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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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40px","https://www.datocms-assets.com/166020/1764600963-win11.png?auto=compress&crop=focalpoint&fit=crop&h=40",40,"#0278cf","data:image/png;base64,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","2025-06-25",{"__typename":290,"_allReferencingPatchesMeta":521,"_allReferencingPatches":523,"_modelApiKey":418,"name":545,"id":546,"slug":547,"icon":548,"supportDate":519},{"count":522},3,[524,531,538],{"id":525,"title":526,"description":527,"plans":528},"DMZZcGMvQfaRElACxvHXyA","Windows 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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Two Similar Remote Code Execution Issues (CVE-2022-21971, CVE-2022-21974)",{"tag":721,"attributes":722,"content":18},"meta",{"property":723,"content":719},"og:title",{"tag":721,"attributes":725,"content":18},{"name":726,"content":719},"twitter:title",{"tag":721,"attributes":728,"content":18},{"name":729,"content":730},"description","This is a 0patch 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CVE-2022-21971","https://i.ytimg.com/vi/DZiZqsRzlzM/hqdefault.jpg",113,"youtube","DZiZqsRzlzM",200,[],{"schema":823,"document":824},"dast",{"type":825,"children":826},"root",[827,844,848,852,897,935,939,943,946,948,952,956,959,979,982,986,989,993,996,997,1000,1012,1024],{"type":828,"children":829},"paragraph",[830,833,842],{"type":831,"value":832},"span","Twelve days ago, security researcher ",{"url":834,"meta":835,"type":12,"children":839},"https://twitter.com/0vercl0k",[836],{"id":837,"value":838},"target","_blank",[840],{"type":831,"value":841},"Axel Souchet",{"type":831,"value":843}," published detailed analyses with associated proofs-of-concept for two remotely exploitable vulnerabilities in Windows that were fixed by Microsoft with February Windows Updates. Both vulnerabilities are similar and are caused by an uninitialized pointer that a malicious RTF file can get freed while having an illegal value.",{"type":828,"children":845},[846],{"type":831,"value":847},"Exploitability of such issues depends on whether the attacker can get the uninitialized value to point to a chosen address and thus control the resulting memory corruption. We don't know if this is possible but following the worst-case assumption principle (and historical track record showing that to be generally possible with sufficient motivation), unexplored memory corruption issues are assumed to allow for a remote code execution.",{"type":828,"children":849},[850],{"type":831,"value":851},"The two vulnerabilities are:",{"type":853,"style":854,"children":855},"list","numbered",[856,877],{"type":857,"children":858},"listItem",[859],{"type":828,"children":860},[861,868,870],{"url":862,"meta":863,"type":12,"children":865},"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21971",[864],{"id":837,"value":838},[866],{"type":831,"value":867},"CVE-2022-21971",{"type":831,"value":869}," - see ",{"url":871,"meta":872,"type":12,"children":874},"https://github.com/0vercl0k/CVE-2022-21971",[873],{"id":837,"value":838},[875],{"type":831,"value":876},"Axel's POC with analysis",{"type":857,"children":878},[879],{"type":828,"children":880},[881,888,889,895],{"url":882,"meta":883,"type":12,"children":885},"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21974",[884],{"id":837,"value":838},[886],{"type":831,"value":887},"CVE-2022-21974",{"type":831,"value":869},{"url":890,"meta":891,"type":12,"children":893},"https://github.com/0vercl0k/CVE-2022-21974",[892],{"id":837,"value":838},[894],{"type":831,"value":876},{"type":831,"value":896},"\n",{"type":828,"children":898},[899,901,906,908,913,915,920,922,927,928,933],{"type":831,"value":900},"While Axel found these vulnerabilities, he was not the only one; both issues were reported to Microsoft by ",{"url":902,"type":12,"children":903},"https://twitter.com/wh1tc",[904],{"type":831,"value":905},"Zesen Ye",{"type":831,"value":907}," and ",{"url":909,"type":12,"children":910},"https://twitter.com/edwardzpeng",[911],{"type":831,"value":912},"Zhiniang Peng",{"type":831,"value":914}," with ",{"url":916,"type":12,"children":917},"https://www.sangfor.com/en",[918],{"type":831,"value":919},"Sangfor",{"type":831,"value":921},", and CVE-2022-21971 also by ",{"url":923,"type":12,"children":924},"https://twitter.com/jq0904",[925],{"type":831,"value":926},"Jinquan",{"type":831,"value":914},{"url":929,"type":12,"children":930},"https://www.dbappsecurity.com.cn/product/cloud250.html",[931],{"type":831,"value":932},"DBAPPSecurity Lieying Lab",{"type":831,"value":934},". There was some initial uncertainty on whether these CVE IDs really matched Axel's findings, but Zhiniang has confirmed the match.",{"type":828,"children":936},[937],{"type":831,"value":938},"It was trivial to reproduce both issues by simply enabling Page Heap for WordPad.exe and opening Axel's RTF documents with WordPad. While WordPad requires the user to unblock content in a security warning, opening the same document in Microsoft Word produces no warnings. We preferred using WordPad for our analysis, however, as it is present on Windows by default.",{"type":828,"children":940},[941],{"type":831,"value":942},"Our analysis of Microsoft's fixes for these issues revealed that, unsurprisingly, they just added pointer initialization to constructor code. The image below shows a diff between vulnerable (left) and fixed constructor (right) in RMSRoamingSecurity.dll., and something similar was done in prauthproviders.dll as well.\n",{"type":828,"children":944},[945],{"type":831,"value":896},{"item":794,"type":947},"block",{"type":828,"children":949},[950],{"type":831,"value":951}," ",{"type":828,"children":953},[954],{"type":831,"value":955},"Our micropatches are logically equivalent to Microsoft's. They were written for the following Windows versions that don't receive official patches from Microsoft:",{"type":828,"children":957},[958],{"type":831,"value":896},{"type":853,"style":854,"children":960},[961,967,973],{"type":857,"children":962},[963],{"type":828,"children":964},[965],{"type":831,"value":966},"Windows 10 v1803 updated to May 2021",{"type":857,"children":968},[969],{"type":828,"children":970},[971],{"type":831,"value":972},"Windows 10 v1809 updated to May 2021",{"type":857,"children":974},[975],{"type":828,"children":976},[977],{"type":831,"value":978},"Windows 10 v2004 updated to December 2021\n",{"type":828,"children":980},[981],{"type":831,"value":896},{"type":828,"children":983},[984],{"type":831,"value":985},"Note that Windows 7 and Server 2008 R2 are not affected as the vulnerable functionalities do not exist there. ",{"type":828,"children":987},[988],{"type":831,"value":951},{"type":828,"children":990},[991],{"type":831,"value":992},"Here is a video showing how 0patch blocks exploitation of these vulnerabilities:",{"type":828,"children":994},[995],{"type":831,"value":896},{"item":810,"type":947},{"type":828,"children":998},[999],{"type":831,"value":951},{"type":828,"children":1001},[1002,1004,1010],{"type":831,"value":1003},"These micropatches have already been distributed to all online 0patch Agents with a PRO or Enterprise license. To obtain them and have them applied on your computers along with our other micropatches, create an account in ",{"url":693,"meta":1005,"type":12,"children":1007},[1006],{"id":837,"value":838},[1008],{"type":831,"value":1009},"0patch Central",{"type":831,"value":1011},", install 0patch Agent and register it to your account with a PRO or Enterprise subscription. Note that no computer restart is needed for installing the agent or applying/un-applying any 0patch micropatch.\n",{"type":828,"children":1013},[1014,1016,1022],{"type":831,"value":1015},"To learn more about 0patch, please visit our ",{"url":1017,"meta":1018,"type":12,"children":1020},"https://0patch.zendesk.com/hc/en-us",[1019],{"id":837,"value":838},[1021],{"type":831,"value":97},{"type":831,"value":1023},". ",{"type":828,"children":1025},[1026,1028,1033],{"type":831,"value":1027},"We'd like to thank ",{"url":834,"meta":1029,"type":12,"children":1031},[1030],{"id":837,"value":838},[1032],{"type":831,"value":841},{"type":831,"value":1034}," for publishing their analyses and providing proofs-of-concept that allowed us to reproduce these vulnerabilities and create micropatches for them. 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