Microsoft Security Response Center Blog

Awareness and guidance related to potential Service Fabric Explorer (SFX) v1 web client risk

Wednesday, October 19, 2022

Summary Microsoft was recently made aware of a Cross-Site Scripting (XSS) vulnerability (CVE-2022-35829), that under limited circumstances, affects older versions of Service Fabric Explorer (SFX). The current default SFX web client (SFXv2) is not vulnerable to this attack. However, customers can manually switch from the default web client (SFXv2) to an older vulnerable SFX web client version (SFXv1).

Investigation Regarding Misconfigured Microsoft Storage Location

Wednesday, October 19, 2022

October 28, 2022 update: Added a Customer FAQ section. Summary Security researchers at SOCRadar informed Microsoft on September 24, 2022, of a misconfigured Microsoft endpoint. This misconfiguration resulted in the potential for unauthenticated access to some business transaction data corresponding to interactions between Microsoft and prospective customers, such as the planning or potential implementation and provisioning of Microsoft services.

BlueHat 2023 Call for Papers is Now Open!

Thursday, October 13, 2022

For nearly 20 years, BlueHat has been where the security research community, and Microsoft security professionals come together as peers, to share, debate, challenge, learn, and exchange ideas in the interest of creating a safer and more secure world for all. We are extremely excited to announce that BlueHat is back in-person and the 2023 Call for Papers (CFP) is now open through December 8!

Hunting for Cobalt Strike: Mining and plotting for fun and profit

Thursday, October 13, 2022

Introduction Cobalt Strike is a commercial Command and Control framework built by Helpsystems. You can find out more about Cobalt Strike on the MITRE ATT&CK page. But it can also be used by real adversaries. In this post we describe how to use RiskIQ and other Microsoft technologies to see if you have Cobalt Strike payloads (also called “beacons”) in your network.

Improvements in Security Update Notifications Delivery - And a New Delivery Method

Wednesday, October 12, 2022

At MSRC, we are passionate about ensuring our customers have a positive experience when they use the Microsoft Security Update Guide (SUG). A big part of improving that experience is ensuring that customers have timely and easily accessible notifications. As such we have two important announcements to share about changes to the way we provide notifications.

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

Friday, September 30, 2022

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 more information, review the Exchange Team blog. Summary On November 8 Microsoft released security updates for two zero-day vulnerabilities affecting Microsoft Exchange Server 2013, Exchange Server 2016, and Exchange Server 2019.

• Microsoft Exchange

Defense-in-Depth Updates for Azure Identity libraries and Azure Key Vault libraries within Azure SDK plus Best Practice Implementation Guidance

Tuesday, September 20, 2022

Summary Today, Microsoft released new versions of the Azure Key Vault libraries and Azure Identity libraries as part of the Azure Software Development Kit (SDK) that includes defense-in-depth feature improvements. We also published best practice guidance to help protect applications and services that allow externally controlled input into the Azure Key Vault client URI for processing.

Curious, Innovative, Creative, Community Driven: Meet Cyb3rWard0g, Roberto Rodriquez

Wednesday, September 07, 2022

When I grow up I want to be? Dancer or a veterinarian Happiest memories: Tearing up the dance floor at weddings and playing soccer in the streets of Lima, Peru Previous Job roles : Mopped floors for McDonalds, packed boxes at an Avon warehouse, Manager at Olive Garden, Beer taster/server and then dove into tech and security

What’s the smallest variety of CHERI?

Tuesday, September 06, 2022

The Portmeirion project is a collaboration between Microsoft Research Cambridge, Microsoft Security Response Center, and Azure Silicon Engineering & Solutions. Over the past year, we have been exploring how to scale the key ideas from CHERI down to tiny cores on the scale of the cheapest microcontrollers. These cores are very different from the desktop and server-class processors that have been the focus of the Morello project.

Vulnerability Fixed in Azure Synapse Spark

Thursday, September 01, 2022

Summary Microsoft takes a proactive approach to continually probe our defenses, hunt for vulnerabilities, and seek new, innovative ways to protect our customers. Security researchers are an important part of this effort, and our collaborative partnership is critical in a world where cybersecurity attacks continue to grow in number and sophistication.