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openSUSE Security Update : ntp (openSUSE-2016-649)

critical Nessus Plugin ID 91403

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Synopsis

The remote openSUSE host is missing a security update.

Description

This update for ntp fixes the following issues :

- Update to 4.2.8p7 (boo#977446) :

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

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

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

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

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

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

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

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

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

- integrate ntp-fork.patch

- Improve the fixes for: CVE-2015-7704, CVE-2015-7705, CVE-2015-7974

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

- Enable compile-time support for MS-SNTP (--enable-ntp-signd). This replaces the w32 patches in 4.2.4 that added the authreg directive. (fate#320758).

- Fix ntp-sntp-dst.patch (boo#975496).

- Call /usr/sbin/sntp with full path to synchronize in start-ntpd. When run as cron job, /usr/sbin/ is not in the path, which caused the synchronization to fail.
(boo#962318)

- Speedup ntpq (boo#782060, ntp-speedup-ntpq.patch).

- Sync service files with openSUSE Factory.

- Fix the TZ offset output of sntp during DST (boo#951559).

- Add ntp-fork.patch and build with threads disabled to allow name resolution even when running chrooted.

- Update to 4.2.8p6 :

- CVE-2015-8158, boo#962966: Potential Infinite Loop in ntpq.

- CVE-2015-8138, boo#963002: origin: Zero Origin Timestamp Bypass.

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

- CVE-2015-7978, boo#963000: Stack exhaustion in recursive traversal of restriction list.

- CVE-2015-7977, boo#962970: reslist NULL pointer dereference.

- CVE-2015-7976, boo#962802: ntpq saveconfig command allows dangerous characters in filenames.

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

- CVE-2015-7974, boo#962960: Skeleton Key: Missing key check allows impersonation between authenticated peers.

- CVE-2015-7973, boo#962995: Deja Vu: Replay attack on authenticated broadcast mode.

- CVE-2015-8140: ntpq vulnerable to replay attacks.

- CVE-2015-8139: Origin Leak: ntpq and ntpdc, disclose origin.

- CVE-2015-5300, boo#951629: Small-step/Big-step.

- Add /var/db/ntp-kod (boo#916617).

- Add ntp-ENOBUFS.patch to limit a warning that might happen quite a lot on loaded systems (boo#956773).

- add ntp.bug2965.diff (boo#954982)

- fixes regression in 4.2.8p4 update

- Update to 4.2.8p4 to fix several security issues (boo#951608) :

- CVE-2015-7871: NAK to the Future: Symmetric association authentication bypass via crypto-NAK

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

- CVE-2015-7854: Password Length Memory Corruption Vulnerability

- CVE-2015-7853: Invalid length data provided by a custom refclock driver could cause a buffer overflow

- CVE-2015-7852 ntpq atoascii() Memory Corruption Vulnerability

- CVE-2015-7851 saveconfig Directory Traversal Vulnerability

- CVE-2015-7850 remote config logfile-keyfile

- CVE-2015-7849 trusted key use-after-free

- CVE-2015-7848 mode 7 loop counter underrun

- CVE-2015-7701 Slow memory leak in CRYPTO_ASSOC

- CVE-2015-7703 configuration directives 'pidfile' and 'driftfile' should only be allowed locally

- CVE-2015-7704, CVE-2015-7705 Clients that receive a KoD should validate the origin timestamp field

- CVE-2015-7691, CVE-2015-7692, CVE-2015-7702 Incomplete autokey data packet length checks

- obsoletes ntp-memlock.patch.

- Add a controlkey line to /etc/ntp.conf if one does not already exist to allow runtime configuuration via ntpq.

- Temporarily disable memlock to avoid problems due to high memory usage during name resolution (boo#946386, ntp-memlock.patch).

- Use SHA1 instead of MD5 for symmetric keys (boo#905885).

- Improve runtime configuration :

- Read keytype from ntp.conf

- Don't write ntp keys to syslog.

- Fix legacy action scripts to pass on command line arguments.

- Remove ntp.1.gz, it wasn't installed anymore.

- Remove ntp-4.2.7-rh-manpages.tar.gz and only keep ntptime.8.gz. The rest is partially irrelevant, partially redundant and potentially outdated (boo#942587).

- Remove 'kod' from the restrict line in ntp.conf (boo#944300).

- Use ntpq instead of deprecated ntpdc in start-ntpd (boo#936327).

- Add a controlkey to ntp.conf to make the above work.

- Don't let 'keysdir' lines in ntp.conf trigger the 'keys' parser.

- Disable mode 7 (ntpdc) again, now that we don't use it anymore.

- Add 'addserver' as a new legacy action.

- Fix the comment regarding addserver in ntp.conf (boo#910063).

- Update to version 4.2.8p3 which incorporates all security fixes and most other patches we have so far (fate#319040). More information on:
http://archive.ntp.org/ntp4/ChangeLog-stable

- Disable chroot by default (boo#926510).

- Enable ntpdc for backwards compatibility (boo#920238).

- Security fix: ntp-keygen may generate non-random symmetric keys

Solution

Update the affected ntp packages.

Plugin Details

Severity: Critical

ID: 91403

File Name: openSUSE-2016-649.nasl

Version: 2.17

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 6/1/2016

Updated: 1/19/2021

Supported Sensors: 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: 7.8

Temporal Score: 6.1

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

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:opensuse:ntp, p-cpe:/a:novell:opensuse:ntp-debuginfo, p-cpe:/a:novell:opensuse:ntp-debugsource, cpe:/o:novell:opensuse:13.2

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/27/2016

Reference Information

CVE: 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, 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

TRA: TRA-2015-04