CVE-2024-2447: mattermost server Access Control Flaw

Description

Mattermost versions 8.1.x before 8.1.11, 9.3.x before 9.3.3, 9.4.x before 9.4.4, and 9.5.x before 9.5.2 fail to authenticate the source of certain types of post actions, allowing an authenticated attacker to create posts as other users via a crafted post action.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Weakness Type (CWE)

CWE-284 CWE-284

CWE-346 CWE-346

Affected Products

Vendor	Product	Versions
mattermost	mattermost_server	8.1.0 — 8.1.11
mattermost	mattermost_server	9.3.0 — 9.3.3
mattermost	mattermost_server	9.4.0 — 9.4.4
mattermost	mattermost_server	9.5.0 — 9.5.2

References

Advisories & Patches

https://mattermost.com/security-updates https://mattermost.com/security-updates

Frequently Asked Questions

What is CVE-2024-2447? +

Mattermost versions 8.1.x before 8.1.11, 9.3.x before 9.3.3, 9.4.x before 9.4.4, and 9.5.x before 9.5.2 fail to authenticate the source of certain types of post actions, allowing an authenticated attacker to create posts as other users via a crafted post action. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2024-2447? +

CVE-2024-2447 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-2447? +

CVE-2024-2447 affects products from mattermost, specifically: mattermost_server. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-2447? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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