SUSE SLES11 Security Update : ntp (SUSE-SU-2016:1175-1)

This script is Copyright (C) 2016-2017 Tenable Network Security, Inc.


Synopsis :

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

Description :

ntp was updated to version 4.2.8p6 to fix 12 security issues.

These security issues were fixed :

- 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).

These non-security issues were fixed :

- fate#320758 bsc#975981: Enable compile-time support for
MS-SNTP (--enable-ntp-signd). This replaces the w32
patches in 4.2.4 that added the authreg directive.

- bsc#962318: 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.

- bsc#782060: Speedup ntpq.

- bsc#916617: Add /var/db/ntp-kod.

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

- bsc#951559,bsc#975496: Fix the TZ offset output of sntp
during DST.

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

- bsc#784760: Remove local clock from default
configuration

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/782060
https://bugzilla.suse.com/784760
https://bugzilla.suse.com/916617
https://bugzilla.suse.com/951559
https://bugzilla.suse.com/951629
https://bugzilla.suse.com/956773
https://bugzilla.suse.com/962318
https://bugzilla.suse.com/962784
https://bugzilla.suse.com/962802
https://bugzilla.suse.com/962960
https://bugzilla.suse.com/962966
https://bugzilla.suse.com/962970
https://bugzilla.suse.com/962988
https://bugzilla.suse.com/962994
https://bugzilla.suse.com/962995
https://bugzilla.suse.com/962997
https://bugzilla.suse.com/963000
https://bugzilla.suse.com/963002
https://bugzilla.suse.com/975496
https://bugzilla.suse.com/975981
https://www.suse.com/security/cve/CVE-2015-5300.html
https://www.suse.com/security/cve/CVE-2015-7973.html
https://www.suse.com/security/cve/CVE-2015-7974.html
https://www.suse.com/security/cve/CVE-2015-7975.html
https://www.suse.com/security/cve/CVE-2015-7976.html
https://www.suse.com/security/cve/CVE-2015-7977.html
https://www.suse.com/security/cve/CVE-2015-7978.html
https://www.suse.com/security/cve/CVE-2015-7979.html
https://www.suse.com/security/cve/CVE-2015-8138.html
https://www.suse.com/security/cve/CVE-2015-8139.html
https://www.suse.com/security/cve/CVE-2015-8140.html
https://www.suse.com/security/cve/CVE-2015-8158.html
http://www.nessus.org/u?8dd6cc80

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-12533=1

SUSE Linux Enterprise Debuginfo 11-SP4 :

zypper in -t patch dbgsp4-ntp-12533=1

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

Risk factor :

Medium / CVSS Base Score : 5.8
(CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:P)
CVSS Temporal Score : 4.3
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

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