CVE-2017-18878: 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. Knowledge of a session ID allows revoking another user's session.
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·06:08 PM
Data Sourced
via MITRE·06:08 PM
Description
Frequently Asked Questions
1
What is the severity of CVE-2017-18878?
CVE-2017-18878 has a medium severity rating as it allows unauthorized session revocation using knowledge of a session ID.
2
How do I fix CVE-2017-18878?
To fix CVE-2017-18878, upgrade Mattermost Server to version 4.3.0 or later.
3
What systems are affected by CVE-2017-18878?
CVE-2017-18878 affects Mattermost Server versions before 4.3.0, including all 4.1.x and 4.2.x releases.
4
What type of vulnerability is CVE-2017-18878?
CVE-2017-18878 is a session management vulnerability that allows users to revoke others' sessions.
5
Can I mitigate CVE-2017-18878 without updating?
There are no known effective mitigations for CVE-2017-18878 other than updating to a secure version.