Username enumeration attack in goauthentik
CVE-2023-39522

5.3MEDIUM

Key Information:

Vendor

Goauthentik

Status
Authentik
Vendor
CVE Published:
29 August 2023

What is CVE-2023-39522?

goauthentik is an open-source Identity Provider. In affected versions using a recovery flow with an identification stage an attacker is able to determine if a username exists. Only setups configured with a recovery flow are impacted by this. Anyone with a user account on a system with the recovery flow described above is susceptible to having their username/email revealed as existing. An attacker can easily enumerate and check users' existence using the recovery flow, as a clear message is shown when a user doesn't exist. Depending on configuration this can either be done by username, email, or both. This issue has been addressed in versions 2023.5.6 and 2023.6.2. Users are advised to upgrade. There are no known workarounds for this issue.

Affected Version(s)

authentik >= 2023.6.0, < 2023.6.2 < 2023.6.0, 2023.6.2

authentik < 2023.5.6 < 2023.5.6

References

https://github.com/goauthentik/authentik/security/advisor...
x_refsource_CONFIRM
https://github.com/goauthentik/authentik/commit/aa874dd92...
x_refsource_MISC

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.