SUSE-SU-2018:1765-2: moderate: Security update for ntp

[sle-security-updates at lists.suse.com]

   SUSE Security Update: Security update for ntp
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Announcement ID:    SUSE-SU-2018:1765-2
Rating:             moderate
References:         #1077445 #1082063 #1082210 #1083417 #1083420 
                    #1083422 #1083424 #1083426 
Cross-References:   CVE-2016-1549 CVE-2018-7170 CVE-2018-7182
                    CVE-2018-7183 CVE-2018-7184 CVE-2018-7185
                   
Affected Products:
                    SUSE Linux Enterprise Server 12-SP2-BCL
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   An update that solves 6 vulnerabilities and has two fixes
   is now available.

Description:

   This update for ntp fixes the following issues:

   - Update to 4.2.8p11 (bsc#1082210):
     * CVE-2016-1549: Sybil vulnerability: ephemeral association attack.
       While fixed in ntp-4.2.8p7, there are significant additional
       protections for this issue in 4.2.8p11.
     * CVE-2018-7182: ctl_getitem(): buffer read overrun leads to undefined
       behavior and information leak. (bsc#1083426)
     * CVE-2018-7170: Multiple authenticated ephemeral associations.
       (bsc#1083424)
     * CVE-2018-7184: Interleaved symmetric mode cannot recover from bad
       state. (bsc#1083422)
     * CVE-2018-7185: Unauthenticated packet can reset authenticated
       interleaved association. (bsc#1083420)
     * CVE-2018-7183: ntpq:decodearr() can write beyond its buffer
       limit.(bsc#1083417)
   - Don't use libevent's cached time stamps in sntp. (bsc#1077445)

   This update is a reissue of the previous update with LTSS channels
   included.


Patch Instructions:

   To install this SUSE 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:

   - SUSE Linux Enterprise Server 12-SP2-BCL:

      zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2018-1188=1



Package List:

   - SUSE Linux Enterprise Server 12-SP2-BCL (x86_64):

      ntp-4.2.8p11-64.5.1
      ntp-debuginfo-4.2.8p11-64.5.1
      ntp-debugsource-4.2.8p11-64.5.1
      ntp-doc-4.2.8p11-64.5.1


References:

   https://www.suse.com/security/cve/CVE-2016-1549.html
   https://www.suse.com/security/cve/CVE-2018-7170.html
   https://www.suse.com/security/cve/CVE-2018-7182.html
   https://www.suse.com/security/cve/CVE-2018-7183.html
   https://www.suse.com/security/cve/CVE-2018-7184.html
   https://www.suse.com/security/cve/CVE-2018-7185.html
   https://bugzilla.suse.com/1077445
   https://bugzilla.suse.com/1082063
   https://bugzilla.suse.com/1082210
   https://bugzilla.suse.com/1083417
   https://bugzilla.suse.com/1083420
   https://bugzilla.suse.com/1083422
   https://bugzilla.suse.com/1083424
   https://bugzilla.suse.com/1083426