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Updated: 25 min 13 sec ago

New Research Paper: Pre-hijacking Attacks on Web User Accounts

Mon, 05/23/2022 - 22:45
In 2020, MSRC awarded two Identity Project Research Grants to support external researchers working to further strengthen the security of identity protocols and systems. Today we are pleased to release the results of the first of these projects. This research, led by independent security researcher Avinash Sudhodanan, investigated account pre-hijacking – a new class of …

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Researcher Spotlight: Hector Peralta’s Evolution from Popcorn Server to the MSRC Leaderboards

Thu, 05/19/2022 - 14:32
“The bug bounty literally changed my life. Before this, I had nothing.” Coolest thing he purchased: His first vehicle! Best gift to give: Buying his nephew gaming accessories. Favorite Hacking Companion: His two cats. They’re always by his side when he is working late. Origin of his Hacker name: The word dog in Spanish is …

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Anatomy of a Security Update

Fri, 05/13/2022 - 17:00
The Microsoft Security Response Center is part of the defender community and on the front line of security response for our customers and the company. Our mission is to protect customers and Microsoft from current and emerging threats related to security and privacy. We monitor threats and provide updated tools and guidance to help organizations …

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

Mon, 05/09/2022 - 16:01
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 (IR) and did not impact Azure Synapse as a whole. The vulnerability could …

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Azure Database for PostgreSQL Flexible Server Privilege Escalation and Remote Code Execution

Thu, 04/28/2022 - 12:30
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 Flexible Server authentication process for a replication user, a malicious user …

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

Thu, 04/21/2022 - 16:05
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 researchers of the 2022 Q1 Security Researcher Leaderboard are: Yuki Chen, William Söderberg, …

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Expanding High Impact Scenario Awards for Microsoft Bug Bounty Programs

Thu, 04/14/2022 - 17:00
We are excited to announce the addition of scenario-based bounty awards to the Dynamics 365 and Power Platform Bounty Program and M365 Bounty Program. Through these new scenario-based bounty awards, we encourage researchers to focus their research on vulnerabilities that have the highest potential impact on customer privacy and security. Awards increase by up to …

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

Tue, 04/05/2022 - 23:41
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 service availability due to this vulnerability. Threat analysis of the …

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Randomizing the KUSER_SHARED_DATA Structure on Windows

Tue, 04/05/2022 - 18:00
Windows 10 made a lot of improvements in Kernel Address Space Layout Randomization (KASLR) that increases the cost of exploitation, particularly for remote code execution exploits. Many kernel virtual address space (VAS) locations including kernel stacks, pools, system PTEs etc. are randomized. A well-known exception to this is the KUSER_SHARED_DATA structure which is a page …

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On-Premises Servers Products are Here! Introducing the Applications and On-Premises Servers Bug Bounty Program

Tue, 04/05/2022 - 15:30
Microsoft is excited to announce the addition of Exchange on-premises, SharePoint on-premises, and Skype for Business on-premises to the Applications and On-Premises Servers Bounty Program.  Through this expanded program, we encourage researchers to discover and report high-impact security vulnerabilities to help protect customers. We offer awards up to $26,000 USD for eligible submissions. The following …

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Increasing Representation of Women in Security Research

Fri, 04/01/2022 - 00:24
Microsoft is committed to partnering with and supporting women in security research. Whether it’s growing women early in their career, or connecting people with mentors, we want to be a part of the journey. Throughout Women’s History Month we intentionally sought opportunities to engage with women in security research. Whether at an intimate gathering of …

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Randomizing the KUSER_SHARED_DATA Structure on Windows

Wed, 03/30/2022 - 18:22
Opps, this post exists, but was actually published 4/5/2022. We’re navigating you to the correct page now. If that doesn’t work click the link below: Randomizing the KUSER_SHARED_DATA Structure on Windows – Microsoft Security Response Center
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Exploring a New Class of Kernel Exploit Primitive

Tue, 03/22/2022 - 17:24
The security landscape is dynamic, changing often and as a result, attack surfaces evolve. MSRC receives a wide variety of cases spanning different products, bug types and exploit primitives. One particularly interesting primitive we see is an arbitrary kernel pointer read. These often happen when kernel mode code does not validate that pointers read from …

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

Tue, 03/08/2022 - 18:10
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. Cybercriminals are looking for any opening to tamper with security protections in order to blind, confuse, or …

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Disclosure of Vulnerability in Azure Automation Managed Identity Tokens

Mon, 03/07/2022 - 14:36
On December 10, 2021, Microsoft mitigated a vulnerability in the Azure Automation service. Azure Automation accounts that used Managed Identities tokens for authorization and an Azure Sandbox for job runtime and execution were exposed. Microsoft has not detected evidence of misuse of tokens. Microsoft has notified customers with affected Automation accounts. Microsoft recommends following the …

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Cyber threat activity in Ukraine: analysis and resources

Tue, 03/01/2022 - 02:21
Microsoft has been monitoring escalating cyber activity in Ukraine and has published analysis on observed activity in order to give organizations the latest intelligence to guide investigations into potential attacks and information to implement proactive protections against future attempts. We’ve brought together all our analysis and guidance for customers who may be impacted by events …

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Researcher Spotlight: Cyber Viking Nate Warfield is Here to Help

Fri, 02/11/2022 - 16:31
“There are few jobs where I can say, I make two billion people more secure on the internet every single day.” Childhood Look: Goth kid, all in black Current Look: Cyber Viking Childhood hobby: Head banging to Metallica, Marilyn Manson, and Guns N’ Roses Current hobby: n0x08 DJ’s Live events around the world. Check him …

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