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02.25.09

Confirmed: Microsoft OOXML a Security Hazard

Posted in Formats, Google, Microsoft, Open XML, OpenOffice, Security at 1:58 pm by Dr. Roy Schestowitz

flickr:2400867976

SEVERAL MONTHS ago we warned that OOXML is not secure. Its dependence on a particular platform and office suite rendered it insecure by design just like those ‘origin’ formats, namely binaries, which it merely shuffled around (reassembled).

It is now official and also confirmed that OOXML files are not just insecure but there are also persistent attacks against new flaws (without any security patches being available, i.e. zero-day). To quote one of the more recent reports:

Some Open XML based products as Microsoft Excel are affected by a security flaw and the Trojan.Mdropper.AC.

There is fairly wide coverage of this problem, e.g. in:

Microsoft’s Excel spreadsheet program has a 0-day vulnerability that attackers are exploiting on the Internet, according to security vendor Symantec.

A 0-day vulnerability is one that does not have a patch and is actively being used to attack computers when it is publicly revealed.

Heise Online calls this vulnerability “critical” (highest level of severity by another one Microsoft’s ‘standards’).

According to unconfirmed reports, the anti-virus manufacturer Symantec has found a trojan that seems to use a security hole in Microsoft Excel to remotely execute code on a user’s system. The attack is triggered by opening a maliciously crafted Excel file, causing an unspecified remote code-execution vulnerability.

One reader points out that “Microsoft is continuing its war against a universal office format.

“Notice in particular: ‘will be unable to open Office 2003 files or earlier versions in Office 2003 or 2007 Microsoft Office System

“What kind of hell is this causing in agencies, big businesses and schools? It’s not like they don’t have or could live with out the terabytes of electronic records now locked out by the kludge outlined above.”

Such problems could first be seen a year ago when Microsoft’s OOXML crimes were still prevalent. To make matters worse, Microsoft will continue to drift further away from ECMA OOXML, probably to gravitate in its own proprietary direction. Office 14, for example, is not committed to any real standards and according to yesterday’s report from Mary Jo Foley, it’s already delayed anyway.

Ballmer: Office 14 not this year

[...]

However, last year, more than a few times execs slipped up and indicated Office 14 would ship in 2009.

Things are not working well for Redmond these days. For real profit, Microsoft is highly dependent on Office which is its most profitable product (and one of the few that are actually profitable). Unless Microsoft can reinforce planned obsolescence and convince people to buy an upgrade they do not need, there’s great trouble ahead. The economic meltdown does not help.

OpenOffice.org makes a remarkably familiar substitute and Google Apps, among other SaaS alternatives, gain momentum despite the slew of disinformation from former Microsoft employees (masquerading as research firms).

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