CVE-2024-29977 — Improper Access Control in Mattermost Mattermost-server

CWE-284 — Improper Access Control5 documents4 sources
Severity
4.3MEDIUMNVD
CNA2.7
EPSS
0.2%
top 63.66%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Github.com Mattermost Mattermost-serverGithub.com Mattermost Mattermost Server V8Mattermost
Timeline
PublishedAug 1
Latest updateAug 6

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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NExploitability: 2.8 | Impact: 1.4

Affected Packages4 packages

▶NVDmattermost/mattermost9.5.0 — 9.5.7+1
▶Gogithub.com/mattermost_mattermost-server9.5.0+incompatible — 9.5.7+incompatible+1
▶CVEListV5mattermost/mattermost9.5.0 — 9.5.6+1

🔴Vulnerability Details

4
OSV
Mattermost failed to properly validate synced reactions in github.com/mattermost/mattermost-server↗2024-08-06
▶
CVEList
Malicious remote can create arbitrary reactions on arbitrary posts↗2024-08-01
▶
OSV
Mattermost failed to properly validate synced reactions↗2024-08-01
▶
GHSA
Mattermost failed to properly validate synced reactions↗2024-08-01
▶
CVE-2024-29977 — Improper Access Control | cvebase