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SUSE SLES11 Security Update : ntp (SUSE-SU-2016:1311-1)

critical Nessus Plugin ID 91248

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Synopsis

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

Description

This network time protocol server ntp was updated to 4.2.8p6 to fix the following issues :

Also yast2-ntp-client was updated to match some sntp syntax changes.
(bsc#937837)

Major functional changes :

- The 'sntp' commandline tool changed its option handling in a major way.

- 'controlkey 1' is added during update to ntp.conf to allow sntp to work.

- The local clock is being disabled during update.

- ntpd is no longer running chrooted.

Other functional changes :

- ntp-signd is installed.

- 'enable mode7' can be added to the configuration to allow ntdpc to work as compatibility mode option.

- 'kod' was removed from the default restrictions.

- SHA1 keys are used by default instead of MD5 keys.

These security issues were fixed :

- CVE-2015-5219: An endless loop due to incorrect precision to double conversion (bsc#943216).

- CVE-2015-8158: Fixed potential infinite loop in ntpq (bsc#962966).

- CVE-2015-8138: Zero Origin Timestamp Bypass (bsc#963002).

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

- CVE-2015-7978: Stack exhaustion in recursive traversal of restriction list (bsc#963000).

- CVE-2015-7977: reslist NULL pointer dereference (bsc#962970).

- CVE-2015-7976: ntpq saveconfig command allows dangerous characters in filenames (bsc#962802).

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

- CVE-2015-7974: Skeleton Key: Missing key check allows impersonation between authenticated peers (bsc#962960).

- CVE-2015-7973: Replay attack on authenticated broadcast mode (bsc#962995).

- CVE-2015-8140: ntpq vulnerable to replay attacks (bsc#962994).

- CVE-2015-8139: Origin Leak: ntpq and ntpdc, disclose origin (bsc#962997).

- CVE-2015-5300: MITM attacker could have forced ntpd to make a step larger than the panic threshold (bsc#951629).

- CVE-2015-7871: NAK to the Future: Symmetric association authentication bypass via crypto-NAK (bsc#951608).

- CVE-2015-7855: decodenetnum() will ASSERT botch instead of returning FAIL on some bogus values (bsc#951608).

- CVE-2015-7854: Password Length Memory Corruption Vulnerability (bsc#951608).

- CVE-2015-7853: Invalid length data provided by a custom refclock driver could cause a buffer overflow (bsc#951608).

- CVE-2015-7852: ntpq atoascii() Memory Corruption Vulnerability (bsc#951608).

- CVE-2015-7851: saveconfig Directory Traversal Vulnerability (bsc#951608).

- CVE-2015-7850: remote config logfile-keyfile (bsc#951608).

- CVE-2015-7849: trusted key use-after-free (bsc#951608).

- CVE-2015-7848: mode 7 loop counter underrun (bsc#951608).

- CVE-2015-7701: Slow memory leak in CRYPTO_ASSOC (bsc#951608).

- CVE-2015-7703: configuration directives 'pidfile' and 'driftfile' should only be allowed locally (bsc#951608).

- CVE-2015-7704, CVE-2015-7705: Clients that receive a KoD should validate the origin timestamp field (bsc#951608).

- CVE-2015-7691, CVE-2015-7692, CVE-2015-7702: Incomplete autokey data packet length checks (bsc#951608).

The update package also includes non-security fixes. See advisory for details.

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 OpenStack Cloud 5 :

zypper in -t patch sleclo50sp3-ntp-12561=1

SUSE Manager Proxy 2.1 :

zypper in -t patch slemap21-ntp-12561=1

SUSE Manager 2.1 :

zypper in -t patch sleman21-ntp-12561=1

SUSE Linux Enterprise Server 11-SP3-LTSS :

zypper in -t patch slessp3-ntp-12561=1

SUSE Linux Enterprise Server 11-SP2-LTSS :

zypper in -t patch slessp2-ntp-12561=1

SUSE Linux Enterprise Debuginfo 11-SP3 :

zypper in -t patch dbgsp3-ntp-12561=1

SUSE Linux Enterprise Debuginfo 11-SP2 :

zypper in -t patch dbgsp2-ntp-12561=1

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

Plugin Details

Severity: Critical

ID: 91248

File Name: suse_SU-2016-1311-1.nasl

Version: 2.20

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 5/19/2016

Updated: 1/19/2021

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

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

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:ntp, p-cpe:/a:novell:suse_linux:ntp-doc, cpe:/o:novell:suse_linux:11

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/17/2016

Vulnerability Publication Date: 1/26/2016

Reference Information

CVE: CVE-2015-5194, CVE-2015-5219, CVE-2015-5300, CVE-2015-7691, CVE-2015-7692, CVE-2015-7701, CVE-2015-7702, CVE-2015-7703, CVE-2015-7704, CVE-2015-7705, CVE-2015-7848, CVE-2015-7849, CVE-2015-7850, CVE-2015-7851, CVE-2015-7852, CVE-2015-7853, CVE-2015-7854, CVE-2015-7855, CVE-2015-7871, CVE-2015-7973, CVE-2015-7974, CVE-2015-7975, CVE-2015-7976, CVE-2015-7977, CVE-2015-7978, CVE-2015-7979, CVE-2015-8138, CVE-2015-8139, CVE-2015-8140, CVE-2015-8158

TRA: TRA-2015-04