-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Advisory ID: SYSS-2019-043 Product: In-App & Desktop Notification for Jira Manufacturer: Infosysta Affected Version(s): 1.6.13_J8 Tested Version(s): 1.6.13_J8 Vulnerability Type: Authentication/Authorization Bypass Risk Level: Medium Solution Status: Closed Manufacturer Notification: 2019-09-24 Solution Date: 2019-10-01 Public Disclosure: 2019-10-23 CVE Reference: CVE-2019-16907 Author of Advisory: Erik Steltzner, SySS GmbH Fabian Krone, SySS GmbH Sascha Heider, SySS GmbH ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Overview: In-App & Desktop Notification for Jira is a Plug-in that displays email notification from Jira directly within the application. The manufacturer describes the product as follows (see [1]): "In-app & Desktop Notifications for Jira app allows you to get all of Jira's email notifications in front of you. Now you won't have to search through all your emails to check for a specific event in Jira, but all what you need to do is to check the notification section in Jira and see all events that happened in Jira and are related to you. You will also receive instant Desktop notifications as well as you will be able to add comments to the tickets directly from the notification." ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Vulnerability Details: It is possible to read out all user names within Jira without authentication/authorization. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Proof of Concept (PoC): Using the following path it is possible to list all existing user names: /plugins/servlet/nfj/UserFilter?searchQuery=@ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Solution: Before delivering a reply, it should be checked whether a request has the necessary authorization. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Disclosure Timeline: 2019-09-10: Vulnerability discovered 2019-09-24: Vulnerability reported to manufacturer 2019-10-01: Patch released by manufacturer 2019-10-23: Public disclosure of vulnerability ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ References: [1] Product website for In-App & Desktop Notification for Jira https://marketplace.atlassian.com/apps/1217434/in-app-desktop-notifications-for-jira [2] SySS Security Advisory SYSS-2019-043 https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2019-043.txt [3] SySS Responsible Disclosure Policy https://www.syss.de/en/news/responsible-disclosure-policy/ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Credits: This security vulnerability was found by Erik Steltzner, Fabian Krone and Sascha Heider of SySS GmbH. E-Mail: erik.steltzner@syss.de Public Key: ://www.syss.de/fileadmin/dokumente/PGPKeys/Erik_Steltzner.asc Key ID: 0x4C7979CE53163268 Key Fingerprint: 6538 8216 555B FBE7 1E01 7FBD 4C79 79CE 5316 3268 E-Mail: fabian.krone@syss.de Public Key: ://www.syss.de/fileadmin/dokumente/PGPKeys/Fabian_Krone.asc Key ID: 0xBFDF30ABD10EA0F4 Key Fingerprint: 0ADE D2AA AE27 7DDA A8F0 C051 BFDF 30AB D10E A0F4 E-Mail: sascha.heider@syss.de Public Key: ://www.syss.de/fileadmin/dokumente/PGPKeys/Sascha_Heider.asc Key ID: 0x06C4F8D7FCE9AF94 Key Fingerprint: F99E 89B8 EF77 C34F 6F9F 0E19 06C4 F8D7 FCE9 AF94 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Disclaimer: The information provided in this security advisory is provided "as is" and without warranty of any kind. Details of this security advisory may be updated in order to provide as accurate information as possible. The latest version of this security advisory is available on the SySS Web site. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Copyright: Creative Commons - Attribution (by) - Version 3.0 URL: https://creativecommons.org/licenses/by/3.0/deed.en -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEZTiCFlVb++ceAX+9THl5zlMWMmgFAl2wTyYACgkQTHl5zlMW MmhNtg/+NAuoLbSdHSow25HiVL4eFstwd2Bnh4CWGba2/E0YNZ3DzD8/6cSCzr9s 5pOU9fTz3lyZHWh7r2Jg8IutTaPk3AHC6qHx8hvACqhqnpHhfejCHtqc6ROK2VRT 1vGCp3j7EqDN52e7lQZaDmNxAnhNu7CeCIKHIdzKnEkg4owlEI5JYwzwF8YogTqF keiQjd/eVw9o2NFjy+b1+q2/UuAeuRZ1Rd/YZ8RyvLuG/lsT2oOCdikXnWN/AIDm q8rQe8uiVoA9fjixsNWHCW6PcnwPtMwu3K/pFLmzh7n482J/VIzjBfngnnRgrHCG /UvwUGG/UgXxiWUKbEoVrA3TeOfTybOWQ3+SHKyZdUBUmoIJBzZq5CdJRJMpne5U 0iY1qbFwZL5XVIhgfN16W3OOMp4cUk3mbT9OWTRg2S13pZpllONjM4E5+cIGpjwX gTH7FzEVT8ywLEWN+m1ISA4LDCK9mXS+LM8s/RLLRcDibBaUdqCyb8UTxnVcaFtk syO+dTMtIJNymvM+hpkRadMuKxaL5Rm7SOfjrpA7aQORlwFxM2NGrmNQcos7jUQL Z2M8sinSq/Ht+SPbIwnxzE+z1Ve6xFBNgnT1PWu5MPOOCkM6Qo9f22EhVjTVS6Td /BTiVKZPEG58O5oN8Oq8r3w6LX2i9wmUBAqAyGBFCMkQ5JLKA/U= =mNrG -----END PGP SIGNATURE-----