Vulnerability · Published Aug 1, 2024 · Assigned by Mattermost
CVE-2024-29977Malicious remote can create arbitrary reactions on arbitrary posts
Low 2.7
In plain English
A low-severity improper access control in Mattermost from Mattermost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)2.7Low
Exploit odds (30 days)0.3%top 79.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6 fail to properly validate synced reactions, when shared channels are enabled, which allows a malicious remote to create arbitrary reactions on arbitrary posts
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | 9.5.7+incompatible, 9.9.1+incompatible | GO-2024-3030 |
| Go | github.com/mattermost/mattermost-server/v5 | no fix listed | GO-2024-3030 |
| Go | github.com/mattermost/mattermost-server/v6 | no fix listed | GO-2024-3030 |
| Go | github.com/mattermost/mattermost/server/v8 | 9.5.7 | GHSA-jq3g-xqpx-37x3 |
| Go | github.com/mattermost/mattermost/server/v8 | 9.9.1 | GHSA-jq3g-xqpx-37x3 |
| Go | github.com/mattermost/mattermost/server/v8 | no fix listed | GO-2024-3030 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | 9.9.09.5.0 – through 9.5.6 |
Weakness: CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N