Security update for ntp

Announcement ID: SUSE-SU-2016:1568-1
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2015-7704 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2015-7705 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2015-7974 ( NVD ): 7.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
  • CVE-2016-1547 ( NVD ): 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  • CVE-2016-1548 ( NVD ): 7.2 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L
  • CVE-2016-1549 ( NVD ): 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
  • CVE-2016-1550 ( NVD ): 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  • CVE-2016-1551 ( NVD ): 3.7 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
  • CVE-2016-2516 ( NVD ): 5.3 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
  • CVE-2016-2517 ( NVD ): 5.3 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
  • CVE-2016-2518 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  • CVE-2016-2518 ( NVD ): 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  • CVE-2016-2519 ( NVD ): 5.9 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2016-4953 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2016-4953 ( NVD ): 4.0 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:L
  • CVE-2016-4954 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2016-4954 ( NVD ): 4.0 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:L
  • CVE-2016-4955 ( NVD ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2016-4955 ( NVD ): 4.0 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:L
  • CVE-2016-4956 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  • CVE-2016-4956 ( NVD ): 5.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
  • CVE-2016-4957 ( NVD ): 8.6 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Affected Products:
  • SUSE Linux Enterprise Desktop 12
  • SUSE Linux Enterprise Server 12
  • SUSE Linux Enterprise Server for SAP Applications 12

An update that solves 17 vulnerabilities and has two security fixes can now be installed.

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 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 Desktop 12
    zypper in -t patch SUSE-SLE-DESKTOP-12-2016-933=1
  • SUSE Linux Enterprise Server 12
    zypper in -t patch SUSE-SLE-SERVER-12-2016-933=1
  • SUSE Linux Enterprise Server for SAP Applications 12
    zypper in -t patch SUSE-SLE-SERVER-12-2016-933=1

Package List:

  • SUSE Linux Enterprise Desktop 12 (x86_64)
    • ntp-doc-4.2.8p8-46.8.1
    • ntp-debuginfo-4.2.8p8-46.8.1
    • ntp-debugsource-4.2.8p8-46.8.1
    • ntp-4.2.8p8-46.8.1
  • SUSE Linux Enterprise Server 12 (ppc64le s390x x86_64)
    • ntp-doc-4.2.8p8-46.8.1
    • ntp-debuginfo-4.2.8p8-46.8.1
    • ntp-debugsource-4.2.8p8-46.8.1
    • ntp-4.2.8p8-46.8.1
  • SUSE Linux Enterprise Server for SAP Applications 12 (x86_64)
    • ntp-doc-4.2.8p8-46.8.1
    • ntp-debuginfo-4.2.8p8-46.8.1
    • ntp-debugsource-4.2.8p8-46.8.1
    • ntp-4.2.8p8-46.8.1

References: