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Umbraco has a Potential Code Execution Risk When Viewing SVG Files in Full Screen in Backoffice

Moderate severity GitHub Reviewed Published Oct 22, 2024 in umbraco/Umbraco-CMS • Updated Oct 22, 2024

Package

nuget Umbraco.Cms (NuGet)

Affected versions

>= 10.0.0, < 10.8.7
>= 13.0.0, < 13.5.2

Patched versions

10.8.7
13.5.2
nuget UmbracoCms (NuGet)
>= 8.0.0, < 8.18.15
8.18.15

Description

Impact

There is a potential risk of code execution for Backoffice users when they “preview” SVG files in full screen mode.

Workarounds

Server-side file validation is available to strip script tags from file's content during the file upload process.

References

@bergmania bergmania published to umbraco/Umbraco-CMS Oct 22, 2024
Published by the National Vulnerability Database Oct 22, 2024
Published to the GitHub Advisory Database Oct 22, 2024
Reviewed Oct 22, 2024
Last updated Oct 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
Low
User interaction
Required
Scope
Unchanged
Confidentiality
Low
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:L/UI:R/S:U/C:L/I:L/A:N

EPSS score

0.045%
(16th percentile)

Weaknesses

CVE ID

CVE-2024-48927

GHSA ID

GHSA-5955-cwv4-h7qh

Source code

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