CVE-2024-29891: zitadel File Upload RCE — Fix

Description

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.

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CVSS v3.1 Score

8.7

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Weakness Type (CWE)

CWE-434 Unrestricted Upload

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
zitadel	zitadel	< 2.42.17
zitadel	zitadel	2.43.0 — 2.43.11
zitadel	zitadel	2.44.0 — 2.44.7
zitadel	zitadel	2.45.0 — 2.45.5
zitadel	zitadel	2.46.0 — 2.46.5
zitadel	zitadel	2.47.0 — 2.47.8
zitadel	zitadel	2.48.0 — 2.48.3

References

Advisories & Patches

https://github.com/zitadel/zitadel/security/advisories/GHSA-hr5w-cwwq-2v4m https://github.com/zitadel/zitadel/security/advisories/GHSA-hr5w-cwwq-2v4m

Other References

Frequently Asked Questions

What is CVE-2024-29891? +

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. It has a CVSS v3.1 base score of 8.7 (HIGH).

How severe is CVE-2024-29891? +

CVE-2024-29891 has a CVSS v3.1 score of 8.7 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-29891? +

CVE-2024-29891 affects products from zitadel, specifically: zitadel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-29891? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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