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SMTP misconfiguration leading to "Forgot Password" exploit that leaks registered user email.

Low severity GitHub Reviewed Published Dec 12, 2023 in umbraco/Umbraco-CMS • Updated Jan 12, 2024

Package

nuget Umbraco.CMS (NuGet)

Affected versions

>= 8.0.0, < 8.18.10
>= 9.0.0, < 10.8.1
>= 11.0.0, < 12.3.4

Patched versions

8.18.10
10.8.1
12.3.4

Description

Impact

A user enumeration attack is possible when SMTP is not setup correctly, but reset password is enabled

Explanation of the vulnerability

Two different error messages was shown, based on if the user exists or not when using the forgot password functionality, when the SMTP was configured but do not response.

References

@bergmania bergmania published to umbraco/Umbraco-CMS Dec 12, 2023
Published by the National Vulnerability Database Dec 12, 2023
Published to the GitHub Advisory Database Dec 13, 2023
Reviewed Dec 13, 2023
Last updated Jan 12, 2024

Severity

Low

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS score

0.046%
(18th percentile)

Weaknesses

CVE ID

CVE-2023-49274

GHSA ID

GHSA-8qp8-9rpw-j46c

Source code

Credits

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