Security Market Segment LS
Tuesday, 23 December 2014 12:01

Apple fixes NTP in time for Christmas


Apple has issued a fix for vulnerabilities in OS X's handling of the Network Time Protocol.

Acting on information provided by the Google Security Team, Apple has released a security update for the OS X ntpd (Network Time Protocol daemon).

The update addresses "several issues" that allowed attackers to trigger buffer overflows in order to execute buffer overflows.

OS X NTP Security Update applies to Yosemite, Mavericks and Mountain Lion, and can be installed via the Mac App Store.

Since Apple's de facto policy is to only provide security updates for the current and two previous versions of the Mac's operating system, it is not clear whether the vulnerabilities are present in Lion or Snow Leopard. The latter is still being used by some Mac owners as it was the last version of OS X to support PowerPC applications.

According to CERT, the vulnerabilities are found in "ntpd version 4.2.7 and previous versions" so it would seem wise to assume all versions of OS X are affected.

At this stage it is not known what measures should be taken by users of Lion and earlier versions. Deactivating the "Set date and time automatically" option in the Date & Time preference appears to stop ntpd, but there may be situations where not having an accurately-set clock causes problems.

It is possible that someone will release a build of's ntpd 4.2.8 that can be easily installed - but how will you know whether you can trust their work?

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Now’s the Time for 400G Migration

The optical fibre community is anxiously awaiting the benefits that 400G capacity per wavelength will bring to existing and future fibre optic networks.

Nearly every business wants to leverage the latest in digital offerings to remain competitive in their respective markets and to provide support for fast and ever-increasing demands for data capacity. 400G is the answer.

Initial challenges are associated with supporting such project and upgrades to fulfil the promise of higher-capacity transport.

The foundation of optical networking infrastructure includes coherent optical transceivers and digital signal processing (DSP), mux/demux, ROADM, and optical amplifiers, all of which must be able to support 400G capacity.

With today’s proprietary power-hungry and high cost transceivers and DSP, how is migration to 400G networks going to be a viable option?

PacketLight's next-generation standardised solutions may be the answer. Click below to read the full article.


WEBINAR PROMOTION ON ITWIRE: It's all about webinars

These days our customers Advertising & Marketing campaigns are mainly focussed on webinars.

If you wish to promote a Webinar we recommend at least a 2 week campaign prior to your event.

The iTWire campaign will include extensive adverts on our News Site and prominent Newsletter promotion and Promotional News & Editorial.

This coupled with the new capabilities 5G brings opens up huge opportunities for both network operators and enterprise organisations.

We have a Webinar Business Booster Pack and other supportive programs.

We look forward to discussing your campaign goals with you.


Stephen Withers

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Stephen Withers is one of Australia¹s most experienced IT journalists, having begun his career in the days of 8-bit 'microcomputers'. He covers the gamut from gadgets to enterprise systems. In previous lives he has been an academic, a systems programmer, an IT support manager, and an online services manager. Stephen holds an honours degree in Management Sciences and a PhD in Industrial and Business Studies.

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