Detecting and mitigating elevation-of-privilege exploit for CVE-2017-0005

Credit to Author: msft-mmpc| Date: Mon, 27 Mar 2017 15:00:01 +0000

On March 14, 2017, Microsoft released security bulletin MS17-013 to address CVE-2017-0005, a vulnerability in the Windows Win32k component that could potentially allow elevation of privileges. A report from a trusted partner identified a zero-day exploit for this vulnerability. The exploit targeted older versions of Windows and allowed attackers to elevate process privileges on these platforms. In this article, we…

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Pwn2Own ends with two virtual machine escapes

Credit to Author: Lucian Constantin| Date: Mon, 20 Mar 2017 12:08:00 -0700

Two teams of researchers managed to win the biggest bounties at this year’s Pwn2Own hacking contest by escaping from the VMware Workstation virtual machine and executing code on the host operating system.

Virtual machines are in used in many scenarios to create throw-away environments that pose no threat to the main operating system in case of compromise. For example, many malware researchers execute malicious code or visit compromise websites inside virtual machines to observe their behavior and contain their impact.

One of the main goals of hypervisors like VMware Workstation is to create a barrier between the guest operating system that runs inside the virtual machine and the host OS where the hypervisor runs. That’s why VM escape exploits are highly prized, more so than browser or OS exploits.

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Tax-themed phishing and malware attacks proliferate during the tax filing season

Credit to Author: msft-mmpc| Date: Mon, 20 Mar 2017 12:50:12 +0000

Tax-themed scams and social engineering attacks are as certain as (death or) tax itself. Every year we see these attacks, and 2017 is no different. These attacks circulate year-round as cybercriminals take advantage of the different country and region tax schedules, but they peak in the months leading to U.S. Tax Day in mid-April. Cybercriminals are using a variety of…

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Ransomware operators are hiding malware deeper in installer packages

Credit to Author: msft-mmpc| Date: Thu, 16 Mar 2017 03:15:46 +0000

We are seeing a wave of new NSIS installers used in ransomware campaigns. These new installers pack significant updates, indicating a collective move by attackers to once again dodge AV detection by changing the way they package malicious code. These changes are observed in installers that drop ransomware like Cerber, Locky, and others. Cybercriminals have…

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Microsoft fixes record number of flaws, some publicly known

Credit to Author: Lucian Constantin| Date: Wed, 15 Mar 2017 11:54:00 -0700

Microsoft’s batch of security patches for March is one of the largest ever and includes fixes for several vulnerabilities that are publicly known and actively exploited.

The company published 17 security bulletins covering 135 vulnerabilities in its own products and one separate bulletin for Flash Player, which has its security patches distributed through Windows Update. Nine bulletins are rated critical and nine are rated as important.

The affected products include Windows, Internet Explorer, Microsoft Edge, Microsoft Office, Exchange, Skype for Business, Microsoft Lync, and Silverlight.

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IDG Contributor Network: Largest ever Patch Tuesday from Microsoft

Credit to Author: Greg Lambert| Date: Wed, 15 Mar 2017 11:44:00 -0700

After last month’s rather brief Patch Tuesday from Microsoft, we see the largest ever release of updates for Windows and Microsoft Office — and of course another critical update for Adobe Flash Player.

For this March update, we see an unusually large number of critical updates — nine patches rated as critical and the remaining nine rated by Microsoft as important. In addition to this large cohort of patches, we also get a security advisory with KB3123479.

We have added both browser patches (MS17-006 and MS17-007) and the Adobe Flash Player update (MS17-023) to our “Patch Now” list. In addition, the core XML Services patch (MS17-022), though only rated as important by Microsoft, attempts to resolve a publicly disclosed zero-day flaw. MS17-022 was therefore also added to our “Patch Now” list.

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Microsoft stays security bulletins' termination

Credit to Author: Gregg Keizer| Date: Tue, 14 Mar 2017 13:17:00 -0700

Microsoft today postponed the retirement of the security bulletins that for nearly two decades have described in detail the month’s slate of vulnerabilities and accompanying patches.

The bulletins’ last stand was originally scheduled for January, with a replacement process ready to step in Feb. 14. Rather than a set of bulletins, Microsoft was to provide a searchable database of support documents dubbed the “Security Updates Guide” or SUG.

But just hours before February’s security updates were to be released, Microsoft announced that it was postponing the entire collection to March 14, citing “a last-minute issue” that might impact some customers. The Redmond, Wash. company never spelled out exactly what led it to decide on the unprecedented delay.

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Uncovering cross-process injection with Windows Defender ATP

Credit to Author: msft-mmpc| Date: Thu, 09 Mar 2017 06:16:01 +0000

Windows Defender Advanced Threat Protection (Windows Defender ATP) is a post-breach solution that alerts security operations (SecOps) personnel about hostile activity. As the nature of attacks evolve, Windows Defender ATP must advance so that it continues to help SecOps personnel uncover and address the attacks. With increasing security investments from Microsoft—read how Windows 10 continues to raise…

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