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Sense of Security - Security Advisory - SOS-12-009 Release Date.05-Sep-2012 Last Update. - Vendor Notification Date.07-May-2012 Product. Ektron CMS Platform.ASP.NET Affected versions. Ektron CMS version 8.5.0 and possibly others Severity Rating. High Impact.Exposure of sensitive information Exposure of system information System Access Attack Vector. Remote without authentication Solution Status. Fixed in version 8.6 (not verified by SOS) CVE reference. CVE - not yet assigned Details. The web application is vulnerable to multiple security vulnerabilities, such as Unauthenticated File Upload and XML eXternal Entities (XXE) injection. 1.Unauthenticated File Upload: The form /WorkArea/Upload.aspx does not require authentication to upload a file. By issuing a POST request with a webshell embedded in a JPEG image and specifying the ASPX extension it is possible to upload ASPX code to /uploadedimages/. The ASPX code is placed in the comment section of the JPEG so that it survives image resizing. 2.XXE Injection: The XML parser at /WorkArea/Blogs/xmlrpc.aspx is vulnerable to XML external entity attacks which can be used to Scan behind perimeter firewalls or possibly include files from the local file system e.g. <!DOCTYPE scan [<!ENTITY test SYSTEM "http://localhost:22">]> <scan>&test;</scan> Solution. Upgrade to version 8.6 and remove the /WorkArea/Blogs/xmlrpc.aspx file. Discovered by. Phil Taylor and Nadeem Salim from Sense of Security Labs. About us. Sense of Security is a leading provider of information security and risk management solutions. Our team has expert skills in assessment and assurance, strategy and architecture, and deployment through to ongoing management. We are Australia's premier application penetration testing firm and trusted IT security advisor to many of the country's largest organisations. Sense of Security Pty Ltd Level 8, 66 King St Sydney NSW 2000 AUSTRALIA T: +61 (0)2 9290 4444 F: +61 (0)2 9290 4455 W: http://www.senseofsecurity.com.au/consulting/penetration-testing E: info@senseofsecurity.com.au Twitter: @ITsecurityAU The latest version of this advisory can be found at: http://www.senseofsecurity.com.au/advisories/SOS-12-009.pdf Other Sense of Security advisories can be found at: http://www.senseofsecurity.com.au/research/it-security-advisories.php |
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