Security Advisory
ZAA-2021-09
· 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-2021-09
- Date: 10/05/2021
- Title: Privilege Escalation
- Severity: High
- Product: Zammad 1.0.x up to 4.1.0
- Fixed in: Zammad 4.1.1, 5.0.0
- References:
--> CVE: CVE-2021-42086
Vulnerability Descriptions
Privilege Escalation
Agent users are not allowed to modify other agent or admin users. However, under special circumstances, they might be able to send specially crafted requests leading to modification of agent users that can subsequently be used to log in with admin privileges
Special 🙏 and 🤘 and ❤️ to:
- N: Rajesh Pangare
- D: Security Researcher
- W: https://raj3shp.medium.com
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-2021-09
Send all remarks to security issues to security@zammad.com.