SUSE Security Update: Security update for ntp
______________________________________________________________________________

Announcement ID:    SUSE-SU-2016:1568-1
Rating:             important
References:         #957226 #962960 #977450 #977451 #977452 #977455 
                    #977457 #977458 #977459 #977461 #977464 #979302 
                    #979981 #981422 #982064 #982065 #982066 #982067 
                    #982068 
Cross-References:   CVE-2015-7704 CVE-2015-7705 CVE-2015-7974
                    CVE-2016-1547 CVE-2016-1548 CVE-2016-1549
                    CVE-2016-1550 CVE-2016-1551 CVE-2016-2516
                    CVE-2016-2517 CVE-2016-2518 CVE-2016-2519
                    CVE-2016-4953 CVE-2016-4954 CVE-2016-4955
                    CVE-2016-4956 CVE-2016-4957
Affected Products:
                    SUSE Linux Enterprise Server 12
                    SUSE Linux Enterprise Desktop 12
______________________________________________________________________________

   An update that solves 17 vulnerabilities and has two fixes
   is now available.

Description:

   ntp was updated to version 4.2.8p8 to fix 17 security issues.

   These security issues were fixed:
   - CVE-2016-4956: Broadcast interleave (bsc#982068).
   - CVE-2016-2518: Crafted addpeer with hmode > 7 causes array wraparound
     with MATCH_ASSOC (bsc#977457).
   - CVE-2016-2519: ctl_getitem() return value not always checked
     (bsc#977458).
   - CVE-2016-4954: Processing spoofed server packets (bsc#982066).
   - CVE-2016-4955: Autokey association reset (bsc#982067).
   - CVE-2015-7974: NTP did not verify peer associations of symmetric keys
     when authenticating packets, which might allowed remote attackers to
     conduct impersonation attacks via an arbitrary trusted key, aka a
     "skeleton key (bsc#962960).
   - CVE-2016-4957: CRYPTO_NAK crash (bsc#982064).
   - CVE-2016-2516: Duplicate IPs on unconfig directives will cause an
     assertion botch (bsc#977452).
   - CVE-2016-2517: Remote configuration trustedkey/requestkey values are not
     properly validated (bsc#977455).
   - CVE-2016-4953: Bad authentication demobilizes ephemeral associations
     (bsc#982065).
   - CVE-2016-1547: CRYPTO-NAK DoS (bsc#977459).
   - CVE-2016-1551: Refclock impersonation vulnerability, AKA:
     refclock-peering (bsc#977450).
   - CVE-2016-1550: Improve NTP security against buffer comparison timing
     attacks, authdecrypt-timing, AKA: authdecrypt-timing (bsc#977464).
   - CVE-2016-1548: Interleave-pivot - MITIGATION ONLY (bsc#977461).
   - CVE-2016-1549: Sybil vulnerability: ephemeral association attack, AKA:
     ntp-sybil - MITIGATION ONLY (bsc#977451).

   This release also contained improved patches for CVE-2015-7704,
   CVE-2015-7705, CVE-2015-7974.

   These non-security issues were fixed:
   - bsc#979302: Change the process name of the forking DNS worker process to
     avoid the impression that ntpd is started twice.
   - bsc#981422: Don't ignore SIGCHILD because it breaks wait().
   - bsc#979981: ntp-wait does not accept fractional seconds, so use 1
     instead of 0.2 in ntp-wait.service.
   - Separate the creation of ntp.keys and key #1 in it to avoid problems
     when upgrading installations that have the file, but no key #1, which is
     needed e.g. by "rcntp addserver".
   - bsc#957226: Restrict the parser in the startup script to the first
     occurrance of "keys" and "controlkey" in ntp.conf.


Patch Instructions:

   To install this SUSE Security Update use YaST online_update.
   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Server 12:

      zypper in -t patch SUSE-SLE-SERVER-12-2016-933=1

   - SUSE Linux Enterprise Desktop 12:

      zypper in -t patch SUSE-SLE-DESKTOP-12-2016-933=1

   To bring your system up-to-date, use "zypper patch".


Package List:

   - SUSE Linux Enterprise Server 12 (ppc64le s390x x86_64):

      ntp-4.2.8p8-46.8.1
      ntp-debuginfo-4.2.8p8-46.8.1
      ntp-debugsource-4.2.8p8-46.8.1
      ntp-doc-4.2.8p8-46.8.1

   - SUSE Linux Enterprise Desktop 12 (x86_64):

      ntp-4.2.8p8-46.8.1
      ntp-debuginfo-4.2.8p8-46.8.1
      ntp-debugsource-4.2.8p8-46.8.1
      ntp-doc-4.2.8p8-46.8.1


References:

   https://www.suse.com/security/cve/CVE-2015-7704.html
   https://www.suse.com/security/cve/CVE-2015-7705.html
   https://www.suse.com/security/cve/CVE-2015-7974.html
   https://www.suse.com/security/cve/CVE-2016-1547.html
   https://www.suse.com/security/cve/CVE-2016-1548.html
   https://www.suse.com/security/cve/CVE-2016-1549.html
   https://www.suse.com/security/cve/CVE-2016-1550.html
   https://www.suse.com/security/cve/CVE-2016-1551.html
   https://www.suse.com/security/cve/CVE-2016-2516.html
   https://www.suse.com/security/cve/CVE-2016-2517.html
   https://www.suse.com/security/cve/CVE-2016-2518.html
   https://www.suse.com/security/cve/CVE-2016-2519.html
   https://www.suse.com/security/cve/CVE-2016-4953.html
   https://www.suse.com/security/cve/CVE-2016-4954.html
   https://www.suse.com/security/cve/CVE-2016-4955.html
   https://www.suse.com/security/cve/CVE-2016-4956.html
   https://www.suse.com/security/cve/CVE-2016-4957.html
   https://bugzilla.suse.com/957226
   https://bugzilla.suse.com/962960
   https://bugzilla.suse.com/977450
   https://bugzilla.suse.com/977451
   https://bugzilla.suse.com/977452
   https://bugzilla.suse.com/977455
   https://bugzilla.suse.com/977457
   https://bugzilla.suse.com/977458
   https://bugzilla.suse.com/977459
   https://bugzilla.suse.com/977461
   https://bugzilla.suse.com/977464
   https://bugzilla.suse.com/979302
   https://bugzilla.suse.com/979981
   https://bugzilla.suse.com/981422
   https://bugzilla.suse.com/982064
   https://bugzilla.suse.com/982065
   https://bugzilla.suse.com/982066
   https://bugzilla.suse.com/982067
   https://bugzilla.suse.com/982068

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