Microsoft fixes 9 flaws, Adobe 3 in April's Tuesday update

Filed Under: Adobe, Adobe Flash, Featured, Internet Explorer, Microsoft, Vulnerability, Windows

patchtuesday170No surprises, simply time to do your monthly duty on the second Tuesday of the month. No, not clean the fish tank, apply your Microsoft and Adobe fixes!

As Paul pointed out last week, there are nine updates released today covering Windows, Internet Explorer, SharePoint, Defender and InfoPath.

The speculation around the Internet Explorer patch (MS13-028) fixing the PWN2OWN vulnerability disclosed by VUPEN was untrue.

The critical patch for Internet Explorer fix two vulnerabilities reported to Microsoft by Google researchers that could result in remote code execution (RCE). This fix requires a reboot, but should be considered of the highest priority.

The second critical patch that could result in RCE is for the Microsoft RDP Desktop Connection Client ActiveX control. Users of Internet Explorer could be vulnerable to a specially crafted web page designed to exploit the RDP controls.

Five of the remaining seven vulnerabilities are elevation of privilege (EoP) flaws that allow restricted users to gain administrative authority.

This type of vulnerability is becoming more important as fewer and fewer users run as Administrator by default.

The remaining vulnerabilities include a denial of service (DoS) and an information disclosure.

Adobe FlashAdobe released critical fixes for Flash and Shockwave today, as well as an important fix for users of ColdFusion.

The ColdFusion fixes address two CVEs in versions 9 and 10. Details are available in bulletin APSB13-10.

The most critical fixes are the four CVEs in Adobe Flash player that could allow RCE or "driveby" attacks like we frequently see from exploit kits like Blackhole.

The latest Flash player is always available from

Last, but not least, there are also four critical vulnerabilities in Adobe Shockwave player. I would recommend updating it, but to be fair you should probably remove it. If you insist on keeping it you can retrieve the latest from

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3 Responses to Microsoft fixes 9 flaws, Adobe 3 in April's Tuesday update

  1. JimboC_Security · 913 days ago

    The full installers for Adobe Flash (for Mac, Linux and Windows) can be obtained from the following link (which does not offer any other 3rd party software):

    I hope this helps. Thank you.

  2. MikeP_UK · 912 days ago

    Note that Adobe Air has also been updated from to

    The usual Adobe Flash download covers the NPAPI element only but the ActiveX element has also been updated and has to be obtained separately.

    I use Secunia PSI 2.0 to manage such updates.

  3. Seven · 899 days ago

    Adobe keeps updating Flash Player!! It was fine until v. 11.6.602.180, but since then it now states a minimum processor speed of 2.33GHz & mine is dual core 2.17GHz. Is it worth trying to install it & seeing if it works?? If not, what alternatives are there? Just uninstall it??

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About the author

Chester Wisniewski is a Senior Security Advisor at Sophos Canada. He provides advice and insight into the latest threats for security and IT professionals with the goal of providing clear guidance on complex topics. You can follow Chester on Twitter as @chetwisniewski, on as Chester, Chester Wisniewski on Google Plus or send him an email at