Security Advisory
ZAA-2021-18
· 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-2021-18
- Date: 10/05/2021
- Title: Command Injection via Package installation
- Severity: high
- Product: Zammad 1.0.x up to 4.1.0
- Fixed in: Zammad 4.1.1, 5.0.0
- References:
--> CVE: CVE-2021-42094
Vulnerability Descriptions
Command Injection via Package installation
Zammad comes with the functionality to upload custom Packages to extend it with features and more. However, there is the possibility to create files out of the application scope that an attacker can use to perform a Command Injection.
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-2021-18
Send all remarks to security issues to security@zammad.com.