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An article from
Dive Brief


MICROSOFT INVESTIGATING 2 ZERO-DAY VULNERABILITIES IN EXCHANGE SERVER

One vulnerability is a server-side request forgery, while the second allows
remote-code execution when an attacker has access to PowerShell.

Published Sept. 30, 2022
David Jones Reporter
 * 
 * 
 * 
 * 
 * 

A picture of the Microsoft campus in Redmond, Washington. Stephen
Brashear/Stringer via Getty Images
Listen to the article 2 min
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DIVE BRIEF:

 * Microsoft is investigating reports of two zero-day vulnerabilities affecting
   Microsoft Exchange Server 2013, 2016 and 2019, according to a blog post
   issued Friday. The vulnerabilities do not affect Microsoft Exchange Online
   Customers.
 * The first vulnerability, CVE-2022-41040, is a server-side request forgery
   vulnerability, Microsoft said. The second, CVE-2022-41082, allows remote-code
   execution when a threat actor has access to PowerShell. 
 * Microsoft confirmed it was aware of limited targeted incidents with attackers
   using the two vulnerabilities to compromise systems. During the incidents, an
   attacker can use CVE-2022-41040 to allow an authenticated attacker to
   remotely trigger CVE-2022-41082.





DIVE INSIGHT:

Security researcher Kevin Beaumont on Thursday retweeted a report from GTSC
Cyber Security, which originally said it first detected exploitation of a new
zero day in August. 

The GTSC report noted that researchers detected webshells dropped to Exchange
servers and said the attacker was using Antsword, a Chinese-based open source
website administration tool. 

Beaumont said significant numbers of Exchange servers had been backdoored —
including a honeypot.

Researchers noted similarities to ProxyShell, which emerged in 2021, however
after additional investigation they said this was a new vulnerability. 

Researchers from Huntress said they are actively looking for red flags and
potential signs of exploitation. 

Microsoft stressed that authenticated access is necessary to exploit either of
the two vulnerabilities. 

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Filed Under: Vulnerability


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EDITORS’ PICKS

 * Layla Bird via Getty Images
   
   
   SECURITY PROFESSIONALS ARE BURNED OUT. HERE ARE 5 WAYS TO HELP THEM.
   
   Addressing the causes of burnout requires a top-down approach that better
   aligns security teams with the rest of the business.
   
   By Brian Eastwood • April 18, 2022
 * atiatiati via Getty Images
   
   
   WHAT CYBER INSURANCE COMPANIES WANT FROM CLIENTS
   
   Insurers evaluate how a company leverages technology and what internal
   standards are in place to manage risk.
   
   By Sue Poremba • April 28, 2022


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COMPANY ANNOUNCEMENTS

 * Paperclip, Inc. Selects Chad F. Walter as Chief Revenue Officer From
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   Technology to Prevent D… From Paperclip, Inc.

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COMPANY ANNOUNCEMENTS

View all | Post a press release
Paperclip, Inc. Selects Chad F. Walter as Chief Revenue Officer
From Paperclip, Inc.
September 26, 2022
TSA Trials aXite Security Tools’ OT Cyber Security Solution to Protect Legacy
Security Screeni…
From aXite Security Tools
September 27, 2022
Echelon Risk + Cyber Welcomes Kaushik Kiran as Director of vCISO and Cyber
Strategy Services
From Echelon Risk + Cyber
September 27, 2022
Paperclip SAFE Disrupts Data Security Industry Using Encryption-In-Use
Technology to Prevent D…
From Paperclip, Inc.
September 26, 2022
Editors’ picks
 * Layla Bird via Getty Images
   
   
   SECURITY PROFESSIONALS ARE BURNED OUT. HERE ARE 5 WAYS TO HELP THEM.
   
   Addressing the causes of burnout requires a top-down approach that better
   aligns security teams with the rest of the business.
   
   By Brian Eastwood • April 18, 2022
 * atiatiati via Getty Images
   
   
   WHAT CYBER INSURANCE COMPANIES WANT FROM CLIENTS
   
   Insurers evaluate how a company leverages technology and what internal
   standards are in place to manage risk.
   
   By Sue Poremba • April 28, 2022

Latest in Vulnerability
 * Microsoft investigating 2 zero-day vulnerabilities in Exchange Server
   By David Jones
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   expert says
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 * Organizations rapidly shift tactics to secure the software supply chain
   By David Jones
 * White House guidance on third-party software seen as a major test of cyber
   risk strategy
   By David Jones

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