{"id":40791,"date":"2021-05-06T14:28:08","date_gmt":"2021-05-06T14:28:08","guid":{"rendered":"https:\/\/packetstormsecurity.com\/news\/view\/32262\/JET-Engine-Flaws-Can-Crash-Microsoft-IIS-And-SQL-Servers.html"},"modified":"2021-05-06T14:28:08","modified_gmt":"2021-05-06T14:28:08","slug":"jet-engine-flaws-can-crash-microsoft-iis-and-sql-servers","status":"publish","type":"post","link":"https:\/\/www.threatshub.org\/blog\/jet-engine-flaws-can-crash-microsoft-iis-and-sql-servers\/","title":{"rendered":"JET Engine Flaws Can Crash Microsoft IIS And SQL Servers"},"content":{"rendered":"<p><span data-label=\"black hat asia\">Black Hat Asia<\/span> A trio of researchers at Palo Alto Networks has detailed vulnerabilities in the JET database engine, and demonstrated how those flaws can be exploited to ultimately execute malicious code on systems running Microsoft\u2019s SQL Server and Internet Information Services web server.<\/p>\n<p>The team also said Microsoft dismissed some of their findings as not worthy of a fix.<\/p>\n<p>In a talk today at Black Hat Asia titled <a target=\"_blank\" href=\"https:\/\/www.blackhat.com\/asia-21\/briefings\/schedule\/#give-me-a-sql-injection-i-shall-pwn-iis-and-sql-server-22251\" rel=\"noopener noreferrer\">Give Me a SQL Injection, I Shall PWN IIS and SQL Server<\/a>, the three explained they found the JET engine \u2013 for years an <a target=\"_blank\" rel=\"nofollow noopener noreferrer\" href=\"https:\/\/en.wikipedia.org\/wiki\/Microsoft_Jet_Database_Engine\">underlying tech<\/a> for Microsoft Access and other products, and still downloadable today \u2013 has many vulnerabilities. We&#8217;ve <a target=\"_blank\" href=\"https:\/\/www.theregister.com\/2018\/09\/20\/microsoft_jet_database_zero_day\/\" rel=\"noopener noreferrer\">previously reported<\/a> on such holes.<\/p>\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"top\" data-raptor=\"condor\" data-xsm=\",fluid,mpu,\" data-sm=\",fluid,mpu,\" data-md=\",fluid,leaderboard,mpu,\" data-lg=\",fluid,leaderboard,\" data-xlg=\",fluid,superleaderboard,billboard,leaderboard,\"> <noscript> <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=2&amp;c=2YJbY6g77ZULMuv1-dtdcWwAAAFc&amp;t=ct%3Dns%26unitnum%3D2%26raptor%3Dcondor%26pos%3Dtop%26test%3D0\" target=\"_blank\" rel=\"noopener noreferrer\"> <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=2&amp;c=2YJbY6g77ZULMuv1-dtdcWwAAAFc&amp;t=ct%3Dns%26unitnum%3D2%26raptor%3Dcondor%26pos%3Dtop%26test%3D0\" alt> <\/a> <\/noscript> <\/div>\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"top\" data-raptor=\"falcon\" data-xxlg=\",fluid,billboard,superleaderboard,brandwidth,brandimpact,leaderboard,mpu,\"> <noscript> <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44YJbY6g77ZULMuv1-dtdcWwAAAFc&amp;t=ct%3Dns%26unitnum%3D4%26raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" target=\"_blank\" rel=\"noopener noreferrer\"> <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44YJbY6g77ZULMuv1-dtdcWwAAAFc&amp;t=ct%3Dns%26unitnum%3D426raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" alt> <\/a> <\/noscript> <\/div>\n<div class=\"adun_eagle_desktop_story_wrapper\">\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"mid\" data-raptor=\"eagle\" data-xxlg=\",mpu,dmpu,\"> <noscript> <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=3&amp;c=33YJbY6g77ZULMuv1-dtdcWwAAAFc&amp;t=ct%3Dns%26unitnum%3D3%26raptor%3Deagle%26pos%3Dmid%26test%3D0\" target=\"_blank\" rel=\"noopener noreferrer\"> <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=3&amp;c=33YJbY6g77ZULMuv1-dtdcWwAAAFc&amp;t=ct%3Dns%26unitnum%3D3%26raptor%3Deagle%26pos%3Dmid%26test%3D0\" alt> <\/a> <\/noscript> <\/div>\n<\/p><\/div>\n<p>Senior principal researcher Tao Yan, principal researcher Qi Deng, and senior distinguished engineer Bo Qu explained it is possible to configure JET to access and query remote databases.<\/p>\n<p>While JET was not designed to do so, the researchers showed that it&#8217;s possible to designate JET as a &#8220;related provider&#8221; to SQL Server.<\/p>\n<p>Tao said access to the databases also requires what he called a \u201chidden\u201d method that involved combining SMB and WebDAV. That combo can also be used to create files on IIS and SQL Server hosts.<\/p>\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"top\" data-raptor=\"falcon\" data-xsm=\",fluid,mpu,\" data-sm=\",fluid,mpu,\" data-md=\",fluid,leaderboard,mpu,\" data-lg=\",fluid,mpu,leaderboard,\" data-xlg=\",fluid,billboard,superleaderboard,mpu,leaderboard,\"> <noscript> <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44YJbY6g77ZULMuv1-dtdcWwAAAFc&amp;t=ct%3Dns%26unitnum%3D4%26raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" target=\"_blank\" rel=\"noopener noreferrer\"> <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44YJbY6g77ZULMuv1-dtdcWwAAAFc&amp;t=ct%3Dns%26unitnum%3D426raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" alt> <\/a> <\/noscript> <\/div>\n<p>Once JET and SQL Server are linked, and the SMB\/WebDAV connection made, JET users can send queries to SQL Server. If those queries happen to be SQL injections, they can ultimately crash the SQL Server, or worse. The team demoed that and similar SQL injections taking down Internet Information Server.<\/p>\n<p>\u201cYou can get remote system privileges with only an SQL injection,\u201d Tao declared.<\/p>\n<div class=\"CaptionedImage width_85\" readability=\"7\"><a href=\"https:\/\/regmedia.co.uk\/2021\/05\/06\/give_me_a_sql_injection_i_shall_pwn_iis_and_sql_server.jpg\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/regmedia.co.uk\/2021\/05\/06\/give_me_a_sql_injection_i_shall_pwn_iis_and_sql_server.jpg?x=648&amp;y=260&amp;infer_y=1\" alt=\"Give Me a SQL Injection, I Shall PWN IIS and SQL Server\" title=\"Give Me a SQL Injection, I Shall PWN IIS and SQL Server\" height=\"260\" width=\"648\"><\/a><\/p>\n<p class=\"text_center\">The trio&#8217;s advice &#8230; Pay attention to WebDAV. Click to enlarge<\/p>\n<\/div>\n<p>The researchers said they shared their work with Microsoft, and the software giant has rebuffed them on the grounds that the problems identified do not cross a defined security boundary.<\/p>\n<p>Tao found that concerning, given that millions of devices already running JET have the potential to be used for evil.<\/p>\n<p>Tao said the three believe Microsoft will eventually patch JET, and they will withhold details of their findings until such remedies arrive. He added he has no firm indication of when the Windows titan plans to deliver such a fix. \u00ae<\/p>\n<p> READ MORE <a href=\"https:\/\/packetstormsecurity.com\/news\/view\/32262\/JET-Engine-Flaws-Can-Crash-Microsoft-IIS-And-SQL-Servers.html\">HERE<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>READ MORE HERE&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_layout":"default_layout","footnotes":""},"categories":[60],"tags":[9363],"class_list":["post-40791","post","type-post","status-publish","format-standard","hentry","category-packet-storm","tag-headlinemicrosoftdatabasedenial-of-serviceflaw"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>JET Engine Flaws Can Crash Microsoft IIS And SQL Servers 2026 | ThreatsHub Cybersecurity News<\/title>\n<meta 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