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                               CERT-Renater

                    Note d'Information No. 2024/VULN446
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DATE                : 28/10/2024

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running ZITADEL versions prior to 2.64.0,
                      2.63.5, 2.62.7, 2.61.4, 2.60.4, 2.59.5, 2.58.7.

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https://github.com/zitadel/zitadel/security/advisories/GHSA-3rmw-76m6-4gjc
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User Registration Bypass
High
livio-a published GHSA-3rmw-76m6-4gjc Oct 25, 2024

Package
ZITADEL (ZITADEL)

Affected versions
<2.58.6, <2.59.4, <2.60.3, <2.61.3, <2.62.6, < 2.63.4,

Patched versions
2.64.0, 2.63.5, 2.62.7, 2.61.4, 2.60.4, 2.59.5, 2.58.7


Description

Impact

Zitadel allows administrators to disable the user self-registration.
Due to a missing security check in versions prior to 2.63.4,
disabling the "User Registration allowed" option only hid the
registration button on the login page. Users could bypass this
restriction by directly accessing the registration URL
(/ui/login/loginname) and register a user that way.


Patches

2.x versions are fixed on >= 2.64.0
2.63.x versions are fixed on >= 2.63.5
2.62.x versions are fixed on >= 2.62.7
2.61.x versions are fixed on >= 2.61.4
2.60.x versions are fixed on >= 2.60.4
2.59.x versions are fixed on >= 2.59.5
2.58.x versions are fixed on >= 2.58.7


Workarounds

Updating to the patched version is the recommended solution.


Questions

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


Credits

Thanks to @sevensolutions and @evilgensec for disclosing this!


Severity
High

7.5/ 10

CVSS v3 base metrics

Attack vector
Network

Attack complexity
Low

Privileges required
None

User interaction
None

Scope
Unchanged

Confidentiality
High

Integrity
None

Availability
None

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

CVE ID
CVE-2024-49757

Weaknesses
No CWEs

Credits

    @evilgensec evilgensec Reporter
    @sevensolutions sevensolutions Reporter
    @fforootd fforootd Coordinator



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