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RedirectionGuard: Mitigating unsafe junction traversal in Windows
As attackers continue to evolve, Microsoft is committed to staying ahead by not only responding to vulnerabilities, but also by anticipating and mitigating entire classes of threats. One such threat, filesystem redirection attacks, has been a persistent vector for privilege escalation. In respons...
Microsoft Bug Bounty Program Year in Review: $13.8M in Rewards
We are thrilled to share the results of our collaboration with over 345 security researchers from +45 countries around the world in the past 12 months. Together, we have discovered and fixed more than a thousand potential security issues before they impacted our customers. In recognition of this...
2023 年 1 月のセキュリティ更新プログラム (月例)
2023 年 1 月 10 日 米国時間 、マイクロソフトは、マイクロソフト製品に影響する脆弱性を修正するために、セキ...
2022 年 9 月のセキュリティ更新プログラム (月例)
2022 年 9 月 13 日 米国時間、マイクロソフトは、マイクロソフト製品に影響する脆弱性を修正するために、セキ...
Microsoft Mitigates Azure Site Recovery Vulnerabilities
Summary: Microsoft recently mitigated a set of vulnerabilities in Azure Site Recovery ASR and released fixes today, July 12, as part of our regular Update Tuesday cycle. These vulnerabilities affect all ASR on-premises customers using a VMware/Physical to Azure scenario and are fixed in the lates...
A Man of Action: Meet Callum Carney
Hidden Talents : He was a competitive swimmer for many years. Instrument of Choice : His fingers were made for the keyboard, but he used to play the trumpet. 5 pieces of entertainment for the rest of his life : The Office, World War Z, The Matrix, Breaking Bad, The Thick of It...
Azure Database for PostgreSQL Flexible Server Privilege Escalation and Remote Code Execution
MSRC was informed by Wiz, a cloud security vendor, under Coordinated Vulnerability Disclosure CVD of an issue with the Azure Database for PostgreSQL Flexible Server that could result in unauthorized cross-account database access in a region. By exploiting an elevated permissions bug in the Flexib...
Disclosure of Vulnerability in Azure Automation Managed Identity Tokens
On December 10, 2021, Microsoft mitigated a vulnerability in the Azure Automation service. Azure Automation accounts that used Managed Identitiestokens for authorization and an Azure Sandbox for job runtime and execution were exposed. Microsoft has not detected evidence of misuse of tokens...
Coming Soon: New Security Update Guide Notification System
Sharing information through the Security Update Guide is an important part of our ongoing effort to help customers manage security risks and keep systems protected. Based on your feedback we have been working to make signing up for and receiving Security Update Guide notifications easier. We are...
Announcing the Launch of the Azure SSRF Security Research Challenge
Microsoft is excited to announce the launch of a new, three-month security research challenge under the Azure Security Lab initiative. The Azure Server-Side Request Forgery SSRF Research Challenge invites security researchers to discover and share high impact SSRF vulnerabilities in Microsoft...
Point and Print Default Behavior Change
Our investigation into several vulnerabilities collectively referred to as “PrintNightmare” has determined that the default behavior of Point and Print does not provide customers with the level of security required to protect against potential attacks. Today, we are addressing this risk by changi...
Point and Print Default Behavior Change
Our investigation into several vulnerabilities collectively referred to as “PrintNightmare” has determined that the default behavior of Point and Print does not provide customers with the level of security required to protect against potential attacks. Today, we are addressing this risk by changi...
Introducing Bounty Awards for Teams Mobile Applications Security Research
We are pleased to announce the addition of Microsoft Teams mobile applications to the Microsoft Applications Bounty Program. Through the expanded program we welcome researchers from across the globe to seek out and disclose any high impact security vulnerabilities they may find in Teams mobile...
MSRC Security Researcher Recognition: 2021
Wondering how to get into the 2021 MSRC Most Valuable Security Researcher list and get recognized during the Black Hat USA this August? Read on to learn more about the different paths you can take to get into the top researcher tiers. The MSRC Most Valuable Security Researcher MVR and MSRC...
Continuing to Listen: Good News about the Security Update Guide API!
Based on user feedback we have simplified programmatic access to the security update data by removing the authentication and API-Key requirements when using the CVRF API. You will no longer have to log in to obtain a personal API key to access the data. Were happy to make this valuable public...
Customer Guidance on Recent Nation-State Cyber Attacks
Note: we are updating as the investigation continues. Revision history listed at the bottom. This post contains technical details about the methods of the actor we believe was involved in Recent Nation-State Cyber Attacks, with the goal to enable the broader security community to hunt for activit...
Concluding the Azure Sphere Security Research Challenge, Microsoft Awards $374,300 to Global Security Research Community
The Azure Sphere Security Research Challenge brought together 70 researchers from 21 countries to help secure Azure Sphere customers and expand Microsoft’s partnerships with the global IoT security research community. During the three-month Azure Sphere Security Research Challenge, researchers...
Congratulations to the MSRC’s 2020 Most Valuable Security Researchers
Today we announce our Most Valuable Security Researchers for 2020! The MSRC Researcher Recognition program is an integral aspect of recognizing the ongoing partnerships with our community of talented security researchers who report through Coordinated Vulnerability Disclosure CVD. These...
Solving Uninitialized Stack Memory on Windows
This blog post outlines the work that Microsoft is doing to eliminate uninitialized stack memory vulnerabilities from Windows and why we’re on this path. This blog post will be broken down into a few parts that folks can jump to: Uninitialized Memory Background Potential Solutions to Uninitialize...
Azure Sphere Security Research Challenge Now Open
The Azure Sphere Security Research Challenge is an expansion of Azure Security Lab, announced at Black Hat in August 2019. At that time, a select group of talented researchers was invited to come and do their worst, emulating criminal hackers in a customer-safe cloud environment. This new researc...
December 2019 security updates are available
We have released the December 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 in the Security Update Guide. As a reminder,...
2019 年 12 月のセキュリティ更新プログラム (月例)
2019 年 12 月 11 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...
2019 年 10 月のセキュリティ更新プログラム (月例)
2019 年 10 月 9 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...
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...
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...
Microsoft Announces Top Contributing Partners in the Microsoft Active Protections Program (MAPP)
Today we announce the top organizational candidates for Vulnerability Top Contributors, Threat Indicator Top Submitters, and Zero-Day Top Reporting for the period of July 1, 2018 – June 30, 2019. The Microsoft Active Protections Program provides security and protection to customers through...
June 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...
2019 年 3 月のセキュリティ更新プログラム (月例)
2019 年 3 月 13 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...
Microsoft Security Servicing Criteria for Windows
One of our goals in the Microsoft Security Response Center MSRC is to be more transparent with security researchers and our customers on the criteria we use for determining when we intend to address a reported vulnerability through a security update. Our belief is that improving transparency on...
The Making of the Top 100 Researcher List
At Black Hat USA each year, we unveil the Top 100 Security Researcher list to reflect the amazing engagement we get from the community. During this period, we had several thousand researchers engage with the Microsoft Security Response Center MSRC. We appreciate all the partnership and coordinati...
Announcing Changes to Microsoft’s Mitigation Bypass Bounty
Today we’re announcing a change to the Mitigation Bypass Bounty that removes Control Flow Guard CFG from the set of in-scope mitigations. In this blog, we’ll provide additional background and explain why we’re making this change. Mitigation Bypass Bounty Background Microsoft started the Mitigatio...
Inside the MSRC– The Monthly Security Update Releases
For the second in this series of blog entries we want to look into which vulnerability reports make it into the monthly release cadence. It may help to start with some history. In September 2003 we made a change from a release anytime approach to a mostly predictable, monthly release cadence...
Extending the Microsoft Office Bounty Program
Microsoft announces the extension of the Microsoft Office Bounty Program through December 31, 2017. This extension is retroactive for any cases submitted during the interim. The engagement we have had with the security community has been great and we are looking to continue that collaboration on...
EMET II のさらに先へ - Windows Defender Exploit Guard
本記事は、Security Research & Defense のブログ "Moving Beyond EMET II – Windows Defender Exploit Guard" 2017 年 8 月 9 日 米国時間公開 を翻訳したもので...
Coming together to address Encapsulated PostScript (EPS) attacks
Today’s security updates include three updates that exemplify how the security ecosystem can come together to help protect consumers and enterprises. We would like to thank FireEye and ESET for working with us. Customers that have the latest security updates installed are protected against the...
Taking your feedback on the Security Update Guide
The Security Update Guide has been in public preview since November 2016. This month marked our first release when security update information was published entirely in the new format. Over the last few months, customers and partners have provided a lot of feedback on the direction and...
セキュリティ更新プログラム ガイド (Security Update Guide) を使ってみよう
※ 2020 年 11 月に、セキュリティ更新プログラム ガイドがリニューアルしています。新しいセキュリティ更新プログ...
Windows Defender ATP でクロスプロセス インジェクションを発見する
本記事は、Microsoft Malware Protection Center のブログ “Uncovering cross-process injection with Windows Defender ATP” 2017 年 3 月 8 日 米国時...
January 2016 Security Update Release Summary
Today we released security updates to provide additional protections against malicious attackers. As a best practice, we encourage customers to apply security updates as soon as they are released. More information about this month’s security updates and advisories can be found in the Security...
Out-of-band release for Security Bulletin MS15-078
Today, we released a security bulletin to provide an update for Microsoft Windows. Customers who have automatic updates enabled or apply the update, will be protected. We recommend customers apply the update as soon as possible, following the directions in the security bulletin. More information...
Announcing EMET 5.0
Today, we are excited to announce the general availability of the Enhanced Mitigation Experience Toolkit EMET 5.0. As many of you already know, EMET is a free tool, designed to help customers with their defense in depth strategies against cyberattacks, by helping detect and block exploitation...
Congratulations to James Forshaw Recipient of Our First $100,000 Bounty for New Mitigation Bypass Techniques!
Congratulations to James Forshaw for coming up with a new exploitation technique to get our first ever $100,000 bounty. A security vulnerability researcher with Context Information Security, James already came in hot with design level bugs he found during the IE11 Preview Bug Bounty, and we’re...
Advance Notification Service for October 2013 Security Bulletin Release
Today we’re providing advance notification for the release of eight bulletins, four Critical and four Important, for October 2013. The Critical updates address vulnerabilities in Internet Explorer, .NET Framework and Windows. The Critical update for Internet Explorer will be a cumulative update...
Assessing risk for the June 2013 security updates
Today we released five security bulletins addressing 23 CVE’s. One bulletin has a maximum severity rating of Critical, and four have a maximum severity rating of Important. We hope that the table below helps you prioritize the deployment of the updates appropriately for your environment. Bulletin...
Exploring the cloud: How Matthew Jensen approaches Azure security research
For Matthew Jensen, a career in security wasn't part of some carefully planned roadmap...
Announcing the CVRF API 3.0 upgrade
At the Microsoft Security Response Center, we are committed to continuously improving the security and performance of our services to meet the evolving needs of our customers. We are excited to announce the rollout of the latest version of our Common Vulnerability Reporting CVRF API. This update...
Microsoft mitigates Power Platform Custom Code information disclosure vulnerability
Summary On 30 March 2023, Tenable informed Microsoft under Coordinated Vulnerability Disclosure CVD of a security issue concerning Power Platform Custom Connectors using Custom Code. This feature allows customers to write code for custom connectors. This issue has been fully addressed for all...
Configuring host-level audit logging for AKS VMSS
This blog post runs you through how to enable and configure Linux audit logging on your Azure Kubernetes Service AKS Virtual Machine Scale Set VMSS using the Linux auditing subsystem, also known as auditd. Warning The information provided below is accurate as of the release date of this blog post...
BlueHat 2023: Connecting the security research community with Microsoft
We’re excited to welcome more than 400 members of the security research community from around the world to Redmond, Washington for BlueHat 2023. Hosted by the Microsoft Security Response Center MSRC, BlueHat is where the security research community, and Microsoft security professionals, come...