BlueHat Seattle 2019 Call for Papers is Now Open!

2019 has seen a phenomenal BlueHatIL in February followed by a wildly successful BlueHat Shanghai in May… now it’s time to come back home for BlueHat Seattle! 2 days of hands-on technical training October 22-23, 2019 2 days of conference talks from industry-leading security researchers and cyber...

CVE-2022-30190 マイクロソフト サポート診断ツールの脆弱性に関するガイダンス

本ブログは Guidance for CVE-2022-30190 Microsoft Support Diagnostic Tool Vulnerability の抄訳版です。最新の情報は原文を参照してください。 2022 年 7 月 12 日更新 : マイク...

Guidance for CVE-2022-23278 spoofing in Microsoft Defender for Endpoint

Microsoft released a security update to address CVE-2022-23278 in Microsoft Defender for Endpoint. This important class spoofing vulnerability impacts all platforms. We wish to thank Falcon Force for the collaboration on addressing this issue through coordinated vulnerability disclosure...

Meet the BlueHat Content Advisory Board

We couldn’t do BlueHat without the Content Advisory Board, the brain trust reviewing submissions to the CFP. Representing both Microsoft and other parts of security community, the CAB applies their industry and speaker experience to create the BlueHat agenda that’s the right mix of topics and...

Guidance for responders: Investigating and remediating on-premises Exchange Server vulnerabilities

This guidance will help customers address threats taking advantage of the recently disclosed Microsoft Exchange Server on-premises vulnerabilities CVE-2021-26855, CVE-2021-26858, CVE-2021-26857, and CVE-2021-27065, which are being exploited. We strongly urge customers to immediately update system...

Time zone updates for Brazil are available for 2019/2020

The June 2019 update provides below changes for Brazil Daylight Savings Time DST. Brazil has decided to no longer follow DST. DST won’t start on the first Sunday of November 2019 as previously scheduled. More details about latest DST changes for Brazil can be found here. To reflect these changes...

What’s new in the MSRC Report Abuse Portal and API

The Microsoft Security Response Center MSRC has always been at the forefront of addressing cyber threats, privacy issues, and abuse arising from Microsoft Online Services. Building on our commitment, we have introduced several updates to the Report Abuse Portal and API, which will significantly...

Call for Papers | Microsoft BlueHat Shanghai 2019

The Microsoft Security Response Center MSRC recently announced our first BlueHat security conference in Shanghai which will take place on May 29-30, 2019. After 15 years of BlueHat events in Redmond, Washington and Israel, we are thrilled to expand to a new location. We work with many talented...

Guidance for Azure Active Directory (AD) keyCredential property Information Disclosure in Application and Service Principal APIs

Microsoft recently mitigated an information disclosure issue, CVE-2021-42306, to prevent private key data from being stored by some Azure services in the keyCredentialsproperty of an Azure Active Directory Azure AD Applicationand/or Service Principal, and prevent reading of private key data...

Microsoft Announces Top Three Contributing Partners in the Microsoft Active Protections Program (MAPP)

Today Microsoft announced the MAPP program Top Vulnerability Contributors, Top Threat Indicator Submitters, and Top Zero-Day Reporting for the period of July 1, 2018 – June 30, 2019. The Microsoft Active Protections Program provides security and protection to customers through cooperation and...

Microsoft Launches a New Recognition Program for MAPP Partners

There are many dedicated people and organizations who contribute to the protection and security of our common customers. For years, Microsoft has recognized security researchers for helping protect the ecosystem. Now, we’re announcing the launch of a new program to better recognize and thank...

How Microsoft defends against indirect prompt injection attacks

Summary The growing adoption of large language models LLMs in enterprise workflows has introduced a new class of adversarial techniques: indirect prompt injection. Indirect prompt injection can be used against systems that leverage large language models LLMs to process untrusted data...

Attacks exploiting Netlogon vulnerability (CVE-2020-1472)

Microsoft has received a small number of reports from customers and others about continued activity exploiting a vulnerability affecting the Netlogon protocol CVE-2020-1472 which was previously addressed in security updates starting on August 11, 2020. If the original guidance is not applied, the...

Guidance for CVE-2022-30190 Microsoft Support Diagnostic Tool Vulnerability

UPDATE July 12, 2022: As part of the response by Microsoft, a defense in depth variant has been found and fixed in the Windows July cumulative updates. Microsoft recommends installing the July updates as soon as possible. Windows Version Link to KB article LInk to Catalog Windows 8.1, Windows...

Vulnerability mitigated in the third-party Data Connector used in Azure Synapse pipelines and Azure Data Factory (CVE-2022-29972)

Summary Microsoft recently mitigated a vulnerability in Azure Data Factory and Azure Synapse pipelines. The vulnerability was specific to the third-party Open Database Connectivity ODBC driver used to connect to Amazon Redshift in Azure Synapse pipelines and Azure Data Factory Integration Runtime...

Clarified Guidance for CVE-2021-34527 Windows Print Spooler Vulnerability

On Tuesday July 6, 2021, Microsoft issued CVE-2021-34527 regarding a Windows Print Spooler vulnerability. Updates were released on July 6 and 7 which addressed the vulnerability for all supported Windows versions. We encourage customers to update as soon as possible. CVE-2021-34527 - Windows Prin...

Patch new wormable vulnerabilities in Remote Desktop Services (CVE-2019-1181/1182)

Today Microsoft released a set of fixes for Remote Desktop Services that include two critical Remote Code Execution RCE vulnerabilities, CVE-2019-1181 and CVE-2019-1182. Like the previously-fixed ‘BlueKeep’ vulnerability CVE-2019-0708, these two vulnerabilities are also ‘wormable’, meaning that a...

Designing a COM library for Rust

I interned with Microsoft as a Software Engineering Intern in the MSRC UK team in Cheltenham this past summer. I worked in the Safe Systems Programming Language SSPL group, which explores safe programming languages as a proactive measure against memory-safety related vulnerabilities. This blog po...

Exciting updates to the Copilot (AI) Bounty Program: Enhancing security and incentivizing innovation

At Microsoft, we are committed to fostering a secure and innovative environment for our customers and users. As part of this commitment, we are thrilled to announce significant updates to our Copilot AI Bounty Program. These changes are designed to enhance the program's effectiveness, incentivize...

Congratulations and New Swag Awards for the Top MSRC 2022 Q1 Security Researchers!

Today, we are excited to recognize this quarter’s Microsoft Researcher Recognition Program leaderboard and share new swag awards and improvements to the leaderboard. Congratulations and thank you to everyone for your hard work and continued partnership to secure customers. The top three researche...

April 2021 Update Tuesday packages now available

Update August 25, 2021: Microsoft strongly recommends that you update your servers with the most recent security updates available. CVE-2021-34473 ProxyShell CVE-2021-34523 ProxyShell CVE-2021-33766 Today is Update Tuesday – our commitment to provide a predictable monthly schedule to release...

An intern’s experience with Rust

Over the course of my internship at the Microsoft Security Response Center MSRC, I worked on the safe systems programming languages SSPL team to promote safer languages for systems programming where runtime overhead is important, as outlined in this blog. My job was to port a security critical...

Patch new wormable vulnerabilities in Remote Desktop Services (CVE-2019-1181/1182)

Today Microsoft released a set of fixes for Remote Desktop Services that include two critical Remote Code Execution RCE vulnerabilities, CVE-2019-1181 and CVE-2019-1182. Like the previously-fixed ‘BlueKeep’ vulnerability CVE-2019-0708, these two vulnerabilities are also ‘wormable’, meaning that a...

2019 年 7 月のセキュリティ更新プログラム (月例)

2019 年 7 月 10 日 日本時間、マイクロソフトは以下のソフトウェアのセキュリティ更新プログラムを公開しました。...

January 2019 Security Update Release

Today, we released security updates to provide additional protections against malicious attackers. As a best practice, we encourage customers to turn on automatic updates. More information about this month’s security updates can be found on the Security Update Guide...

Prevent the impact of a Linux worm by updating Exim (CVE-2019-10149)

This week, MSRC confirmed the presence of an active Linux worm leveraging a critical Remote Code Execution RCE vulnerability, CVE-2019-10149, in Linux Exim email servers running Exim version 4.87 to 4.91. Microsoft Azure infrastructure and Services are not affected; only customer’s Linux IaaS...

Awareness and guidance related to OpenSSL 3.0 – 3.0.6 risk (CVE-2022-3786 and CVE-2202-3602)

Summary Microsoft is aware and actively addressing the impact associated with the recent OpenSSL vulnerabilities announced on October 25th 2022, fixed in version 3.0.7. As part of our standard processes, we are rolling out fixes for impacted services. Any customer action that is required will be...

Microsoft’s Response to CVE-2021-44228 Apache Log4j 2

Published on: 2021 Dec 11, updated 2022 Apr 6. SUMMARY SUMMARY Microsoft continues our analysis of the remote code execution vulnerabilities related to Apache Log4j a logging tool used in many Java-based applications disclosed on 9 Dec 2021. Currently, Microsoft is not aware of any impact, outsid...

Calling all breakers & builders: BlueHat Seattle registration is open!

Exciting changes are coming to BlueHat Seattle 2019! If you’d like to attend this premier security conference, we have good news for you: registration for BlueHat Seattle is now open and we hope you register. Wait, isn't BlueHat invitation-only? It is…but if we haven’t sent you an invitation, we...

It’s Official – The Way We Recognize Our Security Researchers

We deeply appreciate the partnership of the many talented security researchers who report vulnerabilities to Microsoft through Coordinated Vulnerability Disclosure. We pay bounties for research in key areas, and each year at Black Hat USA, we’ve recognized the most impactful researchers helping t...

Prevent a worm by updating Remote Desktop Services (CVE-2019-0708)

Today Microsoft released fixes for a critical Remote Code Execution vulnerability, CVE-2019-0708, in Remote Desktop Services – formerly known as Terminal Services – that affects some older versions of Windows. The Remote Desktop Protocol RDP itself is not vulnerable. This vulnerability is...

マイクロソフトは Outlook の 特権昇格の脆弱性を緩和します

本ブログは、Microsoft Mitigates Outlook Elevation of Privilege Vulnerability の抄訳版です。最新の情報は原文を参照してください。 2023 年 5 月...

Microsoft’s Response to CVE-2021-44228 Apache Log4j 2

Published on: 2021 Dec 11, updated 2022 Apr 6. SUMMARY Microsoft continues our analysis of the remote code execution vulnerabilities related to Apache Log4j a logging tool used in many Java-based applications disclosed on 9 Dec 2021. Currently, Microsoft is not aware of any impact, outside of the...

Windows Print Spooler の脆弱性情報 (CVE-2021-34527) に対するセキュリティ更新プログラムの定例外での公開

2021 年 7 月 7 日 日本時間、マイクロソフトは以下のソフトウェアのセキュリティ更新プログラムを定例外で公...

Netlogon Domain Controller Enforcement Mode is enabled by default beginning with the February 9, 2021 Security Update, related to CVE-2020-1472

Microsoft addressed a Critical RCE vulnerability affecting the Netlogon protocol CVE-2020-1472 on August 11, 2020. We are reminding our customers that beginning with the February 9, 2021 Security Update release we will be enabling Domain Controller enforcement mode by default. This will block...

Acquiring a VHD to Investigate

In a previous post we described some of the differences between on-premises/physical forensics and cyber investigations and those performed in the cloud, and how this can make cloud forensics challenging. That blog post described a method of creating and maintaining a VM image which can be...

CVE-2023-24932 に関連するセキュア ブート マネージャーの変更に関するガイダンス

本ブログは、Guidance related to Secure Boot Manager changes associated with CVE-2023-24932 の抄訳版です。最新の情報は原文を参照してください。 概要...

CVE-2021-44228 Apache Log4j 2 に対するマイクロソフトの対応

本ブログは、Microsoft’s Response to CVE-2021-44228 Apache Log4j 2 の抄訳版です。最新の情報は、元記事を参照してください。...

2019 年 8 月のセキュリティ更新プログラム (月例)

2019 年 8 月 14 日 日本時間、マイクロソフトは以下のソフトウェアのセキュリティ更新プログラムを公開しました。 The post 2019 年 8 月のセキュリティ更新プログラム 月例 appeared first on Microsoft Security Response Center...

Guidance for Azure Active Directory (AD) keyCredential property Information Disclosure in Application and Service Principal APIs

Microsoft recently mitigated an information disclosure issue, CVE-2021-42306, to prevent private key data from being stored by some Azure services in the keyCredentials property of an Azure Active Directory Azure AD Application and/or Service Principal, and prevent reading of private key data...

Announcing 2019 MSRC Most Valuable Security Researchers

Earlier today we announced MSRC’s 2018-2019 Most Valuable Security Researchers at Black Hat. The following 75 researchers hail from all corners of the world and possess varied experience and skills, yet all of them have contributed to securing the Microsoft’s customers and the broader ecosystem...

BlueHat Asia 2025: Closing soon: Submit your papers by September 5, 2025

The next chapter of the Microsoft Security Response Center’s MSRC BlueHat security conference is fast approaching. BlueHat Asia 2025 will take place in Bengaluru, India, on November 5 – 6, 2025 and the Call for Papers is now open. Submissions will be accepted through September 5, 2025. Now in its...

April 2021 Update Tuesday packages now available

Update August 25, 2021: Microsoft strongly recommends that you update your servers with the most recent security updates available. CVE-2021-34473 ProxyShell CVE-2021-34523 ProxyShell CVE-2021-33766 Today is Update Tuesday – our commitment to provide a predictable monthly schedule to release...

KVA Shadow: Mitigating Meltdown on Windows

On January 3rd, 2018, Microsoft released an advisory and security updates that relate to a new class of discovered hardware vulnerabilities, termed speculative execution side channels, that affect the design methodology and implementation decisions behind many modern microprocessors. This post...

A deep dive into MUTZ

AtDEF CON 33, we shared our research into MapUrlToZone, a critical Windows security component that determines whether a given path is local, on the intranet, or on the broader Internet. This classification drives several security decisions across Windows, for example, preventing a CreateFile call...

Congratulating Our Top MSRC 2021 Q1 Security Researchers!

We’re excited to announce the top contributing researchers for the 2021 First Quarter Q1! Congratulations to all the researchers recognized in this quarter’s leaderboard and thank you to everyone who continues to help secure our customers and the ecosystem. The top three researchers of the 2021 Q...

Customer Guidance for Reported Zero-day Vulnerabilities in Microsoft Exchange Server

November 8, 2022 update - Microsoft released security updates for CVE-2022-41040 and CVE-2022-41082. We recommend that customers protect their organizations by applying the updates immediately to affected systems. The options described in the Mitigations section are no longer recommended. For mor...

Microsoft’s Response to CVE-2022-22965 Spring Framework

Summary Microsoft used the Spring Framework RCE, Early Announcement to inform analysis of the remote code execution vulnerability, CVE-2022-22965, disclosed on 31 Mar 2022. We have not to date noted any impact to the security of our enterprise services and have not experienced any degraded servic...

Meet the MSRC at Black Hat 2019

We’re getting close to Black Hat, and we hope to see you there. Here’s where you can find members of the Microsoft Security Response Center if you’d like to say hello, ask a question about a report you made, discuss a recent blog article, or just show us pictures of your dog. Wednesday, August 7 ...

MSRC is going to ROOTCON!

The Microsoft Security Response Center MSRC works with partners all over the world to protect Microsoft customers. This week we’re headed to the Philippines to meet security researchers and bounty hunters at ROOTCON 13! Planning on attending ROOTCON? If you want to learn more about how you can ea...