CVE-2024-28855: zitadel Input Validation Flaw — Fix

Description

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.

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CVSS v3.1 Score

8.1

HIGH

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

Weakness Type (CWE)

CWE-20 Improper Input Validation

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
zitadel	zitadel	< 2.41.15
zitadel	zitadel	2.42.0 — 2.42.15
zitadel	zitadel	2.43.0 — 2.43.9
zitadel	zitadel	2.44.0 — 2.44.3
zitadel	zitadel	2.47.0 — 2.47.4
zitadel	zitadel	All
zitadel	zitadel	All
zitadel	zitadel	All
zitadel	zitadel	All
zitadel	zitadel	All

References

Advisories & Patches

https://github.com/zitadel/zitadel/security/advisories/GHSA-hfrg-4jwr-jfpj https://github.com/zitadel/zitadel/security/advisories/GHSA-hfrg-4jwr-jfpj

Other References

Frequently Asked Questions

What is CVE-2024-28855? +

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. It has a CVSS v3.1 base score of 8.1 (HIGH).

How severe is CVE-2024-28855? +

CVE-2024-28855 has a CVSS v3.1 score of 8.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-28855? +

CVE-2024-28855 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-2024-28855? +

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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