CVE-2017-18876: Medium severity mattermost vulnerability
Published Jun 19, 2020
·Updated
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2 when local storage for files is used. A System Admin can test for the existence of an arbitrary file.
Affected Software
6 affected components
Mattermost Mattermost Server<4.1.2
Mattermost Mattermost Server>=4.2.0<4.2.1
Mattermost Mattermost Server=4.3.0-rc1
Mattermost Mattermost Server=4.3.0-rc2
Mattermost Mattermost Server=4.3.0-rc3
Mattermost Mattermost Server=4.3.0-rc4
Event History
Jun 19, 2020
CVE Published
via MITRE·04:50 PM
Data Sourced
via MITRE·04:50 PM
Description
Frequently Asked Questions
1
What is the severity of CVE-2017-18876?
CVE-2017-18876 is rated as a moderate severity vulnerability due to its potential impact on file system security.
2
How do I fix CVE-2017-18876?
To fix CVE-2017-18876, upgrade Mattermost Server to version 4.3.0 or later.
3
Who is affected by CVE-2017-18876?
CVE-2017-18876 affects Mattermost Server versions prior to 4.3.0, including 4.2.1, and 4.1.2.
4
What type of vulnerability is CVE-2017-18876?
CVE-2017-18876 is a local file exposure vulnerability that allows system administrators to test for the existence of arbitrary files.
5
Is local storage for files secure in versions affected by CVE-2017-18876?
Local storage for files is not secure in versions affected by CVE-2017-18876, as it enables potential unauthorized file access.