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CVE-2023-34088 Stored Cross-Site-Scripting vulnerability in admin interface

Critical
caolanm published GHSA-7582-pwfh-3pwr May 31, 2023

Package

coolwsd

Affected versions

< 22.05.13
< 21.11.9.1

Patched versions

22.05.13
21.11.9.1
loolwsd
< 6.4.27
6.4.27

Description

Impact

A stored XSS vulnerability was found in Collabora Online. An attacker could create a document with an XSS payload as a document name. Later, if an administrator opens the admin console and navigates to the history page the document name is injected as unescaped HTML and executed as a script inside the context of the admin console. The administrator JWT used for the websocket connection can be leaked through this flaw.

Patches

Users should upgrade to Collabora Online 22.05.13 or higher; Collabora Online 21.11.9.1 or higher; Collabora Online 6.4.27 or higher.

Credits

Thanks to René de Sain (@renniepak) for reporting this flaw.

For more information

If you have any questions or comments about this advisory:

Severity

Critical

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
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:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

CVE ID

CVE-2023-34088

Weaknesses