CVE-2023-40703
Medium
Description
Mattermost fails to properly limit the characters allowed in different fields of a block in Mattermost Boards allowing a attacker to consume excessive resources, possibly leading to Denial of Service, by patching the field of a block using a specially crafted string.
SeverityMedium
CVSS4.3
Exploit probability—
Product
Mattermost
PublishedNov 27, 2023
First seenNov 27, 2023
Weakness typeCWE-400Uncontrolled resource consumption
How to fix
Update
- github.com/mattermost/mattermost/server/v89.1.1, 9.0.2, 8.1.4 or later
- github.com/mattermost/mattermost-server/v67.8.13 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mattermost mattermost | v ≤ 7.8.12, 8.0.0 ≤ v ≤ 8.1.3, 9.0.0 ≤ v ≤ 9.0.1, 9.1.0 | — |
| github.com/mattermost/mattermost/server/v8Go | 9.1.0 ≤ v < 9.1.1, 9.0.0 ≤ v < 9.0.2, v < 8.1.4 | 9.1.1, 9.0.2, 8.1.4 |
| github.com/mattermost/mattermost-server/v6Go | v < 7.8.13 | 7.8.13 |
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