Cloud

6/12/2018
04:35 PM
Connect Directly
Twitter
LinkedIn
Google+
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.
Crowdsourced vs. Traditional Pen Testing
Alex Haynes, Chief Information Security Officer, CDL,  3/19/2019
BEC Scammer Pleads Guilty
Dark Reading Staff 3/20/2019
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win a Starbucks Card! Click Here
Latest Comment: Well, at least it isn't Mobby Dick!
Current Issue
5 Emerging Cyber Threats to Watch for in 2019
Online attackers are constantly developing new, innovative ways to break into the enterprise. This Dark Reading Tech Digest gives an in-depth look at five emerging attack trends and exploits your security team should look out for, along with helpful recommendations on how you can prevent your organization from falling victim.
Flash Poll
The State of Cyber Security Incident Response
The State of Cyber Security Incident Response
Organizations are responding to new threats with new processes for detecting and mitigating them. Here's a look at how the discipline of incident response is evolving.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2019-4035
PUBLISHED: 2019-03-22
IBM Content Navigator 3.0CD could allow attackers to direct web traffic to a malicious site. If attackers make a fake IBM Content Navigator site, they can send a link to ICN users to send request to their Edit client directly. Then Edit client will download documents from the fake ICN website. IBM X...
CVE-2019-4052
PUBLISHED: 2019-03-22
IBM API Connect 2018.1 and 2018.4.1.2 apis can be leveraged by unauthenticated users to discover login ids of registered users. IBM X-Force ID: 156544.
CVE-2019-9648
PUBLISHED: 2019-03-22
An issue was discovered in the SFTP Server component in Core FTP 2.0 Build 674. A directory traversal vulnerability exists using the SIZE command along with a \..\..\ substring, allowing an attacker to enumerate file existence based on the returned information.
CVE-2019-9923
PUBLISHED: 2019-03-22
pax_decode_header in sparse.c in GNU Tar before 1.32 had a NULL pointer dereference when parsing certain archives that have malformed extended headers.
CVE-2019-9924
PUBLISHED: 2019-03-22
rbash in Bash before 4.4-beta2 did not prevent the shell user from modifying BASH_CMDS, thus allowing the user to execute any command with the permissions of the shell.