Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send information regarding vulnerabilities in Zammad to: security at zammad.com
Zammad allows for users to view ticket customer details associated with specific customers. However, the application does not properly implement access controls related to this functionality. As such, users of one company are able to access ticket data from other companies.
Due to the multi-tenant nature of this application, users who can access ticket details from one organization to the next allows for users to ex-filtrate potentially sensitive data of other companies.
Special 🙏 and 🤘 and ❤️ to:
N: Guardian Project
N: Center for Digital Resilience
This vulnerability is fixed in the latest versions of Zammad and it is recommended to upgrade to one of these.
Fixed releases can be found at:
Or just update your Zammad if installed via OS package manager.
Online version of this advisory: https://zammad.com/news/security-advisory-zaa-2020-05
Send all remarks to security issues to security @ zammad.com.