Fake American Express Alerts

Published: 2013-08-02. Last Updated: 2013-08-02 16:20:31 UTC
by Johannes Ullrich (Version: 1)

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.

SANS Technology Institute
Twitter

Keywords: americanexpress amex

5 comment(s)

Scans for Open File Uploads into CKEditor

Published: 2013-08-02. Last Updated: 2013-08-02 14:36:03 UTC
by Johannes Ullrich (Version: 1)

0 comment(s)

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

If you are using this module, make sure it is properly configured. It is recommended to password protect the editor if you can (of course, for a public blog comment system that may not be an answer, but it may not need the file upload capability

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Johannes B. Ullrich, Ph.D.
SANS Technology Institute
Twitter @johullrich

Keywords: ckeditor fckeditor

0 comment(s)

Cisco Security Advisory: OSPF LSA Manipulation Vulnerability in Multiple Cisco Products http://tools.cisco.com/security/center/viewAlert.x?alertId=30210

ISC StormCast for Friday, August 2nd 2013 http://isc.sans.edu/podcastdetail.html?id=3457

VMware Security Advisory VMSA-2013-0009 - http://www.vmware.com/security/advisories/VMSA-2013-0009.html