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slackwareSlackware Linux ProjectSSA-2016-120-01
HistoryApr 29, 2016 - 9:57 p.m.

[slackware-security] ntp

2016-04-2921:57:25
Slackware Linux Project
www.slackware.com
21

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.1 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:N/I:N/A:C

0.873 High

EPSS

Percentile

98.6%

New ntp packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1,
and -current to fix security issues.

Here are the details from the Slackware 14.1 ChangeLog:

patches/packages/ntp-4.2.8p7-i486-1_slack14.1.txz: Upgraded.
This release patches several low and medium severity security issues:
CVE-2016-1551: Refclock impersonation vulnerability, AKA: refclock-peering
CVE-2016-1549: Sybil vulnerability: ephemeral association attack,
AKA: ntp-sybil - MITIGATION ONLY
CVE-2016-2516: Duplicate IPs on unconfig directives will cause an assertion
botch
CVE-2016-2517: Remote configuration trustedkey/requestkey values are not
properly validated
CVE-2016-2518: Crafted addpeer with hmode > 7 causes array wraparound with
MATCH_ASSOC
CVE-2016-2519: ctl_getitem() return value not always checked
CVE-2016-1547: Validate crypto-NAKs, AKA: nak-dos
CVE-2016-1548: Interleave-pivot - MITIGATION ONLY
CVE-2015-7704: KoD fix: peer associations were broken by the fix for
NtpBug2901, AKA: Symmetric active/passive mode is broken
CVE-2015-8138: Zero Origin Timestamp Bypass, AKA: Additional KoD Checks
CVE-2016-1550: Improve NTP security against buffer comparison timing attacks,
authdecrypt-timing, AKA: authdecrypt-timing
For more information, see:
http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities
https://vulners.com/cve/CVE-2015-7704
https://vulners.com/cve/CVE-2015-8138
https://vulners.com/cve/CVE-2016-1547
https://vulners.com/cve/CVE-2016-1548
https://vulners.com/cve/CVE-2016-1549
https://vulners.com/cve/CVE-2016-1550
https://vulners.com/cve/CVE-2016-1551
https://vulners.com/cve/CVE-2016-2516
https://vulners.com/cve/CVE-2016-2517
https://vulners.com/cve/CVE-2016-2518
https://vulners.com/cve/CVE-2016-2519
(* Security fix *)

Where to find the new packages:

Thanks to the friendly folks at the OSU Open Source Lab
(http://osuosl.org) for donating FTP and rsync hosting
to the Slackware project! :-)

Also see the “Get Slack” section on http://slackware.com for
additional mirror sites near you.

Updated package for Slackware 13.0:
ftp://ftp.slackware.com/pub/slackware/slackware-13.0/patches/packages/ntp-4.2.8p7-i486-1_slack13.0.txz

Updated package for Slackware x86_64 13.0:
ftp://ftp.slackware.com/pub/slackware/slackware64-13.0/patches/packages/ntp-4.2.8p7-x86_64-1_slack13.0.txz

Updated package for Slackware 13.1:
ftp://ftp.slackware.com/pub/slackware/slackware-13.1/patches/packages/ntp-4.2.8p7-i486-1_slack13.1.txz

Updated package for Slackware x86_64 13.1:
ftp://ftp.slackware.com/pub/slackware/slackware64-13.1/patches/packages/ntp-4.2.8p7-x86_64-1_slack13.1.txz

Updated package for Slackware 13.37:
ftp://ftp.slackware.com/pub/slackware/slackware-13.37/patches/packages/ntp-4.2.8p7-i486-1_slack13.37.txz

Updated package for Slackware x86_64 13.37:
ftp://ftp.slackware.com/pub/slackware/slackware64-13.37/patches/packages/ntp-4.2.8p7-x86_64-1_slack13.37.txz

Updated package for Slackware 14.0:
ftp://ftp.slackware.com/pub/slackware/slackware-14.0/patches/packages/ntp-4.2.8p7-i486-1_slack14.0.txz

Updated package for Slackware x86_64 14.0:
ftp://ftp.slackware.com/pub/slackware/slackware64-14.0/patches/packages/ntp-4.2.8p7-x86_64-1_slack14.0.txz

Updated package for Slackware 14.1:
ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/ntp-4.2.8p7-i486-1_slack14.1.txz

Updated package for Slackware x86_64 14.1:
ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/ntp-4.2.8p7-x86_64-1_slack14.1.txz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/ntp-4.2.8p7-i586-1.txz

Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/ntp-4.2.8p7-x86_64-1.txz

MD5 signatures:

Slackware 13.0 package:
785dc2ef5f80edb28dc781e261c3fe3f ntp-4.2.8p7-i486-1_slack13.0.txz

Slackware x86_64 13.0 package:
899421096b7b63e6cb269f8b01dfd875 ntp-4.2.8p7-x86_64-1_slack13.0.txz

Slackware 13.1 package:
dfd34cbd31be3572a2bcae7f59cdfd91 ntp-4.2.8p7-i486-1_slack13.1.txz

Slackware x86_64 13.1 package:
63c4b31736040e7950361cd0d7081c8b ntp-4.2.8p7-x86_64-1_slack13.1.txz

Slackware 13.37 package:
e760ae0c6cc3fa933e4d65d6995b0c84 ntp-4.2.8p7-i486-1_slack13.37.txz

Slackware x86_64 13.37 package:
aa448523b27bb4fcccc2f46cf4d72bc5 ntp-4.2.8p7-x86_64-1_slack13.37.txz

Slackware 14.0 package:
3bc7e54a4164a4f91be996b5cf2e643e ntp-4.2.8p7-i486-1_slack14.0.txz

Slackware x86_64 14.0 package:
0f6ea4dae476709f26f5d0e33378576c ntp-4.2.8p7-x86_64-1_slack14.0.txz

Slackware 14.1 package:
dbe827ee7ece6ce5ca083cdd5960162c ntp-4.2.8p7-i486-1_slack14.1.txz

Slackware x86_64 14.1 package:
89f3edf183a6a9847d69b8349f98c901 ntp-4.2.8p7-x86_64-1_slack14.1.txz

Slackware -current package:
4018b86edd15e40e8c5e9f50d907dcff n/ntp-4.2.8p7-i586-1.txz

Slackware x86_64 -current package:
7dd6b64ba8c9fdaebb7becc1f5c3963d n/ntp-4.2.8p7-x86_64-1.txz

Installation instructions:

Upgrade the package as root:
> upgradepkg ntp-4.2.8p7-i486-1_slack14.1.txz

Then, restart the NTP daemon:

> sh /etc/rc.d/rc.ntpd restart

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.1 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:N/I:N/A:C

0.873 High

EPSS

Percentile

98.6%