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:

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:

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.

Signup
Together we turn your customers into fans.
Start free trial!
Newsletter
All releases and news directly in your inbox.
Subscribe to the newsletter