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Microsoft Patch Tuesday for February 2015: 56 vulnerabilities fixed

Microsoft’s Patch Tuesday for February 2015 has arrived.  This month’s round of security updates is large with Microsoft releasing 9 bulletins addressing 56 CVEs.  3 of the bulletins are rated critical and address vulnerabilities within Internet Explorer, Windows, and Group Policy.  The remaining 6 bulletins are rated important and address vulnerabilities in Office, Windows, Group Policy, and System Center Manager.

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Angler Exploit Kit – New Variants

This post was authored by Nick Biasini

On January 27th,  Talos researchers began observing a new Angler Exploit Kit (EK) campaign using new variants associated with (CVE-2015-0311). Based on our telemetry data the campaign lasted from January 26th until January 30th with the majority of the events occurring on January 28th & 29th.

angler_dates

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Flash 0-day Exploited by Angler Exploit Kit

This post was authored by Nick Biasini, Earl Carter and Jaeson Schultz

Flash has long been a favorite target among Exploit Kits (EK). In October 2014 the Angler EK was believed to be targeting a new Flash vulnerability. The bug that the Angler exploit kit was attempting to exploit had been “accidentally” patched by Adobe’s APSB14-22 update. According to F-Secure, the vulnerability that Angler was actually attempting to exploit was an entirely new bug, CVE-2014-8439. The bug was severe enough that Adobe fixed it out-of-band.

Fast forward to January 2015. With the emergence of this new Flash 0-day bug, we have more evidence that the Angler Exploit Kit developers are actively working on discovering fresh bugs in Flash for themselves. The group is incorporating these exploits into the Angler EK *before* the bugs are publicized. Considering these 0-day exploits are being used alongside one of Angler’s preferred methods of distribution, malvertising, thus intensifying the potential for large-scale compromise. Read More »

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Microsoft Update Tuesday January 2015: Another Light Month, No IE Bulletins, More Changes to Reporting

This post was written by Yves Younan.

Microsoft’s first Update Tuesday of 2015 is pretty light, there’s a total of eight bulletins, all covering a single vulnerability. Seven of these bulletins are rated as important and just one is rated critical. No bulletin for IE is being released this month. Two of the vulnerabilities were publicly disclosed prior to today, while another one was being actively exploited by attackers.

Microsoft made a number of changes to Update Tuesday last month, such as dropping deployment priority in favor of their exploitability index (XI). This month more changes were made to the program: Microsoft is no longer providing their Advance Notification Service (ANS) to the general public, but is instead only providing it to premier customers.

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Microsoft Patch Tuesday for December 2014: Light Month, Some Changes

This post was authored by Yves Younan.

Today, Microsoft is releasing their final Update Tuesday of 2014. Last year, the end of year update was relatively large. This time, it’s relatively light with a total of seven bulletins, covering 24 CVEs. Three of those bulletins are rated critical and four are considered to be important. Microsoft has made a few changes to the way they report their bulletins. Microsoft has dropped the deployment priority (DP) rating, which was very much environment-specific and might not be all that useful for non-default installations. Instead, they are now providing an exploitability index (XI), which ranges from zero to three. With zero denoting active exploitation and three denoting that it’s unlikely that the vulnerability would be exploited. Another change is to more clearly report on how the vulnerability was disclosed: was Microsoft notified via coordinated vulnerability disclosure or was the vulnerability publicly known before being released? Read More »

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