Security Advisory
ZAA-2021-03
· Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad!
Security Advisory Details
- ID: ZAA-2021-03
- Date: 06/08/2020
- Title: Stored XSS in various model attributes
- Severity: medium
- Product: Zammad 1.0.x up to 4.0.0
- Fixed in: Zammad 4.0.1, 4.1.0
- References:
--> CVE: CVE-2021-35298
Vulnerability Descriptions
Stored XSS in various model attributes
Zammad comes with a functionality store notes to various Models like Groups, Roles etc. It was possible to store XSS in these notes for an attacker with permissions to these Models. The malicious code would then be executed in the context of the current user session. However, storing notes to all of these Models required admin permissions.
Special 🙏 and 🤘 and ❤️ to:
- N: ChungPD
- C: VNPT ISC
Recommended Resolution
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:
- https://zammad.org/
- https://ftp.zammad.com/
Or just update your Zammad if installed via OS package manager.
Additional information
Online version of this advisory: https://zammad.com/en/advisories/zaa-2021-03
Send all remarks to security issues to security@zammad.com.