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Statamic CMS vulnerable to remote code execution via form uploads

High severity GitHub Reviewed Published Nov 14, 2023 in statamic/cms • Updated Nov 22, 2023

Package

composer statamic/cms (Composer)

Affected versions

>= 4.0.0, < 4.34.0
< 3.4.14

Patched versions

4.34.0
3.4.14

Description

Impact

Similar to another advisory, certain additional PHP files crafted to look like images may be uploaded regardless of mime type validation rules. This affects front-end forms using the "Forms" feature, and asset upload fields in the control panel.

Patches

It has been patched in 3.4.14 and 4.34.0.

References

@jasonvarga jasonvarga published to statamic/cms Nov 14, 2023
Published by the National Vulnerability Database Nov 14, 2023
Published to the GitHub Advisory Database Nov 14, 2023
Reviewed Nov 14, 2023
Last updated Nov 22, 2023

Severity

High

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
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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:N/S:U/C:H/I:H/A:H

EPSS score

0.065%
(30th percentile)

Weaknesses

CVE ID

CVE-2023-48217

GHSA ID

GHSA-2r53-9295-3m86

Source code

Credits

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