Vulnerabilities / Threats

2/13/2018
04:00 PM
Connect Directly
Google+
Twitter
RSS
E-Mail
50%
50%

Microsoft Fixes Two Security Flaws in Outlook

February security patches include updates for 50 vulnerabilities, 14 of which are critical.

A critical memory corruption vulnerability in Microsoft Outlook that can be exploited via the Preview Pane feature of the email program was fixed today amid a flurry of patches in Microsoft's February Patch Tuesday security update.

The Outlook flaw (CVE-2018-0852) could be exploited by an attacker to execute malicious code remotely, and if the victim user operates with administrative user rights, the attacker could wrest control of the entire system, Microsoft said in the security update.

Microsoft this month overall has issued patches for some 50 vulnerabilities, including 14 flagged as critical.

Dustin Childs, communications manager for Trend Micro's ZDI team, says the Outlook flaw should be a priority, especially since merely viewing a malicious email in the Preview Pane could allow the attack to execute. "Even more than the publicly known bugs, this CVE falls into the “Patch Now!” category," Childs wrote in a blog post today. "The end user targeted by such an attack doesn't need to open or click on anything in the email – just view it in the Preview Pane. If this bug turns into active exploits – and with this attack vector, exploit writers will certainly try – unpatched systems will definitely suffer."

Microsoft also patched a second Outlook flaw, an elevation of privilege bug, that (CVE-2018-0850) tied to Outlook's processing of incoming messages. It doesn't properly validate the email format, so an attacker could use that flaw to "load a local or remote message store" via SMB, according to Microsoft. An attacker would have to send a malicious email to the victim to initiate the attack.

"Outlook attempts to open the pre-configured message on receipt of the email. You read that right – not viewing, not previewing, but upon receipt. That means there’s a potential for an attacker to exploit this merely by sending an email," ZDI's Childs said. 

Also among the patches in this month's Patch Tuesday were updates to Internet Explorer, Microsoft Edge, Windows, MChakraCore, and Adobe Flash.

Related Content:

 

 

 

Black Hat Asia returns to Singapore with hands-on technical Trainings, cutting-edge Briefings, Arsenal open-source tool demonstrations, top-tier solutions and service providers in the Business Hall. Click for information on the conference and to register.

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
jackdenial
50%
50%
jackdenial,
User Rank: Apprentice
9/29/2018 | 5:47:58 AM
Microsoft Fixes Two Security Flaws in Outlook
This is really great that Microsoft also fixed Outlook flaw that is an elevation of privilege bug and It doesn't properly validate the email format, so unauthorized person could use that flaw to "load a local or remote message store" by the help of SMB, If someone is getting any issue then they can resolve their issue from Outlook Support Number.
Jvliveassist
50%
50%
Jvliveassist,
User Rank: Apprentice
6/4/2018 | 4:52:55 AM
Thanks for this valuable information regarding CVE-2018-0850
We have been trying hard to fix this update CVE-2018-0850. It is concluded that can also appear without office program physically installed on the computer. 


This article is very helpful for Outlook. Help article 830335 is showing that this appeared on computers without office and outlook.
Microsoft President: Governments Must Cooperate on Cybersecurity
Kelly Sheridan, Staff Editor, Dark Reading,  11/8/2018
The Morris Worm Turns 30
Kelly Jackson Higgins, Executive Editor at Dark Reading,  11/9/2018
Veterans Find New Roles in Enterprise Cybersecurity
Kelly Sheridan, Staff Editor, Dark Reading,  11/12/2018
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
Flash Poll
Online Malware and Threats: A Profile of Today's Security Posture
Online Malware and Threats: A Profile of Today's Security Posture
This report offers insight on how security professionals plan to invest in cybersecurity, and how they are prioritizing their resources. Find out what your peers have planned today!
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2018-12174
PUBLISHED: 2018-11-14
Heap overflow in Intel Trace Analyzer 2018 in Intel Parallel Studio XE 2018 Update 3 may allow an authenticated user to potentially escalate privileges via local access.
CVE-2018-3621
PUBLISHED: 2018-11-14
Insufficient input validation in the Intel Driver & Support Assistant before 3.6.0.4 may allow an unauthenticated user to potentially enable information disclosure via adjacent access.
CVE-2018-3635
PUBLISHED: 2018-11-14
Insufficient input validation in installer in Intel Rapid Store Technology (RST) before version 16.7 may allow an unprivileged user to potentially elevate privileges or cause an installer denial of service via local access.
CVE-2018-3696
PUBLISHED: 2018-11-14
Authentication bypass in the Intel RAID Web Console 3 for Windows before 4.186 may allow an unprivileged user to potentially gain administrative privileges via local access.
CVE-2018-3697
PUBLISHED: 2018-11-14
Improper directory permissions in the installer for the Intel Media Server Studio may allow unprivileged users to potentially enable an escalation of privilege via local access.