CVE-2024-42490: authentik Access Control Flaw — Fix

Description

authentik is an open-source Identity Provider. Several API endpoints can be accessed by users without correct authentication/authorization. The main API endpoints affected by this are /api/v3/crypto/certificatekeypairs/<uuid>/view_certificate/, /api/v3/crypto/certificatekeypairs/<uuid>/view_private_key/, and /api/v3/.../used_by/. Note that all of the affected API endpoints require the knowledge of the ID of an object, which especially for certificates is not accessible to an unprivileged user. Additionally the IDs for most objects are UUIDv4, meaning they are not easily guessable/enumerable. authentik 2024.4.4, 2024.6.4 and 2024.8.0 fix this issue.

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CVSS v3.1 Score

7.5

HIGH

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

Weakness Type (CWE)

CWE-285 CWE-285

Affected Products

Vendor	Product	Versions
goauthentik	authentik	< 2024.4.4
goauthentik	authentik	2024.6.0 — 2024.6.4

References

Advisories & Patches

https://github.com/goauthentik/authentik/commit/19318d4c00bb02c4ec3c4f8f15ac2e1dbe8d846c https://github.com/goauthentik/authentik/commit/359b343f51524342a5ca03828e7c975a1d654b11 https://github.com/goauthentik/authentik/security/advisories/GHSA-qxqc-27pr-wgc8

Frequently Asked Questions

What is CVE-2024-42490? +

authentik is an open-source Identity Provider. Several API endpoints can be accessed by users without correct authentication/authorization. The main API endpoints affected by this are /api/v3/crypto/certificatekeypairs/<uuid>/view_certificate/, /api/v3/crypto/certificatekeypairs/<uuid>/view_private_key/, and /api/v3/.../used_by/. Note that all of the affected API endpoints require the knowledge of the ID of an object, which especially for certificates is not accessible to an unprivileged user. Additionally the IDs for most objects are UUIDv4, meaning they are not easily guessable/enumerable. authentik 2024.4.4, 2024.6.4 and 2024.8.0 fix this issue. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-42490? +

CVE-2024-42490 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-42490? +

CVE-2024-42490 affects products from goauthentik, specifically: authentik. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-42490? +

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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