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Race condition in lockout policy execution

High
livio-a published GHSA-7h8m-vrxx-vr4m Nov 8, 2023

Package

ZITADEL

Affected versions

>=2.39.0,<2.40.4
<2.38.3

Patched versions

2.40.5
2.38.3

Description

Impact

ZITADEL provides administrators the possibility to define a Lockout Policy with a maximum amount of failed password check attempts. On every failed password check, the amount of failed checks is compared against the configured maximum.
Exceeding the limit, will lock the user and prevent further authentication.

In the affected implementation it was possible for an attacker to start multiple parallel password checks, giving him the possibility to try out more combinations than configured in the Lockout Policy.

Patches

2.x versions are fixed on >= 2.40.5
2.38.x versions are fixed on >= 2.38.3

Workarounds

There is no workaround since a patch is already available.

References

None

Questions

If you have any questions or comments about this advisory, please email us at security@zitadel.com

Severity

High
7.3
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVE ID

CVE-2023-47111

Weaknesses

No CWEs

Credits