Year: 2021

「Microsoft Exchange Server Vulnerabilities Mitigations – March 2021」の日本語抄訳です。 マイクロソフトは先週公開したブログにて、

Update March 15, 2021: If you have not yet patched, and have not applied the mitigations referenced below, a one-click tool, the Exchange On-premises Mitigation Tool is now our recommended path to mitigate until you can patch.
Microsoft previously blogged our strong recommendation that customers upgrade their on-premises Exchange environments to the latest supported version.

The Notice of Copyright or Trademark Infringement Portal has helped protect Microsoft’s users and customers from intellectual property infringement across online services like Microsoft Azure, Office, Outlook, Skype, Stream, Microsoft News, Sway, Hotmail, NuGet, and Yammer. Microsoft’s response to claims of intellectual property infringement is driven by the reports you send us.

On March 2nd, we released several security updates for Microsoft Exchange Server to address vulnerabilities that are being used in ongoing attacks. Due to the critical nature of these vulnerabilities, we recommend that customers protect their organizations by applying the patches immediately to affected systems.
The vulnerabilities affect Exchange Server versions 2013, 2016, and 2019, while Exchange Server 2010 is also being updated for defense-in-depth purposes.

2021 年 3 月 3 日 (日本時間)、マイクロソフトは限定的な標的型攻撃に使われた Exchange の脆弱性に対するセキュリティ

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 the activity of the actor and want to share our findings, which confirm that we found no evidence of access to production services or customer data.

「Multiple Security Updates Affecting TCP/IP: CVE-2021-24074, CVE-2021-24094, and CVE-2021-24086」の日本語抄訳です。 2021 年 2 月 9 日 (日本時

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 different paths you can take to get into the top researcher tiers.
The MSRC Most Valuable Security Researcher (MVR) and MSRC Contributor are tiers in the Researcher Recognition Program which annually recognize researchers for impactful contributions, considering report impact, accuracy and volume.

Today Microsoft released a set of fixes affecting Windows TCP/IP implementation that include two Critical Remote Code Execution (RCE) vulnerabilities (CVE-2021-24074, CVE-2021-24094) and an Important Denial of Service (DoS) vulnerability (CVE-2021-24086). The two RCE vulnerabilities are complex which make it difficult to create functional exploits, so they are not likely in the short term.

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 have to log in to obtain a personal API key to access the data. We’re happy to make this valuable public information more freely available and accessible.