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Mitigating SSRF Vulnerabilities Impacting Azure Machine Learning

Monday, June 17, 2024

Summary On May 9, 2024, Microsoft successfully addressed multiple vulnerabilities within the Azure Machine Learning (AML) service, which were initially discovered by security research firms Wiz and Tenable. These vulnerabilities, which included Server-Side Request Forgeries (SSRF) and a path traversal vulnerability, posed potential risks for information exposure and service disruption via Denial-of-Service (DOS).

Microsoft Response to Distributed Denial of Service (DDoS) Attacks against HTTP/2

Tuesday, October 10, 2023

Summary Beginning in September 2023, Microsoft was notified by industry partners about a newly identified Distributed Denial-of-Service (DDoS) attack technique being used in the wild targeting HTTP/2 protocol. This vulnerability (CVE-2023-44487) impacts any internet exposed HTTP/2 endpoints. As an industry leader, Microsoft promptly opened an investigation and subsequently began working with industry partners for a coordinated disclosure and mitigation plan.

Microsoft mitigated exposure of internal information in a storage account due to overly-permissive SAS token

Monday, September 18, 2023

Summary As part of a recent Coordinated Vulnerability Disclosure (CVD) report from, Microsoft investigated and remediated an incident involving a Microsoft employee who shared a URL for a blob store in a public GitHub repository while contributing to open-source AI learning models. This URL included an overly-permissive Shared Access Signature (SAS) token for an internal storage account.

January 2020 Security Updates: CVE-2020-0601

Tuesday, January 14, 2020

The January security updates include several Important and Critical security updates. As always, we recommend that customers update their systems as quickly as practical. Details for the full set of updates released today can be found in the Security Update Guide. We believe in Coordinated Vulnerability Disclosure (CVD) as proven industry best practice to address security vulnerabilities.

Inside the MSRC – Customer-centric incident response

Tuesday, June 25, 2019

The Microsoft Security Response Center (MSRC) is an integral part of Microsoft’s Cyber Defense Operations Center (CDOC) that brings together security response experts from across the company to help protect, detect, and respond to threats in real-time. Staffed with dedicated teams 24x7, the CDOC has direct access to thousands of security professionals, data scientists, and product engineers throughout Microsoft to ensure rapid response and resolution to security threats.

Bug Bounty Evolution: Online Services

Tuesday, September 23, 2014

Today marks the next evolution in bounty programs at Microsoft as we launch the Microsoft Online Services Bug Bounty program starting with Office 365. In our mobile first, cloud first world, this is an exciting and logical evolution to our existing bug bounty programs. Office 365 is the first of our online services groups to launch a bounty for vulnerabilities found in their services and we will bring others into the program as we go forward.

New Bounty Programs – One Week In

Wednesday, July 03, 2013

Two weeks ago, Microsoft made an important evolutionary step in our work with the security community when we announced our first-ever bounty programs for security issues. One week ago, the Windows 8.1 Preview and Internet Explorer 11 Preview became available for download, and the doors officially opened for bounty-eligible submissions to secure [at] Microsoft [dot] com.

Coordinated Vulnerability Disclosure Reloaded

Tuesday, April 19, 2011

Today on the MSRC Blog, Matt Thomlinson announced three new efforts to provide more transparency into Microsoft’s vulnerability disclosure process. These included a Coordinated Vulnerability Disclosure (CVD) at Microsoft procedures document, the first release of MSVR Advisories on vulnerabilities that were discovered by Microsoft and fixed by affected vendors, and an internal employee disclosure policy.