Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

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 the Executive Editor of Dark Reading. 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.
7 Tips for Infosec Pros Considering A Lateral Career Move
Kelly Sheridan, Staff Editor, Dark Reading,  1/21/2020
For Mismanaged SOCs, The Price Is Not Right
Kelly Sheridan, Staff Editor, Dark Reading,  1/22/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win a Starbucks Card! Click Here
Latest Comment: This comment is waiting for review by our moderators.
Current Issue
IT 2020: A Look Ahead
Are you ready for the critical changes that will occur in 2020? We've compiled editor insights from the best of our network (Dark Reading, Data Center Knowledge, InformationWeek, ITPro Today and Network Computing) to deliver to you a look at the trends, technologies, and threats that are emerging in the coming year. Download it today!
Flash Poll
How Enterprises are Attacking the Cybersecurity Problem
How Enterprises are Attacking the Cybersecurity Problem
Organizations have invested in a sweeping array of security technologies to address challenges associated with the growing number of cybersecurity attacks. However, the complexity involved in managing these technologies is emerging as a major problem. Read this report to find out what your peers biggest security challenges are and the technologies they are using to address them.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2019-16029
PUBLISHED: 2020-01-26
A vulnerability in the application programming interface (API) of Cisco Smart Software Manager On-Prem could allow an unauthenticated, remote attacker to change user account information which can prevent users from logging in, resulting in a denial of service (DoS) condition of the web interface. Th...
CVE-2020-3115
PUBLISHED: 2020-01-26
A vulnerability in the CLI of the Cisco SD-WAN Solution vManage software could allow an authenticated, local attacker to elevate privileges to root-level privileges on the underlying operating system. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerabi...
CVE-2020-3121
PUBLISHED: 2020-01-26
A vulnerability in the web-based management interface of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. The vulnerability is due to insufficient validation of user-supplie...
CVE-2020-3129
PUBLISHED: 2020-01-26
A vulnerability in the web-based management interface of Cisco Unity Connection Software could allow an authenticated, remote attacker to perform a stored cross-site scripting (XSS) attack. The vulnerability is due to insufficient input validation by the web-based management interface. An attacker c...
CVE-2020-3131
PUBLISHED: 2020-01-26
[CVE-2020-3131_su] A vulnerability in the Cisco Webex Teams client for Windows could allow an authenticated, remote attacker to cause the client to crash, resulting in a denial of service (DoS) condition. The attacker needs a valid developer account to exploit this vulnerability. The vulnerability i...