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Unauthorized removal of Bots from Conversations

Moderate
comawill published GHSA-xmjc-c6w3-pcp4 Jan 26, 2023

Package

wire-server (wire)

Affected versions

<= 2022-11-03

Patched versions

>= 2022-12-09 or >=4.29.0

Description

Impact

Due to a missing permissions check, every member of a Conversation can remove a Bot from this Conversation.
Only Conversation admins should be able to remove Bots, regular Conversations are not allowed to do so.

Patches

  • The issue is fixed in wire-server 2022-12-09 and is already deployed on all Wire managed services.
  • On-premise instances of wire-server need to be updated to 2022-12-09/Chart 4.29.0, so that their backends are no longer affected.

Workarounds

  • No workarounds known

For more information

If you have any questions or comments about this advisory feel free to email us at [email protected]

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
None
Scope
Unchanged
Confidentiality
None
Integrity
None
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:N/I:N/A:H

CVE ID

CVE-2023-22737

Weaknesses

Improper Handling of Insufficient Permissions or Privileges

The product does not handle or incorrectly handles when it has insufficient privileges to access resources or functionality as specified by their permissions. This may cause it to follow unexpected code paths that may leave the product in an invalid state. Learn more on MITRE.