Private event disclosure via overbroad WebSocket broadcasts
Published Jun 19, 2020 · Updated Aug 5, 2024
Information disclosure in Mattermost Server before 4.8.1, 4.7.4, and 4.6.3 allows remote authenticated users to receive private WebSocket events. The WebSocket event dispatch path broadcasts events during certain user-management operations beyond the intended audience; the specific event types and code path are undisclosed. Exploitation requires a highly privileged authenticated account and a live network WebSocket connection, and the reported consequence is limited to unintended disclosure of user-management event data.
Summary
What happened
Information disclosure in Mattermost Server before 4.8.1, 4.7.4, and 4.6.3 allows remote authenticated users to receive private WebSocket events. The WebSocket event dispatch path broadcasts events during certain user-management operations beyond the intended audience; the specific event types and code path are undisclosed. Exploitation requires a highly privileged authenticated account and a live network WebSocket connection, and the reported consequence is limited to unintended disclosure of user-management event data.
The record
- CVE
- CVE-2018-21260
- Published
- Jun 19, 2020
- Updated
- Aug 5, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-200
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Jun 19, 2020CVE publishedPublication date reported by the CVE source.
- Aug 5, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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