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.

Cloud

6/12/2018
04:35 PM
Connect Directly
Twitter
LinkedIn
RSS
E-Mail
50%
50%

Microsoft Fixes 11 Critical, 39 Important Vulns

The most critical vulnerability, experts say, affects Windows Domain Name Systems, while another lets attackers hack Cortana from the lock screen.

Another month, another Patch Tuesday update. Microsoft today released 50 security fixes for problems in ChakraCore, Hyper-V Server, Windows, Microsoft Office, and Office Services. Of these, 11 are rated as Critical severity and 39 are ranked Important.

None of the bugs were under active attack at the time fixes were released, though one was publicly known. CVE-2018-8267, a scripting engine memory corruption vulnerability, is considered Critical and could corrupt memory in a way that a successful attacker could gain the rights of a current user and assume control over an affected system.

Microsoft also released updates for Speculative Store Bypass, otherwise known as Spectre Variant 4, discovered in May. Today's patches provide Windows support for Speculative Store Bypass Disable (SSBD) for Intel processors but require microcode/firmware and registry updates to fully protect against Variant 4.

Security pros point to the importance of CVE-2018-8225, a Windows DNSAPI remote code execution vulnerability that "clearly wins for most critical this month," according to researchers at Trend Micro's Zero-Day Initiative (ZDI). The flaw exists in the Windows Domain Name System (DNS) when it fails to properly handle DNS responses.

If successfully exploited, the bug could let someone run arbitrary code in the context of the Local System Account. An attacker would have to use a malicious DNS server to transmit corrupted DNS responses to the target, Microsoft explains. They could try to man-in-the-middle a legitimate query or trick a DNS server into querying a malicious server. It can be done from the command line or scripted, ZDI researchers explain.

"This means there’s a SYSTEM-level bug in a listening service on critical infrastructure servers, which also means this is wormable," they explain. "'Patch Now' doesn't even seem forceful enough. I have the sense we'll be hearing about this bug for a while."

Another critical bug worth noting is CVE-2018-8231, an HTTP protocol stack remote code execution vulnerability affecting the Web server component http.sys. An attacker could use code execution to remotely send a malformed packet to a target server and execute code with the same level of privilege as http.sys.

An interesting, though not critical, vulnerability in Windows 10 lets attackers bypass the lock screen through a default configuration for Cortana. Microsoft's voice assistant lets anyone interact by saying "Hey, Cortana" while the device is locked, McAfee researchers discovered.

CVE-2018-8140 could let an attacker execute commands via mouse, touchpad, or touchscreen to access data. If you're close enough to a machine to speak with Cortana, you're close enough to query a full menu of documents and execute programs with elevated privileges. Physical access is needed to exploit CVE-2018-8140, and experts don't think remote attacks are likely. However, the bug is worth noting as people bring voice assistants into their homes and offices.

Related Content:

 

Top industry experts will offer a range of information and insight on who the bad guys are – and why they might be targeting your enterprise. Click for more information

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

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
RosanaXayaraj
50%
50%
RosanaXayaraj,
User Rank: Apprentice
6/19/2018 | 3:34:05 PM
Re: More information
Thanks
joe9804
50%
50%
joe9804,
User Rank: Apprentice
6/12/2018 | 6:50:37 PM
More information
At last Microsoft fixed the bugs. It was much needed step they have taken. many people facing the problem with this bugs. I was one of them. But I can't understand where is the problem. So I contact Netgear Router Support USA. They tell me the problem and then I can understand the main problem.
NSA Appoints Rob Joyce as Cyber Director
Dark Reading Staff 1/15/2021
Vulnerability Management Has a Data Problem
Tal Morgenstern, Co-Founder & Chief Product Officer, Vulcan Cyber,  1/14/2021
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win an Amazon Gift Card! Click Here
Latest Comment: This is not what I meant by "I would like to share some desk space"
Current Issue
2020: The Year in Security
Download this Tech Digest for a look at the biggest security stories that - so far - have shaped a very strange and stressful year.
Flash Poll
Assessing Cybersecurity Risk in Today's Enterprises
Assessing Cybersecurity Risk in Today's Enterprises
COVID-19 has created a new IT paradigm in the enterprise -- and a new level of cybersecurity risk. This report offers a look at how enterprises are assessing and managing cyber-risk under the new normal.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2020-26252
PUBLISHED: 2021-01-20
OpenMage is a community-driven alternative to Magento CE. In OpenMage before versions 19.4.10 and 20.0.6, there is a vulnerability which enables remote code execution. In affected versions an administrator with permission to update product data to be able to store an executable file on the server ...
CVE-2020-26278
PUBLISHED: 2021-01-20
Weave Net is open source software which creates a virtual network that connects Docker containers across multiple hosts and enables their automatic discovery. Weave Net before version 2.8.0 has a vulnerability in which can allow an attacker to take over any host in the cluster. Weave Net is suppli...
CVE-2021-1235
PUBLISHED: 2021-01-20
A vulnerability in the CLI of Cisco SD-WAN vManage Software could allow an authenticated, local attacker to read sensitive database files on an affected system. The vulnerability is due to insufficient user authorization. An attacker could exploit this vulnerability by accessing the vshell of an af...
CVE-2021-1241
PUBLISHED: 2021-01-20
Multiple vulnerabilities in Cisco SD-WAN products could allow an unauthenticated, remote attacker to execute denial of service (DoS) attacks against an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
CVE-2021-1247
PUBLISHED: 2021-01-20
Multiple vulnerabilities in certain REST API endpoints of Cisco Data Center Network Manager (DCNM) could allow an authenticated, remote attacker to execute arbitrary SQL commands on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.