Feeds

Exploit Wednesday follows Patch Tuesday Word update

Action adds to malicious reaction

The essential guide to IT transformation

The trend for exploiting vulnerabilities around the same time as Microsoft's monthly Patch Tuesday update continues.

Hackers have crafted a new Word exploit based on a memory corruption vulnerability addressed by Microsoft on Tuesday. The flaw was already exploited prior to the release of the fix, according to Microsoft.

Until this week the critical flaw had only been exploited in targeted attacks, but it's now getting wider play.

Symantec reports that the vulnerability is now being exploited in more widespread attacks. Malformed Word documents doing the rounds contain shell code and three pieces of malware. The malware package is unusual in that it was created using the Word for Macintosh format instead of the standard Windows (OLE) format.

Despite the formating, the malicious Word documents are actually targeted at infecting Windows PCs, according to a preliminary analysis by Symantec.

Detection against the malware - dubbed the Mdropper-Z Trojan - has been added to Symantec's security software. It also detected the separate malware files contained in the payload of the maliciously-constructed word files as Trojan-Dropper, Backdoor-Trojan, and Hacktool-Rootkit.

The use of older file formats in the exploit could backfire on hackers. "The good news is that the default configuration in Microsoft Office 2007 and Office 2003, Service Pack 3 will not allow you to open some older Office file formats, including Office for Macintosh documents," Symantec notes. ®

Next gen security for virtualised datacentres

More from The Register

next story
Ice cream headache as black hat hacks sack Dairy Queen
I scream, you scream, we all scream 'DATA BREACH'!
Goog says patch⁵⁰ your Chrome
64-bit browser loads cat vids FIFTEEN PERCENT faster!
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
New Snowden leak: How NSA shared 850-billion-plus metadata records
'Federated search' spaffed info all over Five Eyes chums
Three quarters of South Korea popped in online gaming raids
Records used to plunder game items, sold off to low lifes
Oz fed police in PDF redaction SNAFU
Give us your metadata, we'll publish your data
prev story

Whitepapers

5 things you didn’t know about cloud backup
IT departments are embracing cloud backup, but there’s a lot you need to know before choosing a service provider. Learn all the critical things you need to know.
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 Big Data
Solving backup challenges and “protect everything from everywhere,” as we move into the era of big data management and the adoption of BYOD.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?