ZITADEL Improper Content-Type Validation Leads to Account Takeover via Stored XSS + CSP Bypass

Summary

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.

Timeline

1. Mar 27, 2024, 7:18 PM UTCCVE published
2. Mar 28, 2024, 6:36 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: partial

3. Aug 2, 2024, 1:17 AM UTCRecord last updated

Affected versions

• zitadel zitadel

  fixed in 2.42.17; From 2.43.0 · fixed in 2.43.11; From 2.44.0 · fixed in 2.44.7; From 2.45.0 · fixed in 2.45.5; From 2.46.0 · fixed in 2.46.5; From 2.47.0 · fixed in 2.47.8; From 2.48.0 · fixed in 2.48.3

• github.com/zitadel/zitadelGo

  fixed in 2.42.17

• github.com/zitadel/zitadelGo

  From 2.43.0 · fixed in 2.43.11

• github.com/zitadel/zitadelGo

  From 2.44.0 · fixed in 2.44.7

• github.com/zitadel/zitadelGo

  From 2.45.0 · fixed in 2.45.5

• github.com/zitadel/zitadelGo

  From 2.46.0 · fixed in 2.46.5

• github.com/zitadel/zitadelGo

  From 2.47.0 · fixed in 2.47.8

• github.com/zitadel/zitadelGo

  From 2.48.0 · fixed in 2.48.3

• github.com/zitadel/zitadelGo

  All versions

References 8