CVE-2024-28855: ZITADEL vulnerable to improper HTML sanitization
Impact
ZITADEL uses Go templates to render the login UI.
Due to a improper use of the text/template instead of the html/template package, the Login UI did not sanitize input parameters. An attacker could create a malicious link, where he injected code which would be rendered as part of the login screen. While it was possible to inject HTML including javascript, the execution of such scripts would be prevented by the Content Security Policy.
Patches
2.x versions are fixed on >= 2.47.3 2.46.x versions are fixed on >= 2.46.1 2.45.x versions are fixed on >= 2.45.1 2.44.x versions are fixed on >= 2.44.3 2.43.x versions are fixed on >= 2.43.9 2.42.x versions are fixed on >= 2.42.15 2.41.x versions are fixed on >= 2.41.15
ZITADEL recommends upgrading to the latest versions available in due course.
Workarounds
There is no workaround since a patch is already available.
Questions
If you have any questions or comments about this advisory, please email us at security@zitadel.com
Credits
Thanks to Daniel Philipp - owt and Thomas Wickham - synopsis for reporting this.
Other sources
ZITADEL, open source authentication management software, uses Go templates to render the login UI. Due to a improper use of the text/template instead of the html/template package, the Login UI did not sanitize input parameters prior to versions 2.47.3, 2.46.1, 2.45.1, 2.44.3, 2.43.9, 2.42.15, and 2.41.15. An attacker could create a malicious link, where he injected code which would be rendered as part of the login screen. While it was possible to inject HTML including JavaScript, the execution of such scripts would be prevented by the Content Security Policy. Versions 2.47.3, 2.46.1, 2.45.1, 2.44.3, 2.43.9, 2.42.15, and 2.41.15 contain a patch for this issue. No known workarounds are available.
— MITRE
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2024-28855?
CVE-2024-28855 has been classified as a significant security vulnerability due to improper input sanitization in the ZITADEL login UI.
How do I fix CVE-2024-28855?
To fix CVE-2024-28855, upgrade ZITADEL to version 2.47.4 or later.
What versions of ZITADEL are affected by CVE-2024-28855?
CVE-2024-28855 affects ZITADEL versions prior to 2.47.4.
What exploit can occur due to CVE-2024-28855?
An attacker could exploit CVE-2024-28855 to inject malicious code into the login UI through crafted links.
Is it safe to use ZITADEL version 2.46.0 with CVE-2024-28855?
Using ZITADEL version 2.46.0 is not safe as it is affected by CVE-2024-28855 and lacks the necessary input sanitization.