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
Due to a missing CSRF token at the login of a cookie based session, an attacker can create a fake login page and simulate a possible login in Zammad to get login data.
Special 🙏 and 🤘 and ❤️ to:
N: Ethan Jael B. Melegrito
D: Security Researcher
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-2019-01
Send all remarks to security issues to security @ zammad.com.