UPDATE: Microsoft Disputes PowerPoint Flaw Claim

Microsoft is disputing claims of a zero-day flaw in its PowerPoint application that could allow remote code execution.

"Microsoft's initial investigation has revealed that this is not a new zero-day vulnerability," says a Microsoft spokesman. "Microsoft is actively working in conjunction with MSRA partners to verify those findings and will provide additional information and customer guidance once the investigation is complete."

However, the flaw, whether zero-day or otherwise, appears to be the target of a Trojan.

According to a FAQ document on the Web site, the flaw can be attacked through a malicious .PPT file that will drop a randomly-named file into the Windows Temp folder. For more details, see the FAQ found here.

As of Aug. 21, some AV vendors have reported they have a sample file and they have started an analysis, says Juha-Matti Laurio, a blogger for SecuriTeam and contributor to the Internet Storm Center.

"The specific risk in this case is the fact that Office applications are being installed to almost every company workstation and actually there are not many companies filtering Office file extensions due to their popularity," says Laurio. "Additionally, there is always a delay when releasing virus signatures against new threats."

"It is important to be aware of malicious Office files (.PPT, etc.) located on Web pages and shared via instant messengers, etc. too," adds Laurio.

About the Author

Shawna McAlearney is a senior Web editor at Application Development Trends.


  • Microsoft Publishes Windows Deadlines on Upgrading to SHA-2

    Microsoft on Friday described its 2019 timeline for when it will start distrusting Secure Hash Algorithm-1 (SHA-1) in supported Windows systems, as well as in the Windows Server Update Services 3.0 Service Pack 2 management product.

  • Performing a Storage Refresh on Windows Server 2016, Part 1

    To spruce up some aging lab hardware, Brien decided to make the jump to all-flash storage. Here's a walk-through of the first half of the process.

  • Datacenters Are Cooling Down as Buildouts Heat Up

    Tech giants Google, Apple and others are expanding their datacenter footprints at a rapid rate, and it's pushing the industry to find better ways to power all that infrastructure.

  • Vendors Issue Patches for Linux Container Runtime Flaw Enabling Host Attacks

    This week, the National Institute of Standards and Technology (NIST) described a high-risk security vulnerability (CVE-2019-5736) for organizations using containers that could lead to compromised host systems.

comments powered by Disqus

Office 365 Watch

Sign up for our newsletter.

Terms and Privacy Policy consent

I agree to this site's Privacy Policy.