CVE Vulnerabilities

CVE-2024-52307

Observable Timing Discrepancy

Published: Nov 21, 2024 | Modified: Aug 21, 2025
CVSS 3.x
5.6
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

authentik is an open-source identity provider. Due to the usage of a non-constant time comparison for the /-/metrics/ endpoint it was possible to brute-force the SECRET_KEY, which is used to authenticate the endpoint. The /-/metrics/ endpoint returns Prometheus metrics and is not intended to be accessed directly, as the Go proxy running in the authentik server container fetches data from this endpoint and serves it on a separate port (9300 by default), which can be scraped by Prometheus without being exposed publicly. authentik 2024.8.5 and 2024.10.3 fix this issue. Since the /-/metrics/ endpoint is not intended to be accessed publicly, requests to the endpoint can be blocked by the reverse proxy/load balancer used in conjunction with authentik.

Weakness

Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.

Affected Software

Name Vendor Start Version End Version
Authentik Goauthentik * 2024.8.5 (excluding)
Authentik Goauthentik 2024.10.0 (including) 2024.10.3 (excluding)

References