CVE-2023-5196

Medium

Description

Mattermost fails to enforce character limits in all possible notification props allowing an attacker to send a really long value for a notification_prop resulting in the server consuming an abnormal quantity of computing resources and possibly becoming temporarily unavailable for its users.

SeverityMedium
CVSS6.5
Exploit probability—
ProductMattermost
PublishedSep 29, 2023
First seenSep 29, 2023

How to fix

Update
  • mattermost mattermost7.8.10, 8.0.2, 8.1.1 or later
  • github.com/mattermost/mattermost/server/v88.1.1, 8.0.2 or later
  • github.com/mattermost/mattermost-server/v67.8.10 or later

Affected products

ProductAffected versionsFixed in
mattermost mattermost7.0.0 ≤ v < 7.8.10, 8.0.0 ≤ v < 8.0.2, 8.1.0 ≤ v < 8.1.17.8.10, 8.0.2, 8.1.1
github.com/mattermost/mattermost/server/v8Go8.1.0 ≤ v < 8.1.1, 8.0.0 ≤ v < 8.0.28.1.1, 8.0.2
github.com/mattermost/mattermost-server/v6Gov < 7.8.107.8.10

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CVE-2023-5196 · Mattermost · Dark Radar