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Stored XSS in indexedVolumes

Moderate
angrybrad published GHSA-6qjx-787v-6pxr May 25, 2023

Package

craftcms/cms (Craft CMS)

Affected versions

>= 4.0.0-RC1, <= 4.4.5

Patched versions

4.4.6

Description

Summary

XSS can be triggered via the Update Asset Index utility

PoC

  1. Access setting tab
  2. Create new assets
  3. In assets name inject payload: "<script>alert(26)</script>
  4. Click Utilities tab
  5. Choose all volumes, or volume trigger xss
  6. Click Update asset indexes.

XSS will be triggered

Json response volumes name makes triggers the payload

"session":{"id":1,"indexedVolumes":{"1":"\"<script>alert(26)</script>"},

It’s run on every POST request in the utility.

Resolved in 8c2ad0b

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
Low

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:L

CVE ID

CVE-2023-33197

Weaknesses

Credits