April 2021 Update Tuesday packages now available

Source: https://msrc-blog.microsoft.com/blog/2021/04/april-2021-update-tuesday-packages-now-available/ Update August 25, 2021: Microsoft strongly recommends that you update your servers with the most recent security updates available. CVE-2021-34473 (ProxyShell) CVE-2021-34523 (ProxyShell) CVE-2021-33766 Today is Update Tuesday – our … Read more

Guidance for responders: Investigating and remediating on-premises Exchange Server vulnerabilities

Source: https://msrc-blog.microsoft.com/blog/2021/03/guidance-for-responders-investigating-and-remediating-on-premises-exchange-server-vulnerabilities/ This guidance will help customers address threats taking advantage of the recently disclosed Microsoft Exchange Server on-premises vulnerabilities CVE-2021-26855, CVE-2021-26858, CVE-2021-26857, and CVE-2021-27065, which are being exploited. We strongly urge … Read more

Microsoft Internal Solorigate Investigation – Final Update

Source: https://msrc-blog.microsoft.com/blog/2021/02/microsoft-internal-solorigate-investigation-final-update/ We believe the Solorigate incident is an opportunity to work with the community, to share information, strengthen defenses and respond to attacks. We have now completed our internal investigation into … Read more

Microsoft Launches Phase 2 Mitigation for Netlogon Remote Code Execution Vulnerability (CVE-2020-1472)

Source: https://us-cert.cisa.gov/ncas/current-activity/2021/02/10/microsoft-launches-phase-2-mitigation-netlogon-remote-code Original release date: February 10, 2021 Microsoft addressed a critical remote code execution vulnerability affecting the Netlogon protocol (CVE-2020-1472) on August 11, 2020. Beginning with the February 9, 2021 Security … Read more

MSRC Security Researcher Recognition: 2021

Source: https://msrc-blog.microsoft.com/blog/2021/02/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 … Read more

Microsoft Warns of Windows Win32k Privilege Escalation

Source: https://us-cert.cisa.gov/ncas/current-activity/2021/02/09/microsoft-warns-windows-win32k-privilege-escalation Original release date: February 9, 2021 Microsoft has released a security advisory to address an escalation of privileges vulnerability, CVE-2021-1732, in Microsoft Win32k. A local attacker can exploit this vulnerability … Read more

Continuing to Listen: Good News about the Security Update Guide API!

Source: https://msrc-blog.microsoft.com/blog/2021/02/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 … Read more

Top MSRC 2020 Q4 Security Researchers – Congratulations!

Source: https://msrc-blog.microsoft.com/blog/2021/01/top-msrc-2020-q4-security-researchers-congratulations/ We’re excited to announce the top contributing researchers for the 2020 Fourth Quarter (Q4)! Congratulations to all of the researchers who made this quarter’s leaderboard and a huge thank you … Read more

Netlogon Domain Controller Enforcement Mode is enabled by default beginning with the February 9, 2021 Security Update, related to CVE-2020-1472

Source: https://msrc-blog.microsoft.com/blog/2021/01/netlogon-domain-controller-enforcement-mode-is-enabled-by-default-beginning-with-the-february-9-2021-security-update-related-to-cve-2020-1472/ Microsoft addressed a Critical RCE vulnerability affecting the Netlogon protocol (CVE-2020-1472) on August 11, 2020. We are reminding our customers that beginning with the February 9, 2021 Security Update release … Read more

Microsoft Internal Solorigate Investigation Update

Source: https://msrc-blog.microsoft.com/blog/2020/12/microsoft-internal-solorigate-investigation-update/ As we said in our recent blog, we believe the Solorigate incident is an opportunity to work together in important ways, to share information, strengthen defenses and respond to attacks. … Read more

Nobelium Resource Center – updated March 4, 2021

Source: https://msrc-blog.microsoft.com/blog/2020/12/december-21st-2020-solorigate-resource-center/ ** UPDATE: ** Microsoft continues to work with partners and customers to expand our knowledge of the threat actor behind the nation-state cyberattacks that compromised the supply chain of SolarWinds … Read more

Customer Guidance on Recent Nation-State Cyber Attacks

Source: https://msrc-blog.microsoft.com/blog/2020/12/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 … Read more

Security Update Guide: Let's keep the conversation going

Source: https://msrc-blog.microsoft.com/blog/2020/12/security-update-guide-lets-keep-the-conversation-going/ Hi Folks, We want to continue to highlight changes we’ve made to our Security Update Guide. We have received a lot of feedback, much of which has been very positive. … Read more