Security Advisory
ZAA-2021-07
· 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-2021-07
- Date: 06/08/2020
- Title: Text injection/Content Spoofing in 404 page
- Severity: very low
- Product: Zammad 1.0.x up to 4.0.0
- Fixed in: Zammad 4.0.1, 4.1.0
- References:
--> CVE: CVE-2021-35300
Vulnerability Descriptions
Text injection/Content Spoofing in 404 page
Zammad comes with a custom "404 - Not Found" page to show users that the requested URL does not exist. However, when requesting a specially crafted URL the page will get rendered faulty which might lead users into visiting the attackers page.
Special 🙏 and 🤘 and ❤️ to:
- N: Lutfu
- C: SpyHackerz
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-2021-07
Send all remarks to security issues to security@zammad.com.