Posts Tagged: Microsoft Patch Tuesday


13
Aug 19

Patch Tuesday, August 2019 Edition

Most Microsoft Windows (ab)users probably welcome the monthly ritual of applying security updates about as much as they look forward to going to the dentist: It always seems like you were there just yesterday, and you never quite know how it’s all going to turn out. Fortunately, this month’s patch batch from Redmond is mercifully light, at least compared to last month.

Okay, maybe a trip to the dentist’s office is still preferable. In any case, today is the second Tuesday of the month, which means it’s once again Patch Tuesday (or — depending on your setup and when you’re reading this post — Reboot Wednesday). Microsoft today released patches to fix some 93 vulnerabilities in Windows and related software, 35 of which affect various Server versions of Windows, and another 70 that apply to the Windows 10 operating system.

Although there don’t appear to be any zero-day vulnerabilities fixed this month — i.e. those that get exploited by cybercriminals before an official patch is available — there are several issues that merit attention.

Chief among those are patches to address four moderately terrifying flaws in Microsoft’s Remote Desktop Service, a feature which allows users to remotely access and administer a Windows computer as if they were actually seated in front of the remote computer. Security vendor Qualys says two of these weaknesses can be exploited remotely without any authentication or user interaction.

“According to Microsoft, at least two of these vulnerabilities (CVE-2019-1181 and CVE-2019-1182) can be considered ‘wormable’ and [can be equated] to BlueKeep,” referring to a dangerous bug patched earlier this year that Microsoft warned could be used to spread another WannaCry-like ransomware outbreak. “It is highly likely that at least one of these vulnerabilities will be quickly weaponized, and patching should be prioritized for all Windows systems.”

Fortunately, Remote Desktop is disabled by default in Windows 10, and as such these flaws are more likely to be a threat for enterprises that have enabled the application for various purposes. For those keeping score, this is the fourth time in 2019 Microsoft has had to fix critical security issues with its Remote Desktop service.

For all you Microsoft Edge and Internet Exploiter Explorer users, Microsoft has issued the usual panoply of updates for flaws that could be exploited to install malware after a user merely visits a hacked or booby-trapped Web site. Other equally serious flaws patched in Windows this month could be used to compromise the operating system just by convincing the user to open a malicious file (regardless of which browser the user is running). Continue reading →


12
May 15

Adobe, Microsoft Push Critical Security Fixes

Microsoft today issued 13 patch bundles to fix roughly four dozen security vulnerabilities in Windows and associated software. Separately, Adobe pushed updates to fix a slew of critical flaws in its Flash Player and Adobe Air software, as well as patches to fix holes in Adobe Reader and Acrobat.

brokenwindowsThree of the Microsoft patches earned the company’s most dire “critical” rating, meaning they fix flaws that can be exploited to break into vulnerable systems with little or no interaction on the part of the user. The critical patches plug at least 30 separate flaws. The majority of those are included in a cumulative update for Internet Explorer. Other critical fixes address problems with the Windows OS, .NET, Microsoft Office, and Silverlight, among other components.

According to security vendor Shavlik, the issues address in MS15-044 deserve special priority in patching, in part because it impacts so many different Microsoft programs but also because the vulnerabilities fixed in the patch can be exploited merely by viewing specially crafted content in a Web page or a document. More information on and links to today’s individual updates can be found here.

Adobe’s fix for Flash Player and AIR fix at least 18 security holes in the programs. Updates are available for Windows, OS X and Linux versions of the software. Mac and Windows users, the latest, patched version is v. 17.0.0.188.  Continue reading →


8
Apr 14

Adobe, Microsoft Push Critical Fixes

Adobe and Microsoft each issued updates to fix critical security vulnerabilities in their software today. Adobe patched its Flash Player software and Adobe AIR. Microsoft issued four updates to address at least 11 unique security flaws, including its final batch of fixes for Office 2003 and for systems powered by Windows XP.

crackedwinTwo of the four patches that Microsoft issued come with Redmond’s “critical” rating (its most severe), meaning attackers or malware can exploit the flaws to break into vulnerable systems without any help from users. One of the critical patches is a cumulative update for Internet Explorer (MS14-018); the other addresses serious issues with Microsoft Word and Office Web apps (MS14-017), including a fix for a zero-day vulnerability that is already being actively exploited. More information on these and other patches are available here.

As expected, Microsoft also used today’s patch release to pitch XP users on upgrading to a newer version of Windows, warning that attackers will begin to zero in on XP users even more now that Microsoft will no longer be issuing security updates for the 13-year-old operating system. From Microsoft’s Technet blog: Continue reading →