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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