CVE-2024-29891: ZITADEL Improper Content-Type Validation Leads to Account Takeover via Stored XSS + CSP Bypass
Impact
ZITADEL users can upload their own avatar image and various image types are allowed.
Due to a missing check, an attacker could upload HTML and pretend it is an image to gain access to the victim's account in certain scenarios. A possible victim would need to directly open the supposed image in the browser, where a session in ZITADEL needs to be active for this exploit to work.
The exploit could only be reproduced if the victim was using Firefox. Chrome, Safari as well as Edge did not execute the code.
Patches
2.x versions are fixed on >= 2.48.3 2.47.x versions are fixed on >= 2.47.8 2.46.x versions are fixed on >= 2.46.5 2.45.x versions are fixed on >= 2.45.5 2.44.x versions are fixed on >= 2.44.7 2.43.x versions are fixed on >= 2.43.11 2.42.x versions are fixed on >= 2.42.17
ZITADEL recommends upgrading to the latest versions available in due course.
Workarounds
There is no workaround since a patch is already available.
References
None
Questions
If you have any questions or comments about this advisory, please email us at security@zitadel.com
Credits
Thanks to Amit Laish – GE Vernova for finding and reporting the vulnerability.
Other sources
ZITADEL users can upload their own avatar image and various image types are allowed. Due to a missing check, an attacker could upload HTML and pretend it is an image to gain access to the victim's account in certain scenarios. A possible victim would need to directly open the supposed image in the browser, where a session in ZITADEL needs to be active for this exploit to work. The exploit could only be reproduced if the victim was using Firefox. Chrome, Safari as well as Edge did not execute the code. This vulnerability is fixed in 2.48.3, 2.47.8, 2.46.5, 2.45.5, 2.44.7, 2.43.11, and 2.42.17.
— MITRE
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2024-29891?
CVE-2024-29891 is considered a medium severity vulnerability that could allow an attacker to upload malicious HTML disguised as an image.
How do I fix CVE-2024-29891?
To fix CVE-2024-29891, update ZITADEL to version 2.48.3, 2.47.8, 2.46.5, 2.45.5, or 2.44.7.
What versions of ZITADEL are affected by CVE-2024-29891?
CVE-2024-29891 affects ZITADEL versions prior to 2.48.3, 2.47.8, 2.46.5, 2.45.5, and 2.44.7.
Can CVE-2024-29891 allow an attacker to access user accounts?
Yes, CVE-2024-29891 can allow an attacker to gain access to a victim's account under certain circumstances.
What type of vulnerability is CVE-2024-29891?
CVE-2024-29891 is an input validation vulnerability related to file uploads.