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DOM-XSS on Backoffice login screen.

Moderate severity GitHub Reviewed Published Dec 12, 2023 in umbraco/Umbraco-CMS • Updated Apr 22, 2024

Package

nuget Umbraco.CMS (NuGet)

Affected versions

>= 10.0.0, < 10.8.1
>= 11.0.0, < 12.3.4

Patched versions

10.8.1
12.3.4

Description

Impact

Cross-site scripting (XSS) enable attackers to bring malicious content into a website or application.

Explanation of the vulnerability

A DOM-XSS can be exploited when users are successfully logging into the Backoffice.

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 Apr 22, 2024

Severity

Moderate

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
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
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:L/PR:N/UI:R/S:U/C:N/I:L/A:N

EPSS score

0.046%
(18th percentile)

Weaknesses

CVE ID

CVE-2023-48313

GHSA ID

GHSA-v98m-398x-269r

Source code

Credits

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