Attacks/Breaches
11/5/2013
03:14 PM
Connect Directly
Google+
Twitter
RSS
E-Mail
50%
50%

Microsoft Warns Of Zero-Day Attacks Exploiting TIFF

'Fix it' released for protection until patch is prepared

Targeted attacks exploiting a zero-day flaw in the Microsoft Graphics component have been spotted in the wild hitting victims in the Middle East and South Asia.

Microsoft says the newly discovered remote code execution vulnerability, CVE-2013-3096, can be exploited via a malformed TIFF image. "Microsoft is investigating private reports of a vulnerability in the Microsoft Graphics component that affects Microsoft Windows, Microsoft Office, and Microsoft Lync. Microsoft is aware of targeted attacks that attempt to exploit this vulnerability in Microsoft Office products," the software company said in a security advisory issued today.

Bad guys can exploit the flaw that affects Windows, Office, and Lync by luring a victim into previewing or opening an email with a malicious file attachment or to visit a malicious URL. The end game is that the attacker can take over the machine. Microsoft has released a temporary Fix it patch for protection against attacks until it either issues a patch via its Patch Tuesday schedule or an out-of-band update.

"An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights," Microsoft says.

Microsoft says in the current attacks, the exploit requires a user to open the malicious Word attachment, which exploits the bug using a malicious TIFF image embedded in the document. The attack appears sophisticated in that it bypasses Microsoft's Data Execution Prevention and Address Space Layout Randomization mitigation defenses.

The flaw is in how Windows, Office, and Lync improperly handle "specially crafted" TIFF files, Microsoft says.

Users can install the temporary Fix it tool that blocks the attack, or employ Microsoft's Enhanced Mitigation Experience Toolkit (EMET), which can stop the attack, Elia Florio with Microsoft's Security Response Center engineering group said in a blog post today.

"The attacks observed are very limited and carefully carried out against selected computers, largely in the Middle East and South Asia," Florio wrote.

Wolfgang Kandek, CTO of Qualys, says the Fix it turns off TIFF rendering in the graphics library. "The listed software packages are not vulnerable under all conditions, so it is important that you take a look at your installed base and your possible exposure for the next couple of weeks into December," he advised in a blog post today. "Given the close date of the next Patch Tuesday for November, we don't believe that we can count on a patch arriving in time; we will probably have to wait until December, which makes your planning for a work-around even more important."

Microsoft's full security advisory on the new zero-day is here.

Have a comment on this story? Please click "Add Your Comment" below. If you'd like to contact Dark Reading's editors directly, send us a message.

Kelly Jackson Higgins is Executive Editor at DarkReading.com. She is an award-winning veteran technology and business journalist with more than two decades of experience in reporting and editing for various publications, including Network Computing, Secure Enterprise ... View Full Bio

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
Tommy097
50%
50%
Tommy097,
User Rank: Apprentice
3/7/2014 | 7:35:44 AM
re: Microsoft Warns Of Zero-Day Attacks Exploiting TIFF
My work involves dealing with tiff a lot. Well I should have known better. Maybe it's time to swift to another format. I'm gonna convert them all to PDF.
http://www.yiigo.com/guides/vb...
Cale Dansbee
50%
50%
Cale Dansbee,
User Rank: Apprentice
11/6/2013 | 12:18:41 AM
re: Microsoft Warns Of Zero-Day Attacks Exploiting TIFF
Another example of guided cruise malware like Stuxnet???
Register for Dark Reading Newsletters
White Papers
Cartoon
Latest Comment: nice post
Current Issue
Flash Poll
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2014-1750
Published: 2015-07-01
Open redirect vulnerability in nokia-mapsplaces.php in the Nokia Maps & Places plugin 1.6.6 for WordPress allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the href parameter to page/place.html. NOTE: this was originally reported as cross-sit...

CVE-2014-1836
Published: 2015-07-01
Absolute path traversal vulnerability in htdocs/libraries/image-editor/image-edit.php in ImpressCMS before 1.3.6 allows remote attackers to delete arbitrary files via a full pathname in the image_path parameter in a cancel action.

CVE-2015-0848
Published: 2015-07-01
Heap-based buffer overflow in libwmf 0.2.8.4 allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a crafted BMP image.

CVE-2015-1330
Published: 2015-07-01
unattended-upgrades before 0.86.1 does not properly authenticate packages when the (1) force-confold or (2) force-confnew dpkg options are enabled in the DPkg::Options::* apt configuration, which allows remote man-in-the-middle attackers to upload and execute arbitrary packages via unspecified vecto...

CVE-2015-1950
Published: 2015-07-01
IBM PowerVC Standard Edition 1.2.2.1 through 1.2.2.2 does not require authentication for access to the Python interpreter with nova credentials, which allows KVM guest OS users to discover certain PowerVC credentials and bypass intended access restrictions via unspecified Python code.

Dark Reading Radio
Archived Dark Reading Radio
Marc Spitler, co-author of the Verizon DBIR will share some of the lesser-known but most intriguing tidbits from the massive report