SUSE SLED12 / SLES12 Security Update : ntp (SUSE-SU-2016:1291-1)

critical Nessus Plugin ID 91159
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote SUSE host is missing one or more security updates.

Description

This update for ntp to 4.2.8p7 fixes the following issues :

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

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

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

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

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

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

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

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

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

- This update also improves the fixes for: CVE-2015-7704, CVE-2015-7705, CVE-2015-7974

Bugs fixed :

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

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

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-SP1 :

zypper in -t patch SUSE-SLE-SERVER-12-SP1-2016-764=1

SUSE Linux Enterprise Desktop 12-SP1 :

zypper in -t patch SUSE-SLE-DESKTOP-12-SP1-2016-764=1

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

See Also

https://bugzilla.suse.com/show_bug.cgi?id=957226

https://bugzilla.suse.com/show_bug.cgi?id=977446

https://bugzilla.suse.com/show_bug.cgi?id=977450

https://bugzilla.suse.com/show_bug.cgi?id=977451

https://bugzilla.suse.com/show_bug.cgi?id=977452

https://bugzilla.suse.com/show_bug.cgi?id=977455

https://bugzilla.suse.com/show_bug.cgi?id=977457

https://bugzilla.suse.com/show_bug.cgi?id=977458

https://bugzilla.suse.com/show_bug.cgi?id=977459

https://bugzilla.suse.com/show_bug.cgi?id=977461

https://bugzilla.suse.com/show_bug.cgi?id=977464

https://www.suse.com/security/cve/CVE-2015-7704/

https://www.suse.com/security/cve/CVE-2015-7705/

https://www.suse.com/security/cve/CVE-2015-7974/

https://www.suse.com/security/cve/CVE-2016-1547/

https://www.suse.com/security/cve/CVE-2016-1548/

https://www.suse.com/security/cve/CVE-2016-1549/

https://www.suse.com/security/cve/CVE-2016-1550/

https://www.suse.com/security/cve/CVE-2016-1551/

https://www.suse.com/security/cve/CVE-2016-2516/

https://www.suse.com/security/cve/CVE-2016-2517/

https://www.suse.com/security/cve/CVE-2016-2518/

https://www.suse.com/security/cve/CVE-2016-2519/

http://www.nessus.org/u?02d6c9df

Plugin Details

Severity: Critical

ID: 91159

File Name: suse_SU-2016-1291-1.nasl

Version: 2.17

Type: local

Agent: unix

Published: 5/16/2016

Updated: 1/6/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:ntp, p-cpe:/a:novell:suse_linux:ntp-debuginfo, p-cpe:/a:novell:suse_linux:ntp-debugsource, p-cpe:/a:novell:suse_linux:ntp-doc, cpe:/o:novell:suse_linux:12

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 5/12/2016

Vulnerability Publication Date: 1/26/2016

Reference Information

CVE: 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