Feeds

Excel Trojan targets unpatched flaws

Another day, another zero-day threat

Next gen security for virtualised datacentres

Virus authors have reportedly created a Trojan that exploits an unpatched vulnerability in a range of versions of Excel.

The malware comes in the form of a maliciously constructed spreadsheet file with a malicious payload identified by McAfee, for example, as the BackDoor-DUE trojan. Many versions of Excel are vulnerable, including 2000, 2002, 2003, 2007, 2004/2008 for Mac, Excel Viewer/Excel Viewer 2003.

Opening up an infected file using vulnerable software packages creates a backdoor. Attacks thus far are "very targeted and limited" and similar in this respect to malware targeting the also unpatched Adobe PDF flaw, McAfee reports.

Microsoft said it was investigating reports of the vulnerability and its exploitation, in a holding statement. It's a toss up at the time as to whether an out-of-sequence patch will follow or whether Microsoft elects to wait two weeks until the next scheduled Patch Tuesday update or (if fixing the flaw turns out to be (particularly tricky) even longer before releasing a patch.

In the meantime, users are urged to practice caution, especially about Excel files from untrusted sources. ®

The essential guide to IT transformation

More from The Register

next story
Goog says patch⁵⁰ your Chrome
64-bit browser loads cat vids FIFTEEN PERCENT faster!
Chinese hackers spied on investigators of Flight MH370 - report
Classified data on flight's disappearance pinched
NIST to sysadmins: clean up your SSH mess
Too many keys, too badly managed
Scratched PC-dispatch patch patched, hatched in batch rematch
Windows security update fixed after triggering blue screens (and screams) of death
Researchers camouflage haxxor traps with fake application traffic
Honeypots sweetened to resemble actual workloads, complete with 'secure' logins
Attack flogged through shiny-clicky social media buttons
66,000 users popped by malicious Flash fudging add-on
prev story

Whitepapers

Top 10 endpoint backup mistakes
Avoid the ten endpoint backup mistakes to ensure that your critical corporate data is protected and end user productivity is improved.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Backing up distributed data
Eliminating the redundant use of bandwidth and storage capacity and application consolidation in the modern data center.
The essential guide to IT transformation
ServiceNow discusses three IT transformations that can help CIOs automate IT services to transform IT and the enterprise
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.