{"id":14830,"date":"2020-06-21T00:23:00","date_gmt":"2020-06-20T22:23:00","guid":{"rendered":"http:\/\/159.69.82.204\/win\/?p=14830"},"modified":"2022-11-03T10:37:57","modified_gmt":"2022-11-03T09:37:57","slug":"sharepoint-poc-fr-rce-schwachstelle-cve-2020-1181","status":"publish","type":"post","link":"https:\/\/borncity.com\/win\/2020\/06\/21\/sharepoint-poc-fr-rce-schwachstelle-cve-2020-1181\/","title":{"rendered":"SharePoint: PoC for RCE Vulnerability CVE-2020-1181"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" style=\"float: left; margin: 0px 10px 0px 0px; display: inline\" src=\"https:\/\/www.borncity.com\/blog\/wp-content\/uploads\/2015\/01\/Schutz.jpg\" width=\"40\" align=\"left\" height=\"47\">[<a href=\"https:\/\/www.borncity.com\/blog\/?p=232779\" target=\"_blank\" rel=\"noopener noreferrer\">German<\/a>]Security researchers have now published a proof of concept (PoC) for the Remote Code Execution (RCE) vulnerability in the web part CVE-2020-1181. Since patches are available, administrators should take action. <\/p>\n<p><!--more--><\/p>\n<h2>SharePoint: The RCE Vulnerability CVE-2020-1181<\/h2>\n<p>Microsoft SharePoint Server is vulnerable to a CVE-2020-1181 RCE vulnerability when unsecure ASP.Net Web controls are not properly identified and filtered. An authenticated attacker who successfully exploited the vulnerability could use a specially crafted page to perform actions in the security context of the SharePoint application pool process.<\/p>\n<p>To exploit the vulnerability, an authenticated user must create and view a specially crafted page in an affected version of Microsoft SharePoint Server.   <\/p>\n<h2>Security updates are available<\/h2>\n<p>In a support article about the RCE vulnerability CVE-2020-1181 , Microsoft states that the vulnerability is unlikely to be exploited in older software versions. In the article, Microsoft provides the following security updates for Microsoft SharePoint Server. <\/p>\n<ul>\n<li>Microsoft SharePoint Enterprise Server 2016: <a href=\"https:\/\/support.microsoft.com\/kb\/4484402\" target=\"_blank\" rel=\"noopener noreferrer\">KB4484402<\/a>\n<li>Microsoft SharePoint Foundation 2010 Service Pack 2: <a href=\"https:\/\/support.microsoft.com\/kb\/4484391\" target=\"_blank\" rel=\"noopener noreferrer\">KB4484391<\/a>\n<li>Microsoft SharePoint Foundation 2013 Service Pack 1: <a href=\"https:\/\/support.microsoft.com\/kb\/4484409\" target=\"_blank\" rel=\"noopener noreferrer\">KB4484409<\/a>\n<li>Microsoft SharePoint Server 2019: <a href=\"https:\/\/support.microsoft.com\/kb\/4484400\" target=\"_blank\" rel=\"noopener noreferrer\">KB4484400<\/a><\/li>\n<\/ul>\n<p>The vulnerability CVE-2020-1181 in SharePoint has been closed by Microsoft on June 9, 2020 (patchday).  <\/p>\n<h2>Proof of Concept (PoC) for CVE-2020-1181<\/h2>\n<p>However, administrators should act now and install the updates promptly. These days I came across the following tweet from Nicolas Karassas. <\/p>\n<blockquote class=\"twitter-tweet\">\n<p lang=\"en\" dir=\"ltr\">CVE-2020-1181: SharePoint Remote Code Execution Through Web Parts &#8211; includes step-by-step Proof of Concept<a href=\"https:\/\/t.co\/1ydBxQN93W\">https:\/\/t.co\/1ydBxQN93W<\/a><\/p>\n<p>\u2014 Nicolas Krassas (@Dinosn) <a href=\"https:\/\/twitter.com\/Dinosn\/status\/1273541000120631297?ref_src=twsrc%5Etfw\">June 18, 2020<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script> <\/p>\n<p>The Zero Day Initiative (ZDI) published <a href=\"https:\/\/www.zerodayinitiative.com\/blog\/2020\/6\/16\/cve-2020-1181-sharepoint-remote-code-execution-through-web-parts\" target=\"_blank\" rel=\"noopener noreferrer\">this document<\/a> on June 17, 2020, which deals with the vulnerability and its exploitation. A Proof of Concept (PoC) is available.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[German]Security researchers have now published a proof of concept (PoC) for the Remote Code Execution (RCE) vulnerability in the web part CVE-2020-1181. Since patches are available, administrators should take action.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[580,1547,22],"tags":[69,1633,195],"class_list":["post-14830","post","type-post","status-publish","format-standard","hentry","category-security","category-software","category-update","tag-security","tag-sharepoint","tag-update"],"_links":{"self":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts\/14830","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/comments?post=14830"}],"version-history":[{"count":0,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts\/14830\/revisions"}],"wp:attachment":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/media?parent=14830"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/categories?post=14830"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/tags?post=14830"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}