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Sense of Security - Security Advisory - SOS-12-006 Release Date.13-Jun-2012 Last Update. - Vendor Notification Date.12-Mar-2012 Product. QNAP Platform.Turbo NAS (verified) and possibly others Affected versions. Firmware Version: 3.6.1 Build 0302T and prior Severity Rating. High Impact.Exposure of sensitive information Exposure of system information Privilege escalation System access Attack Vector. Remote with authentication Solution Status. Currently no software update; vendor has elected not to fix at this time CVE reference. CVE - not yet assigned Details. QNAP provide NAS technology solutions to consumers and enterprises. Multiple vulnerabilities have been identified in the web management interface. 1. Command Injection: The QNAP Download Station (QDownload) is vulnerable to command injection as the application executes user-controllable data that is processed by a shell command interpreter. The following resources, accessible post authentication are affected: /cgi-bin/Qdownload/DS_RSS_Option.cgi [keyword parameter] /cgi-bin/Qdownload/DS_RSS_Option.cgi [title parameter] Commands are executed with the context of the admin user [uid=0(admin) gid=0(administrators] on the QNAP device. Proof of Concept. /cgi-bin/Qdownload/DS_RSS_Option.cgi?_dc=1331164660690&url=http%3A%2F%2F google.com&title=test&keyword=<code>touch%20%2ftesto%2etxt</code>&todo=add&sid=i9 nonapr&ver=2.0 2. Cryptography: The QNAP login page stores persistent cookies (including the administrator username and password) as base64 encoded strings inside the cookie parameter nas_p. These cookies are not protected with either the HTTPOnly or Secure flags allowing theft via one of the many cross-site scripting vulnerabilities which exist within the application (disclosed previously by another researcher, but never fixed). Proof of Concept. Cookie: qnap_admin_style=default; nas_save_u=1; nas_u=bGFicw==; nas_address=10.1.1.2; nas_save_p=1; nas_p= YWRtaW5UMG1iJTI0dDBuMw==; nas_tree_x=240; nas_tree_y=370 YWRtaW5UMG1iJTI0dDBuMw== decodes to admin123qweasd Solution. No vendor solution. Discovered by. Nadeem Salim and Phil Taylor 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-12-006.pdf Other Sense of Security advisories can be found at: http://www.senseofsecurity.com.au/research/it-security-advisories.php |
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