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patches\u003C/a>\u003C/strong>\u003C/p>",[474,475],{"id":286,"title":287},{"id":283,"title":284},{"id":477,"title":478,"description":479,"plans":480},"MJlLPyxqTcy9ys2UaZYNKQ","Windows 10 v1909 patches","\u003Cp>Windows 10 1909 post-end-of-support patches\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Windows+10\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Windows 10 patches\u003C/a>\u003C/strong>\u003C/p>",[481,482],{"id":283,"title":284},{"id":286,"title":287},{"id":484,"title":485,"description":486,"plans":487},"GscjCa1TQOe5p5Or7g2qyw","Windows 10 v1809 patches","\u003Cp>Windows 10 1809 post-end-of-support patches\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Windows+10\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Windows 10 patches\u003C/a>\u003C/strong>\u003C/p>",[488,489],{"id":283,"title":284},{"id":286,"title":287},{"id":491,"title":492,"description":493,"plans":494},"OeQ8xMmJTmadIiPcKYkhvw","Windows 10 v1803 patches","\u003Cp>Windows 10 1803 post-end-of-support patches\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Windows+10\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Windows 10 patches\u003C/a>\u003C/strong>\u003C/p>",[495,496],{"id":283,"title":284},{"id":286,"title":287},{"id":498,"title":499,"description":500,"plans":501},"Obe8z8snRYGoLT6BZyzhZw","Windows 7 post-EOS and post-ESU patches","\u003Cp>Windows 7 post-end-of-support patches, for computers without Extended Security Updates (ESU), or computers with any full year of ESU updates installed\u003C/p>",[502,503],{"id":283,"title":284},{"id":286,"title":287},"Windows Patches","DXze3dvpTu-HF132vKjSug","microsoft-windows-xp",{"alt":508,"url":509,"width":510,"height":510,"responsiveImage":511},"Windows 11 logo","https://www.datocms-assets.com/166020/1764600963-win11.png",300,{"srcSet":512,"webpSrcSet":513,"sizes":514,"src":515,"width":516,"height":516,"aspectRatio":210,"alt":508,"title":18,"bgColor":517,"base64":518},"https://www.datocms-assets.com/166020/1764600963-win11.png?auto=compress&crop=focalpoint&fit=crop&h=40 40w,https://www.datocms-assets.com/166020/1764600963-win11.png?auto=compress&crop=focalpoint&dpr=1.5&fit=crop&h=40 60w,https://www.datocms-assets.com/166020/1764600963-win11.png?auto=compress&crop=focalpoint&dpr=2&fit=crop&h=40 80w,https://www.datocms-assets.com/166020/1764600963-win11.png?auto=compress&crop=focalpoint&dpr=3&fit=crop&h=40 120w,https://www.datocms-assets.com/166020/1764600963-win11.png?auto=compress&crop=focalpoint&dpr=4&fit=crop&h=40 160w","https://www.datocms-assets.com/166020/1764600963-win11.png?auto=compress&crop=focalpoint&fit=crop&fm=webp&h=40 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Server 2012 R2 post-EOS patches","\u003Cp>Windows Server 2012 R2 post-end-of-support patches, for computers without Extended Security Updates (ESU), or computers with any full year of ESU updates installed\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Windows+Server+2012+R2\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Windows Server 2012 R2 patches\u003C/a>\u003C/strong>\u003C/p>",[529,530],{"id":283,"title":284},{"id":286,"title":287},{"id":532,"title":533,"description":534,"plans":535},"ZaeezXKkT3KGln5CQ4NH9w","Windows Server 2012 post-EOS patches","\u003Cp>Windows Server 2012 post-end-of-support patches, for computers without Extended Security Updates (ESU), or computers with any full year of ESU updates installed\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Windows+Server+2012\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Windows Server 2012 patches\u003C/a>\u003C/strong>\u003C/p>",[536,537],{"id":283,"title":284},{"id":286,"title":287},{"id":539,"title":540,"description":541,"plans":542},"RYxw9xwXR3-OWnsdr8dFEg","Windows Server 2008 R2 post-EOS and post-ESU patches","\u003Cp>Windows Server 2008 R2 post-end-of-support patches, for computers without Extended Security Updates (ESU), or computers with any full year of ESU updates installed\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Windows+Server+2008+R2\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Windows Server 2008 R2 patches\u003C/a>\u003C/strong>\u003C/p>",[543,544],{"id":283,"title":284},{"id":286,"title":287},"Windows Server Patches","J7WLPCrKS7i7B8sAyJpKWg","microsoft-windows-vista",{"alt":549,"url":550,"width":551,"height":510,"responsiveImage":552},"Windows Server 2012-2022 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Office 2019 post-EOS patches","\u003Cp>Microsoft Office 2019 post-end-of-support patches\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Office+2019\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Microsoft Office 2019 patches\u003C/a>\u003C/strong>\u003C/p>",[570,571],{"id":283,"title":284},{"id":286,"title":287},{"id":573,"title":574,"description":575,"plans":576},"MkFk40IJQhCcXnIO2ZDd4Q","Microsoft Office 2016 post-EOS patches","\u003Cp>Microsoft Office 2016 post-end-of-support patches\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Office+2016\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Microsoft Office 2016 patches\u003C/a>\u003C/strong>\u003C/p>",[577,578],{"id":283,"title":284},{"id":286,"title":287},{"id":580,"title":581,"description":582,"plans":583},"FFqWfGxfQF2q0uyjyRjVWg","Microsoft Office 2013 post-EOS patches","\u003Cp>Microsoft Office 2013 post-end-of-support patches\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Office+2013\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Microsoft Office 2013 patches\u003C/a>\u003C/strong>\u003C/p>",[584,585],{"id":283,"title":284},{"id":286,"title":287},{"id":587,"title":588,"description":589,"plans":590},"XFYgrsOyRpeuEXk29M4z9g","Microsoft Office 2010 post-EOS patches","\u003Cp>Microsoft Office 2010 post-end-of-support patches\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Office+2010\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Microsoft Office 2010 patches\u003C/a>\u003C/strong>\u003C/p>",[591,592],{"id":283,"title":284},{"id":286,"title":287},"Microsoft Office Patches","VH2unwR4RjycDA1o_6eSFw","microsoft-windows-7",{"alt":597,"url":598,"width":510,"height":510,"responsiveImage":599},"Microsoft Office 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products patches","\u003Cp>We occasionally patch other Windows products, for instance when a critical vulnerability becomes known and the vendor does not provide an official patch in a timely manner\u003C/p>",[613],{"id":283,"title":284},"Other","BrWA-hAsQYSROgTvF-1ecA","microsoft-windows-11",{"alt":618,"url":619,"width":620,"height":621,"responsiveImage":18},"Windows 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more",[688,691],{"id":689,"primary":685,"externalLink":95,"parent":18,"reference":18,"title":690,"description":40,"publishTranslation":42},"B1pEweRaRD2YBkP6aH1CfA","Help center",{"id":692,"primary":42,"externalLink":693,"parent":18,"reference":18,"title":694,"description":40,"publishTranslation":42},"Mk0Yz-yqTk2akShgf7ARNg","https://central.0patch.com/","Sign in",[696,700],{"id":697,"title":698,"url":699},"NDrk5d4kQ96J2aCuTr-gvg","0patch on X","https://twitter.com/0patch",{"id":701,"title":702,"url":703},"GqN4lYxyTMyzcmRllVY4mg","Linked In","https://linkedin.com/company/0patch",{"left":705,"top":705,"width":706,"height":706,"rotate":705,"vFlip":685,"hFlip":685,"body":707},0,24,"\u003Cg fill=\"none\">\u003Cpath d=\"M11.9999 15.0539L6.34619 9.40013L7.39994 8.34637L11.9999 12.9464L16.5999 8.34637L17.6537 9.40013L11.9999 15.0539Z\" fill=\"currentColor\"/>\u003C/g>",{"left":705,"top":705,"width":706,"height":706,"rotate":705,"vFlip":685,"hFlip":685,"body":709},"\u003Cg 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Kolsek","f654RrHGTVCjom5_Nm66sA",{"blocks":787,"links":807,"value":808},[788,795],{"id":789,"_modelApiKey":790,"__typename":791,"title":40,"src":792,"width":793,"height":794},"UR0Cd399QOyPcTkg44CI_Q","iframe","IframeRecord","https://x.com/MsftSecIntel/status/925153373640278016?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E925153373640278016%7Ctwgr%5E0408b69b9964ea3e9b40c78f86daf60f9da6cbee%7Ctwcon%5Es1_&ref_url=https%3A%2F%2Fblog.0patch.com%2F2017%2F11%2Foffice-dde-exploits-and-attack-surface.html",640,480,{"id":796,"_modelApiKey":797,"__typename":798,"video":799},"ANG67c8uRF6b8OU434HFiA","video_external","VideoExternalRecord",{"url":800,"title":801,"thumbnailUrl":802,"height":803,"provider":804,"providerUid":805,"width":806},"https://www.youtube.com/watch?v=J-slgwGAg6o","Office DDE Exploits and Attack Surface Reduction (compared with 0patch)","https://i.ytimg.com/vi/J-slgwGAg6o/hqdefault.jpg",113,"youtube","J-slgwGAg6o",200,[],{"schema":809,"document":810},"dast",{"type":811,"children":812},"root",[813,819,821,828,852,893,897,898,902,919],{"type":814,"children":815},"paragraph",[816],{"type":817,"value":818},"span","Windows 10 Fall Creators Update brought a powerful security capability: Windows Defender Exploit Guard. Among its many features and mitigations, the one that sounded most interesting to us was the Attack Surface Reduction (ASR) - especially for its announced ability to block DDE-based attacks:\n\n",{"item":789,"type":820},"block",{"type":822,"children":823},"blockquote",[824],{"type":814,"children":825},[826],{"type":817,"value":827},"Attack Surface Reduction (ASR) in Windows Defender Exploit Guard blocks DDE-based malware https://t.co/bUOWOZiops— Microsoft MMPC (@msftmmpc) October 31, 2017",{"type":814,"children":829},[830,832,841,843,850],{"type":817,"value":831},"\nDDE-based attacks have been very popular lately. They are misusing a DDE-related feature whereby Office gets tricked into launching a malicious executable via a DDE or DDEAUTO field, the latter only requiring the user to confirm one non-security notice.\n\nYou may also know that ",{"url":833,"meta":834,"type":12,"children":838},"https://blog.0patch.com/2017/10/0patching-office-dde-ddeauto.html",[835],{"id":836,"value":837},"target","_blank",[839],{"type":817,"value":840},"we have created a free micropatch for Word that prevents DDE fields from launching any executables",{"type":817,"value":842}," - thereby enforcing the behavior specified in official Microsoft documentation, effectively blocking DDE attacks.\n\nWe therefore wanted to see how ASR does its magic. So we installed the Fall Creators Update and Office 2010, and followed ",{"url":844,"meta":845,"type":12,"children":847},"https://docs.microsoft.com/en-us/windows/threat-protection/windows-defender-exploit-guard/attack-surface-reduction-exploit-guard",[846],{"id":836,"value":837},[848],{"type":817,"value":849},"Microsoft's instructions",{"type":817,"value":851}," to enable the \"Block Office applications from creating child processes\" rule. We tested how DDE-based attacks are blocked, looked around a bit to see what could go wrong, and compared the said mitigation to our micropatch.\n\nYou can see the whole process in the video below, but the main takeaways are these:\n\n",{"type":853,"style":854,"children":855},"list","numbered",[856,863,869,875,881],{"type":857,"children":858},"listItem",[859],{"type":814,"children":860},[861],{"type":817,"value":862},"Most importantly, we confirmed that ASR does block DDE attacks in Word.",{"type":857,"children":864},[865],{"type":814,"children":866},[867],{"type":817,"value":868},"Unfortunately, ASR only applies to Word, Excel, PowerPoint and OneNote, so Outlook-based DDE attacks are not blocked. (Perhaps Outlook will be added at a later time?)",{"type":857,"children":870},[871],{"type":814,"children":872},[873],{"type":817,"value":874},"Also unfortunately, the ASR rule in question breaks some legitimate functionality. We found, for instance, that  it prevents Adobe Reader from being launched via Word's legitimate \"Create PDF/XPS Document\" functionality. There is another case (not shown in video) with Word being unable to launch \"System Info\" from the About dialog. Legitimate Word add-ins may want to launch processes too, and will be blocked.",{"type":857,"children":876},[877],{"type":814,"children":878},[879],{"type":817,"value":880},"In comparison, a real fix (in this case, our micropatch) only blocks the dangerous process-launching while leaving all other functionalities intact; it also automatically works in Outlook. Naturally, an actual code fix is always better than a generic mitigation.",{"type":857,"children":882},[883],{"type":814,"children":884},[885,887,891],{"type":817,"value":886},"Nevertheless, exploit mitigations have one big advantage compared to patches: they can stop or slow down attackers exploiting ",{"type":817,"marks":888,"value":890},[889],"strong","unknown vulnerabilities",{"type":817,"value":892},". A patch can only fix a known bug.",{"type":814,"children":894},[895],{"type":817,"value":896},"\nIn conclusion, ASR (with all its rules) is a very powerful tool and while one must exercise caution with its blocking of potentially legitimate functionality, it can significantly limit the attacker. So by all means use it if you can, but also apply patches for known vulnerabilities!\n\nYou can't use ASR, unfortunately, on non-Windows-10 systems, or on Office 2007, which has just reached its end of support but is likely still used in many places. \n\n\n",{"item":796,"type":820},{"type":814,"children":899},[900],{"type":817,"value":901},"\nStay safe!",{"type":814,"children":903},[904,911,913],{"url":905,"meta":906,"type":12,"children":908},"https://twitter.com/mkolsek",[907],{"id":836,"value":837},[909],{"type":817,"value":910},"@mkolsek",{"type":817,"value":912},"\n",{"url":699,"meta":914,"type":12,"children":916},[915],{"id":836,"value":837},[917],{"type":817,"value":918},"@0patch",{"type":814,"children":920},[921],{"type":817,"value":40},1780067960703]