CVE-2024-41964: kirby Auth Bypass — Fix

Description

Kirby is a CMS targeting designers and editors. Kirby allows to restrict the permissions of specific user roles. Users of that role can only perform permitted actions. Permissions for creating and deleting languages have already existed and could be configured, but were not enforced by Kirby's frontend or backend code. A permission for updating existing languages has not existed before the patched versions. So disabling the languages.* wildcard permission for a role could not have prohibited updates to existing language definitions. The missing permission checks allowed attackers with Panel access to manipulate the language definitions. The problem has been patched in Kirby 3.6.6.6, Kirby 3.7.5.5, Kirby 3.8.4.4, Kirby 3.9.8.2, Kirby 3.10.1.1, and Kirby 4.3.1. Please update to one of these or a later version to fix the vulnerability. There are no known workarounds for this vulnerability.

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CVSS v3.1 Score

8.1

HIGH

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

Weakness Type (CWE)

CWE-863 Incorrect Authorization

Affected Products

Vendor	Product	Versions
getkirby	kirby	< 3.6.6.6
getkirby	kirby	3.7.0 — 3.7.5.5
getkirby	kirby	3.8.0 — 3.8.4.4
getkirby	kirby	3.9.0 — 3.9.8.2
getkirby	kirby	3.10.0 — 3.10.1.1
getkirby	kirby	4.0.0 — 4.3.1

References

Advisories & Patches

https://github.com/getkirby/kirby/commit/ab95d172667c3cd529917c2bc94d3c7969706d23 https://github.com/getkirby/kirby/security/advisories/GHSA-jm9m-rqr3-wfmh

Frequently Asked Questions

What is CVE-2024-41964? +

Kirby is a CMS targeting designers and editors. Kirby allows to restrict the permissions of specific user roles. Users of that role can only perform permitted actions. Permissions for creating and deleting languages have already existed and could be configured, but were not enforced by Kirby's frontend or backend code. A permission for updating existing languages has not existed before the patched versions. So disabling the languages.* wildcard permission for a role could not have prohibited updates to existing language definitions. The missing permission checks allowed attackers with Panel access to manipulate the language definitions. The problem has been patched in Kirby 3.6.6.6, Kirby 3.7.5.5, Kirby 3.8.4.4, Kirby 3.9.8.2, Kirby 3.10.1.1, and Kirby 4.3.1. Please update to one of these or a later version to fix the vulnerability. There are no known workarounds for this vulnerability. It has a CVSS v3.1 base score of 8.1 (HIGH).

How severe is CVE-2024-41964? +

CVE-2024-41964 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-2024-41964? +

CVE-2024-41964 affects products from getkirby, specifically: kirby. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-41964? +

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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