-7703 configuration directives 'pidfile' and
'driftfile' should only be allowed locally

- CVE-2015-7704, CVE-2015-7705 Clients that receive a KoD
should validate the origin timestamp field

- CVE-2015-7691, CVE-2015-7692, CVE-2015-7702 Incomplete
autokey data packet length checks

- obsoletes ntp-memlock.patch.

- Add a controlkey line to /etc/ntp.conf if one does not
already exist to allow runtime configuuration via ntpq.

- Temporarily disable memlock to avoid problems due to
high memory usage during name resolution (boo#946386,
ntp-memlock.patch).

- Use SHA1 instead of MD5 for symmetric keys (boo#905885).

- Improve runtime configuration :

- Read keytype from ntp.conf

- Don't write ntp keys to syslog.

- Fix legacy action scripts to pass on command line
arguments.

- Remove ntp.1.gz, it wasn't installed anymore.

- Remove ntp-4.2.7-rh-manpages.tar.gz and only keep
ntptime.8.gz. The rest is partially irrelevant,
partially redundant and potentially outdated
(boo#942587).

- Remove 'kod' from the restrict line in ntp.conf
(boo#944300).

- Use ntpq instead of deprecated ntpdc in start-ntpd
(boo#936327).

- Add a controlkey to ntp.conf to make the above work.

- Don't let 'keysdir' lines in ntp.conf trigger the 'keys'
parser.

- Disable mode 7 (ntpdc) again, now that we don't use it
anymore.

- Add 'addserver' as a new legacy action.

- Fix the comment regarding addserver in ntp.conf
(boo#910063).

- Update to version 4.2.8p3 which incorporates all
security fixes and most other patches we have so far
(fate#319040). More information on:
http://archive.ntp.org/ntp4/ChangeLog-stable

- Disable chroot by default (boo#926510).

- Enable ntpdc for backwards compatibility (boo#920238).

- Security fix: ntp-keygen may generate non-random
symmetric keys

See also :

http://archive.ntp.org/ntp4/ChangeLog-stable
https://bugzilla.opensuse.org/show_bug.cgi?id=782060
https://bugzilla.opensuse.org/show_bug.cgi?id=905885
https://bugzilla.opensuse.org/show_bug.cgi?id=910063
https://bugzilla.opensuse.org/show_bug.cgi?id=916617
https://bugzilla.opensuse.org/show_bug.cgi?id=920238
https://bugzilla.opensuse.org/show_bug.cgi?id=926510
https://bugzilla.opensuse.org/show_bug.cgi?id=936327
https://bugzilla.opensuse.org/show_bug.cgi?id=942587
https://bugzilla.opensuse.org/show_bug.cgi?id=944300
https://bugzilla.opensuse.org/show_bug.cgi?id=946386
https://bugzilla.opensuse.org/show_bug.cgi?id=951559
https://bugzilla.opensuse.org/show_bug.cgi?id=951608
https://bugzilla.opensuse.org/show_bug.cgi?id=951629
https://bugzilla.opensuse.org/show_bug.cgi?id=954982
https://bugzilla.opensuse.org/show_bug.cgi?id=956773
https://bugzilla.opensuse.org/show_bug.cgi?id=957226
https://bugzilla.opensuse.org/show_bug.cgi?id=962318
https://bugzilla.opensuse.org/show_bug.cgi?id=962784
https://bugzilla.opensuse.org/show_bug.cgi?id=962802
https://bugzilla.opensuse.org/show_bug.cgi?id=962960
https://bugzilla.opensuse.org/show_bug.cgi?id=962966
https://bugzilla.opensuse.org/show_bug.cgi?id=962970
https://bugzilla.opensuse.org/show_bug.cgi?id=962988
https://bugzilla.opensuse.org/show_bug.cgi?id=962995
https://bugzilla.opensuse.org/show_bug.cgi?id=963000
https://bugzilla.opensuse.org/show_bug.cgi?id=963002
https://bugzilla.opensuse.org/show_bug.cgi?id=975496
https://bugzilla.opensuse.org/show_bug.cgi?id=977446
https://bugzilla.opensuse.org/show_bug.cgi?id=977450
https://bugzilla.opensuse.org/show_bug.cgi?id=977451
https://bugzilla.opensuse.org/show_bug.cgi?id=977452
https://bugzilla.opensuse.org/show_bug.cgi?id=977455
https://bugzilla.opensuse.org/show_bug.cgi?id=977457
https://bugzilla.opensuse.org/show_bug.cgi?id=977458
https://bugzilla.opensuse.org/show_bug.cgi?id=977459
https://bugzilla.opensuse.org/show_bug.cgi?id=977461
https://bugzilla.opensuse.org/show_bug.cgi?id=977464
https://www.tenable.com/security/research/tra-2015-04

Solution :

Update the affected ntp packages.

Risk factor :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)