Unauthorized board linking via missing membership check
Published Jul 17, 2023 · Updated Oct 21, 2024
Incorrect authorization in Mattermost before 7.8.7, 7.9.5, or 7.10.3 allows remote authenticated users to link boards to private channels. The board-to-channel linking path accepts a target channel identifier and creates the association without confirming that the requester belongs to that channel. A low-privileged account is sufficient to alter board-channel associations outside its permitted channel access; the published impact is limited to integrity.
Summary
What happened
Incorrect authorization in Mattermost before 7.8.7, 7.9.5, or 7.10.3 allows remote authenticated users to link boards to private channels. The board-to-channel linking path accepts a target channel identifier and creates the association without confirming that the requester belongs to that channel. A low-privileged account is sufficient to alter board-channel associations outside its permitted channel access; the published impact is limited to integrity.
The record
- CVE
- CVE-2023-3582
- Published
- Jul 17, 2023
- Updated
- Oct 21, 2024
- Vendor
- Mattermost
- Product
- Mattermost
- Classifications
- CWE-863
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 17, 2023CVE publishedPublication date reported by the CVE source.
- Oct 21, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=7.10.2
- Affected versionversion=0 <=7.8.6
- Affected versionversion=0 <=7.9.4
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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