[FD] IBM BlueMix Cloud - (API) Persistent Web Vulnerability

Document Title: =============== IBM BlueMix Cloud - (API) Persistent Web Vulnerability References (Source): ==================== http://ift.tt/29GVqRO IBM Security Tracking ID: 5377-12593283 Release Date: ============= 2016-07-04 Vulnerability Laboratory ID (VL-ID): ==================================== 1846 Common Vulnerability Scoring System: ==================================== 3.7 Product & Service Introduction: =============================== Bluemix is the latest cloud offering from IBM. It enables organizations and developers to quickly and easily create, deploy, and manage applications on the cloud. Bluemix is an implementation of IBM's Open Cloud Architecture based on Cloud Foundry, an open source Platform as a Service (PaaS). Bluemix delivers enterprise-level services that can easily integrate with your cloud applications without you needing to know how to install or configure them. This article gives a high-level description of Cloud Foundry and Bluemix and outlines the features and services. (copy of the Vendor Homepage: http://ift.tt/1wbzcMQ ) Abstract Advisory Information: ============================== An independent vulnerability laboratory researcher discovered an application-side vulnerability in the official IBM BlueMix Cloud online service web-application. Vulnerability Disclosure Timeline: ================================== 2016-05-17: Researcher Notification & Coordination (Digvijay Singh) 2016-05-18: Vendor Notification (IBM Security Research Team) 2016-05-28: Vendor Response or Feedback (IBM Security Research Team) 2016-07-01: Vendor Fix/Patch (IBM BlueMix Developer Team) 2016-07-04: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== IBM Product: BlueMix Cloud - Online Service (Web-Application) 2016 Q2 Exploitation Technique: ======================= Remote Severity Level: =============== Medium Technical Details & Description: ================================ An application-side input validation web vulnerability has been discovered in the official IBM BlueMix Cloud online service web-application. The vulnerability allows remote attackers to inject own malicious script codes to the application-side of the vulnerable module or function. The vulnerability is located in the app `name` parameter of the vulnerable `api v2` module PUT request. Remote attackers and low privileged web-application user accounts are able to inject own malicious script codes on the application-side of the vulnerable `create` module. The inject request method is PUT and the attack vector is persistent on the application-side of the cloud online service. The injection point of the issue is the vulnerable name input field and the execution point occurs in the `direct=classic/#/resources/` web context module. The security risk of the application-side vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.7. Exploitation of the persistent web vulnerability requires a low privileged web-application user account and low or medium user interaction. Successful exploitation of the vulnerability results in session hijacking, persistent phishing attacks, persistent external redirects to malicious source and persistent manipulation of affected or connected application modules. Request Method(s): [+] PUT Vulnerable Parameter(s): [+] name - app Affected Module(s): [+] direct=classic/#/resources/ Proof of Concept (PoC): ======================= The application-side vulnerability can be exploited by remote attackers with low privileged web-application user account and low or medium user interaction. For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue. PoC: Exploitation http://ift.tt/29tiYvD orgGuid=47946af2-edbe-4a81-882a-2ba72b338a86&spaceGuid=12a64eba-116d-4cde-8baa-a8a2f8bff507&appGuid=22121446-442a-46f6-b110-42566cc1abe8&detailType=overview&paneId=2 Manual steps to reproduce the vulnerability ... 1. Go to IBM blumix account 2. Now Click on service and API 3. Again click on Concept Insight and create a service. 4. Once the service created than go to that service. 5. Click on Service Credentials on left hand side 6. Click on Add credentials button and inject the XSS payload Note: "> and click on ADD button. 7. Once it will added XSS execute 8. Successful reproduce of the vulnerability! Note: IBM bluemix is cloud based platform where a multiple user's can be signed in for single service with different level of privileged so the above XSS can be used to exploit for all the same user who comes under the same service's with different level of privileged. Please, recognize as well that the rename app function is vulnerable to the same issue!

Source: Gmail -> IFTTT-> Blogger