Mitigations | Microsoft Security Response Center

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

Monday, May 23, 2022

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 attacks affecting websites and other online services.

Randomizing the KUSER_SHARED_DATA Structure on Windows

Tuesday, April 05, 2022

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 of memory that has always been traditionally mapped at a fixed virtual address in the kernel.

Mitigations

Solving Uninitialized Stack Memory on Windows

Wednesday, May 13, 2020

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 Uninitialized Memory Vulnerabilities InitAll – Automatic Initialization Interesting Findings with InitAll Performance Optimizations Impact for Customers Forward Looking Plans None of this work would have been possible without close partnership between the Visual Studio organization, the Windows organization, and MSRC.

Standing behind “MSRC Listens”

Tuesday, October 02, 2018

Last week at BlueHat’s “MSRC Listens” session, I took the stage with Mechele Gruhn, manager of the Vulnerability Response PM team, to explain how MSRC is changing our communication, workflows, and tooling to deliver an improved user experience for our partners in the security research community. We promised to communicate more about what’s happening in the MSRC that affects our customers and research partners.

Windows 10: 強化された脆弱性緩和技術で攻撃のコストを上げる

Wednesday, September 23, 2015

システムやアプリケーションの脆弱性を悪用し、不正なコードと置き換えて実行させるのは典型的な攻撃手法の

EMET 5.2 is available (update)

Monday, March 16, 2015

Today, we’re releasing the Enhanced Mitigation Experience Toolkit (EMET) 5.2, which includes increased security protections to improve your security posture. You can download EMET 5.2 from microsoft.com/emet or directly from here. Following is the list of the main changes and improvements: Control Flow Guard: EMET’s native DLLs have been compiled with Control Flow Guard (CFG).

Assessing risk for the August 2014 security updates

Tuesday, August 12, 2014

Today we released nine security bulletins addressing 37 unique CVE’s. Two bulletins have a maximum severity rating of Critical while the other seven have a maximum severity rating of Important. This table is designed to help you prioritize the deployment of updates appropriately for your environment. Bulletin Most likely attack vector Max Bulletin Severity Max exploit-ability Likely first 30 days impact Platform mitigations and key notes MS14-051(Internet Explorer) Victim browses to a malicious webpage.

General Availability for Enhanced Mitigation Experience Toolkit (EMET) 5.0

Thursday, July 31, 2014

Today, we are excited to announce the general availability of Enhanced Mitigation Experience Toolkit (EMET) 5.0. EMET is a free tool, designed to help customers with their defense in depth strategies against cyberattacks, by helping block and terminate the most common techniques adversaries might use in comprising systems. EMET 5.0 further helps to protect with two new mitigations, and with new capabilities giving customers additional flexibility on their deployments.

Assessing risk for the June 2014 security updates

Tuesday, June 10, 2014

Today we released seven security bulletins addressing 66 unique CVE’s. Two bulletins have a maximum severity rating of Critical while the other five have a maximum severity rating of Important. This table is designed to help you prioritize the deployment of updates appropriately for your environment. Bulletin Most likely attack vector Max Bulletin Severity Max XI Likely first 30 days impact Platform mitigations and key notes MS14-035 (Internet Explorer) Victim browses to a malicious webpage.

Assessing risk for the May 2014 security updates

Tuesday, May 13, 2014

Today we released eight security bulletins addressing 13 unique CVE’s. Two bulletins have a maximum severity rating of Critical while the other six have a maximum severity rating of Important. The table is designed to help you prioritize the deployment of updates appropriately for your environment. Bulletin Most likely attack vector Max Bulletin Severity Max exploit-ability Likely first 30 days impact Platform mitigations and key notes MS14-029(Internet Explorer) Victim browses to a malicious webpage.