The emergency update addressed CVE-2018-0986, which would let an attacker execute malicious code on a Windows machine.

Microsoft has issued an emergency patch for CVE-2018-0986, a remote code execution vulnerability in the Microsoft Protection Engine (MMPE). researcher Thomas Dullien, with Google’s Project Zero, is credited with finding the bug, Microsoft reports.

MMPE, or mpengine.dll, provides scanning, detection, and cleaning capabilities for Microsoft’s antivirus and antispyware . Microsoft typically issues MMPE updates once a month, or as needed, to protect against new threats.

This critical vulnerability exists when MMPE doesn’t properly scan a specially crafted file, which leads to memory corruption. If successfully exploited, this could let an attacker execute malicious code on a target machine; take control of the system and install programs; view, change, or delete ; or create new accounts with full user rights.

An affected version of MMPE needs to scan a specially crafted file in order for the bug to be exploited. There are a few ways an attacker could make this happen, Microsoft explains in a security advisory, and he or she doesn’t need to be technically advanced to do it.

One way is to conceal the files on a website the visits. Another is to send the file via email or instant messenger. Alternatively, an attacker could abuse a website that hosts user-provided content by uploading the specially crafted file to a shared location.

MMPE will automatically scan files if the user’s anti-malware software has real-time protection enabled, so the vulnerability can be exploited without the user doing anything. If real-time scanning is not enabled, an attacker would have to wait for a scheduled scan in order to exploit.

“All systems running an affected version of antimalware software are primarily at risk,” Microsoft says. This update fixes the bug in MMPE version 1.1.14700.5 by adjusting how MMPE scans specially crafted files. In addition to the changes for this particular flaw, the patch also includes defense-in-depth updates “to help improve security-related features,” Microsoft says.

Administrators and users don’t need to take action to install MMPE updates because they’re automatically applied within 48 hours of the patch’s release. The exact time of deployment will depend on your software, Internet connection, and infrastructure configuration.

Related Content:

Interop ITX 2018  -  7Bc4ea0bb7 059e 4ef6 a860 71a7f500d0da 7D InteropITX18 Logo HorizDates Color383 - Microsoft Patches Critical Flaw in Malware …

Join Dark Reading LIVE for a two-day Crash Course at Interop ITX. from the industry’s most knowledgeable IT security experts. Check out the agenda here. Register with Promo Code DR200 and save $200.

Kelly Sheridan is the Staff Editor at Dark Reading, where she focuses on cybersecurity news and analysis. She is a business technology journalist who previously reported for InformationWeek, where she covered Microsoft, and Insurance & Technology, where she covered financial … View Full Bio

More Insights



Source link

LEAVE A REPLY

Please enter your comment!
Please enter your name here