CVE-2024-39361 - CVE House

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Status published Low CVE-2024-39361

Creating posts with user-defined IDs permitted in CreatePost API

3.1 CVSS

Vulnerability Description

Mattermost versions 9.8.0, 9.7.x <= 9.7.4, 9.6.x <= 9.6.2 and 9.5.x <= 9.5.5 fail to prevent users from specifying a RemoteId for their posts which allows an attacker to specify both a remoteId and the post ID, resulting in creating a post with a user-defined post ID. This can cause some broken functionality in the channel or thread with user-defined posts

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Juho Forsén

References

https://mattermost.com/security-updates

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Affected Vendor

Mattermost

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Affected Software

Mattermost

Vulnerable Versions:

9.8.0, 9.7.0, 9.6.0, 9.5.0, 9.9.0, 9.8.1, 9.7.5, 9.6.3, 9.5.6

Timeline

Official Publish: July 3rd, 2024

Last Modified: August 2nd, 2024

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application

T1068 Exploitation for Privilege Escalation

Privilege Escalation

T1078 Valid Accounts

T1213 Data from Information Repositories

T1565.002 Stored Data Manipulation