Tuesday, August 09, 2011
Hello all. It has been very nearly a week since our BlueHat Prize contest announcement at Black Hat. Now that everyone’s had some time to digest the basics, we’ve asked Senior Security Strategist and chief BlueHat Prize architect Katie Moussouris to stop by the Trustworthy Computing studio today at 11 a.
Tuesday, June 14, 2011
Today we released 16 security bulletins. Nine have a maximum severity rating of Critical and seven have a maximum severity rating of Important. This release addresses several publicly disclosed vulnerabilities. We hope that the table below helps you prioritize the deployment of the updates appropriately for your environment. Bulletin Most likely attack vector Max Bulletin Severity Max Exploit-ability rating Likely first 30 days impact Platform mitigations and key notes MS11-050(IE) Victim browses to a malicious webpage.
Tuesday, June 14, 2011
Hello there. First off, I’d like to share some news regarding the updates we made to the Autorun feature in Security Advisory 967940, which we released in February 2011. The advisory made changes to how Autorun handles “non-shiny” media (eg., USB thumb drives). The change was expected to make a significant difference to infection rates by malware that uses Autorun to propagate, and we’ve been monitoring those rates ever since.
Tuesday, June 14, 2011
Today, we released MS11-050, a cumulative security update for Internet Explorer to address several vulnerabilities in IE9. The following table lists the CVEs included in MS11-050, and whether each affects IE8 or IE9. CVE Rating IE8 IE9 CVE-2011-1246 Moderate Yes No CVE-2011-1258 Moderate Yes No CVE-2011-1252 Important Yes No CVE-2011-1256 Important Yes No CVE-2011-1255 Critical Yes No CVE-2011-1254 Critical Yes No CVE-2011-1251 Critical Yes No CVE-2011-1250 Critical Yes Yes CVE-2011-1260 Critical Yes Yes CVE-2011-1261 Critical Yes Yes CVE-2011-1262 Critical Yes Yes As shown above, only a minor fraction of vulnerabilities affecting IE8 (and earlier versions of the browser) would still affect IE9.
Thursday, June 09, 2011
Before we get into this month’s release, we wanted to alert you to updates to a document that’s been central to much of how Microsoft thinks about security. Ten years ago, Microsoft penned the “Ten Immutable Laws of Security,” which debuted on TechNet. It was written before the rise of – among other technologies and trends – cloud computing, social networking, widespread smartphone adoption, and Windows XP, to name but a few landmarks along the way.
Tuesday, April 12, 2011
Today Microsoft released MS11-018 addressing one of the three vulnerabilities that were used to win the Pwn2Own contest last month at CanSecWest 2011. It took three vulnerabilities to successfully compromise IE8 and meet all the requirements of the organizers. The vulnerability we are fixing today, a use-after-free which does not affect IE9, was the primary vulnerability used to gain code execution.
Tuesday, February 08, 2011
Hello all – Today, as part of our monthly security bulletin release, we have 12 bulletins addressing 22 vulnerabilities in Microsoft Windows, Office, Internet Explorer, and IIS (Internet Information Services). Three bulletins are rated Critical, and these are the bulletins we recommend for priority deployment: o MS11-003. This bulletin resolves three critical-level and moderate-level vulnerabilities affecting all versions of Internet Explorer.
Friday, January 28, 2011
Today we released Security Advisory 2501696 to alert customers to a publicly disclosed vulnerability in the MHTML protocol handler. This vulnerability could allow attackers to construct malicious links pointing to HTML documents that, when clicked, would render the targeted document and reflected script in the security context of the user and target location.
Tuesday, January 11, 2011
We have just updated Security Advisory 2488013 for the publicly-disclosed Internet Explorer CSS vulnerability. It now reflects the fact that limited attacks attempting to exploit this vulnerability are present in-the-wild. The advisory also includes a new workaround that can help protect your computers until a security update is available. This workaround is different from the workarounds that we typically recommend, and so we wanted to give you more detail about it here.
Wednesday, December 22, 2010
Today we released Security Advisory 2488013 to notify customers of a new publicly-disclosed vulnerability in Internet Explorer (IE). This vulnerability affects all versions of IE. Exploiting this vulnerability could lead to unauthorized remote code execution inside the iexplore.exe process. Proof-of-concept exploit bypasses ASLR and DEP The Metasploit project recently published an exploit for this vulnerability using a known technique to evade ASLR (Address Space Layout Randomization) and bypass DEP (Data Execution Prevention).
