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Neos CMS Cross Site Scripting vulnerability

Moderate severity GitHub Reviewed Published Sep 19, 2023 to the GitHub Advisory Database • Updated Jan 16, 2024

Package

composer neos/media-browser (Composer)

Affected versions

< 7.3.19
>= 8.0.0, < 8.0.16
>= 8.1.0, < 8.1.11
>= 8.2.0, < 8.2.11
>= 8.3.0, < 8.3.9

Patched versions

7.3.19
8.0.16
8.1.11
8.2.11
8.3.9

Description

Cross Site Scripting (XSS) vulnerability in Neos CMS 8.3.3 allows a remote authenticated attacker to execute arbitrary code via a crafted SVG file uploaded to the neos/management/media component. To make use of this attack vector, the attacker must either be able to upload a maliciously crafted file or coerce someone with the needed access to upload said file to Neos. Even if such a file is uploaded and subsequently delivered, it is possible to use CSP to protect against attacks being executed from such a file.

References

Published by the National Vulnerability Database Sep 18, 2023
Published to the GitHub Advisory Database Sep 19, 2023
Reviewed Sep 21, 2023
Last updated Jan 16, 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
Changed
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:C/C:L/I:L/A:N

EPSS score

0.134%
(49th percentile)

Weaknesses

CVE ID

CVE-2023-37611

GHSA ID

GHSA-6qjf-7g3j-qx25

Source code

Credits

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