Fake American Express Alerts
Right now we are seeing fake American Express account alerts. The alerts look very real, and will trick the user into clicking on a link that may lead to malware. As many of these attacks, the exact destination will heavily depend on the browser used.
Antivirus does recognize the intermediate scripts as malicious and should warn the user if configured to inspect web content.
(click on image for full size)
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Johannes B. Ullrich, Ph.D.
Scans for Open File Uploads into CKEditor
We are seeing *a lot* of scans for the CKEditor file upload script. CKEditor (aka "FCKEditor") is a commonly used gui editor allowing users to edit HTML as part of a web application. Many web applications like wikis and bulletin boards use it. It provides the ability to upload files to web servers. The scans I have observed so far apper to focus on the file upload function, but many scans will just scan for the presence of the editor / file upload function and it is hard to tell what the attacker would do if the editor is found.
Here are some sample reports:
Full sample POST request:
GET /FCK/editor/filemanager/connectors/php/connector.php?Command=GetFoldersAndFiles&Type=File&CurrentFolder=%2F HTTP/1.1
HOST: --removed--
ACCEPT: text/html, */*
USER-AGENT: Mozilla/3.0 (compatible; Indy Library)
Some sample Apache logs:
HEAD /FCKeditor/editor/filemanager/upload/test.html HEAD /admin/FCKeditor/editor/filemanager/browser/default/connectors/test.html HEAD /admin/FCKeditor/editor/filemanager/connectors/test.html HEAD /admin/FCKeditor/editor/filemanager/connectors/uploadtest.html HEAD /admin/FCKeditor/editor/filemanager/upload/test.html HEAD /FCKeditor/editor/filemanager/browser/default/connectors/test.html HEAD /FCKeditor/editor/filemanager/connectors/test.html HEAD /FCKeditor/editor/filemanager/connectors/uploadtest.html HEAD /FCKeditor/editor/filemanager/upload/test.html
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Johannes B. Ullrich, Ph.D.
SANS Technology Institute
Twitter @johullrich
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Nov 17th 2022
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Dec 3rd 2022
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isc.sans.edu
Dec 26th 2022
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Dec 26th 2022
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