SUSE SLED11 / SLES11 Security Update : ntp (SUSE-SU-2015:2058-1)

This script is Copyright (C) 2015-2017 Tenable Network Security, Inc.


Synopsis :

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

Description :

This ntp update provides the following security and non security
fixes :

- Update to 4.2.8p4 to fix several security issues
(bsc#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

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

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

- Improve runtime configuration :

- Read keytype from ntp.conf

- Don't write ntp keys to syslog.

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

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

- 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partially redundant and potentially outdated
(bsc#942587).

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

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

- Require perl-Socket6 (bsc#942441).

- Fix incomplete backporting of 'rcntp ntptimemset'.

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.

See also :

https://bugzilla.suse.com/905885
https://bugzilla.suse.com/910063
https://bugzilla.suse.com/936327
https://bugzilla.suse.com/942441
https://bugzilla.suse.com/942587
https://bugzilla.suse.com/944300
https://bugzilla.suse.com/951608
https://www.suse.com/security/cve/CVE-2015-7691.html
https://www.suse.com/security/cve/CVE-2015-7692.html
https://www.suse.com/security/cve/CVE-2015-7701.html
https://www.suse.com/security/cve/CVE-2015-7702.html
https://www.suse.com/security/cve/CVE-2015-7703.html
https://www.suse.com/security/cve/CVE-2015-7704.html
https://www.suse.com/security/cve/CVE-2015-7705.html
https://www.suse.com/security/cve/CVE-2015-7848.html
https://www.suse.com/security/cve/CVE-2015-7849.html
https://www.suse.com/security/cve/CVE-2015-7850.html
https://www.suse.com/security/cve/CVE-2015-7851.html
https://www.suse.com/security/cve/CVE-2015-7852.html
https://www.suse.com/security/cve/CVE-2015-7853.html
https://www.suse.com/security/cve/CVE-2015-7854.html
https://www.suse.com/security/cve/CVE-2015-7855.html
https://www.suse.com/security/cve/CVE-2015-7871.html
http://www.nessus.org/u?b9441511
https://www.tenable.com/security/research/tra-2015-04

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 11-SP4 :

zypper in -t patch slessp4-ntp-12218=1

SUSE Linux Enterprise Desktop 11-SP4 :

zypper in -t patch sledsp4-ntp-12218=1

SUSE Linux Enterprise Debuginfo 11-SP4 :

zypper in -t patch dbgsp4-ntp-12218=1

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

Risk factor :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 6.4
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Ready to Amp Up Your Nessus Experience?

Get Nessus Professional to scan unlimited IPs, run compliance checks & more

Buy Nessus Professional Now