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{"id": "VULNERLAB:2112", "vendorId": null, "type": "vulnerlab", "bulletinFamily": "exploit", "title": "Microsoft Skypexspaces - DNS Squatting Web Vulnerability", "description": "", "published": "2018-01-12T00:00:00", "modified": "2018-01-12T00:00:00", "cvss": {"score": 0.0, "vector": "NONE"}, "cvss2": {}, "cvss3": {}, "href": "http://www.vulnerability-lab.com/get_content.php?id=2112", "reporter": "SaifAllah benMassaoud [saifmassaoudi18@gmail.com] - @benmassaou - https://www.vulnerability-lab.com/show.php?user=S.AbenMassaoud", "references": [], "cvelist": [], "immutableFields": [], "lastseen": "2019-07-10T16:42:10", "viewCount": 14, "enchantments": {"dependencies": {}, "score": {"value": -0.2, "vector": "NONE"}, "backreferences": {"references": [{"type": "threatpost", "idList": ["THREATPOST:07A8466539FBE60F0745BA8985EE73D1", "THREATPOST:87674040C7E713171787C372FB0D24DB", "THREATPOST:A5DA2027FC2C5FE68AC50C92BE182FB8", "THREATPOST:E6F05C49DD277EEC47DDEFB35F8D2818"]}]}, "exploitation": null, "vulnersScore": -0.2}, "sourceData": "Document Title:\r\n===============\r\nMicrosoft Skypexspaces - DNS Squatting Web Vulnerability\r\n\r\n\r\nReferences (Source):\r\n====================\r\nhttps://www.vulnerability-lab.com/get_content.php?id=2112\r\n\r\n\r\nRelease Date:\r\n=============\r\n2018-01-12\r\n\r\n\r\nVulnerability Laboratory ID (VL-ID):\r\n====================================\r\n2112\r\n\r\n\r\nCommon Vulnerability Scoring System:\r\n====================================\r\n6.4\r\n\r\n\r\nVulnerability Class:\r\n====================\r\nInsecure Configuration Management\r\n\r\n\r\nCurrent Estimated Price:\r\n========================\r\n5.000\u20ac - 10.000\u20ac\r\n\r\n\r\nProduct & Service Introduction:\r\n===============================\r\nMicrosoft Corporation is an American multinational technology company with headquarters in Redmond, Washington. It develops, manufactures, \r\nlicenses, supports and sells computer software, consumer electronics, personal computers, and services. Its best known software products \r\nare the Microsoft Windows line of operating systems, the Microsoft Office suite, and the Internet Explorer and Edge web browsers. Its flagship \r\nhardware products are the Xbox video game consoles and the Microsoft Surface tablet lineup. As of 2016, it is the world's largest software maker \r\nby revenue, and one of the world's most valuable companies. The word \"Microsoft\" is a portmanteau of microcomputer and software.\r\n\r\n(Copy of the Homepage: https://en.wikipedia.org/wiki/Microsoft )\r\n\r\n\r\nAbstract Advisory Information:\r\n==============================\r\nThe vulnerability laboratory core research team discovered a dns vulnerability in the official Microsoft Skypexspaces online service web-application.\r\n\r\n\r\nVulnerability Disclosure Timeline:\r\n==================================\r\n2017-09-27 : Researcher Notification & Coordination (SaifAllah benMassaoud)\r\n2017-09-27 : Vendor Notification (MSRC Team - Microsoft Security Department)\r\n2017-10-10 : Vendor Response/Feedback (MSRC Team - Microsoft Security Department)\r\n2018-01-09 : Vendor Fix/Patch (Microsoft Service Developer Team)\r\n2018-01-10 : Security Acknowledgements (MSRC Team - Microsoft Security Department)\r\n2018-01-12 : Public Disclosure (Vulnerability Laboratory)\r\n\r\n\r\n\r\nDiscovery Status:\r\n=================\r\nPublished\r\n\r\n\r\nAffected Product(s):\r\n====================\r\n\r\nExploitation Technique:\r\n=======================\r\nRemote\r\n\r\n\r\nSeverity Level:\r\n===============\r\nMedium\r\n\r\n\r\nAuthentication Type:\r\n====================\r\nNo authentication (guest)\r\n\r\n\r\nUser Interaction:\r\n=================\r\nNo User Interaction\r\n\r\n\r\nDisclosure Type:\r\n================\r\nResponsible Disclosure Program\r\n\r\n\r\nTechnical Details & Description:\r\n================================\r\nA dns server vulnerability has been discovered in the official Microsoft Skypexspaces online service web-application.\r\nThe remote vulnerability allows remote attackers to hijack the microsoft skypexspaces subdomain service web-application \r\nby a sign up to microsoft azure service. The microsoft Skypexspaces subdomain and azure service is vulnerable to such typ \r\nof attacks. The dns answer cname performed by the azure app service leads to a takeover of the involved Skypexspaces subddomain.\r\n\r\nThe issue could allow an attacker to store something malicious by uploading a web page to make a pretty convincing phishing page \r\nor by running the browser with windows exploits through the application. The issue could allow an attacker to deface the microsoft \r\nSkypexspaces service web application and can lead to a web-server system compromise at the end. \r\n\r\nThe vulnerability is located in the dns configuration of the cname record that points skypexspaces.microsoft.com to skypexspaces.azurewebsites.net. \r\nAttackers can use microsoft.com domain name to create more effective attacks against users (Accounts & Windows operating system versions etc.).\r\n\r\nThe security risk of the vulnerability is estimated as high. Exploitation of the vulnerability requires a privileged web-application user account \r\nand medium user interaction. Successful exploitation of the vulnerability results in dns hijack and webserver or subdomain compromise.\r\n\r\nVulnerable Service(s):\r\n[+] skypexspaces.microsoft.com\r\n\r\n\r\n\r\nProof of Concept (PoC):\r\n=======================\r\nThe dns vulnerability can be exploited by remote attackers with high privilege of the web-application and lhigh or medium user interaction.\r\nFor security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.\r\n\r\n\r\n--- PoC Session Logs ---\r\nskypexspaces.microsoft.com. 5\tIN\tCNAME skypexspaces.azurewebsites.net.\r\nskypexspaces.azurewebsites.net.\t5 IN\tCNAME\twaws-prod-sn1-135.vip.azurewebsites.windows.net.\r\nwaws-prod-sn1-135.vip.azurewebsites.windows.net. 5 IN CNAME waws-prod-sn1-135.cloudapp.net.\r\n\r\n\r\nSolution - Fix & Patch:\r\n=======================\r\n2018-01-09 : Vendor Fix/Patch (Microsoft Developer Team - Online Services)\r\n\r\n\r\n\r\nSecurity Risk:\r\n==============\r\nThe security risk of dns squatting vulnerability in the microsoft skypexspaces web-service is estimated as high (CVSS 6.4).\r\n\r\n\r\nCredits & Authors:\r\n==================\r\nSaifAllah benMassaoud [saifmassaoudi18@gmail.com] - @benmassaou - https://www.vulnerability-lab.com/show.php?user=S.AbenMassaoud\r\n\r\n\r\nDisclaimer & Information:\r\n=========================\r\nThe information provided in this advisory is provided as it is without any warranty. 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