[FD] Mapbox (API) - Filter Bypass & Persistent Vulnerability

Document Title: =============== Mapbox (API) - Filter Bypass & Persistent Vulnerability References (Source): ==================== http://ift.tt/22IiPXt ID: #119802 Release Date: ============= 2016-06-06 Vulnerability Laboratory ID (VL-ID): ==================================== 1787 Common Vulnerability Scoring System: ==================================== 3.8 Product & Service Introduction: =============================== Mapbox is a large provider of custom online maps for websites such as Foursquare, Pinterest, Evernote, the Financial Times, The Weather Channel and Uber Technologies. Since 2010, it has rapidly expanded the niche of custom maps, as a response to the limited choice offered by map providers such as Google Maps. Mapbox is the creator of, or a significant contributor to some open source mapping libraries and applications, including the MBTiles specification, the TileMill cartography IDE, the Leaflet JavaScript library, and the CartoCSS map styling language and parser. (Copy of the Homepage: http://ift.tt/1TTA6aL ) Abstract Advisory Information: ============================== The Vulnerability Laboratory Core Research Team discovered a filter bypass issue and an application-side vulnerability in the official Mapbox online service web-application. Filter Bypass & Persistent Vulnerability Vulnerability Disclosure Timeline: ================================== 2016-03-01: Researcher Notification & Coordination (Benjamin Kunz Mejri) 2016-03-01 Vendor Notification (MapBox Security Team - Bug Bounty Program) 2016-03-01: Vendor Response/Feedback (MapBox Security Team - Bug Bounty Program) 2016-05-11: Vendor Fix/Patch (MapBox Service Developer Team) 2016-06-06: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== Exploitation Technique: ======================= Remote Severity Level: =============== Medium Technical Details & Description: ================================ An application-side input validation web vulnerability has been discovered in the official Mapbox online service web-application. The vulnerability allows remote attacker to inject malicious script codes to application-side of the vulnerable service module. The discovered vulnerability is an application-side input validation issue with affect to the outgoing mail encoding of the domains web-server. The injection point is the contact formular and the execution point is the email that is get send to the contact email in the form without secure verify. The encoding of outgoing mails is broken and encodes the context with wrong conditions. The vulnerable inputs is the Name and the Note context. The request method to inject is POST via contact form. The attacker injects the payload to the name or note value of the contact formular that requests through the basic api. After the inject the code runs wrong encoded through the system and executes at the managers section but also in the ticket system message replies itself. The security risk of the application-side vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.8. Exploitation of the persistent web vulnerability requires no privileged web-application account with restricted access but low user interaction. Successful exploitation of the vulnerabilities results in persistent phishing mails, session hijacking, persistent external redirect to malicious sources and application-side manipulation of affected or connected module context. Request Method(s): [+] POST Vulnerable Module(s) [+] ./contact/ Vulnerable Input(s): [+] Firstname [+] Lastname Vulnerable Parameter(s) [+] Name [+] Note Affected Module(s) [+] Mapbox Service Mails Proof of Concept (PoC): ======================= The vulnerability can be exploited by remote attackers without privileged web-application user account and with low user interaction. For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.

Remove23 sent a message	Mar 1, 8:22am
Plan: premium Name: "><"<[PERSISTENT INJECTED SCRIPT CODE!] src="x" />%20%20>" ... ... {#HS:176795903-53087#}

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