CVE-2017-18877: XSS
Published Jun 19, 2020
·Updated
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS attacks could occur against an OAuth 2.0 allow/deny page.
Affected Software
6 affected components
Mattermost Mattermost Server>=4.1.0<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-2017-18877?
CVE-2017-18877 has a medium severity level due to the potential for XSS attacks.
2
How do I fix CVE-2017-18877?
To fix CVE-2017-18877, upgrade Mattermost Server to version 4.3.0 or later.
3
What versions of Mattermost Server are affected by CVE-2017-18877?
CVE-2017-18877 affects Mattermost Server versions prior to 4.3.0, including 4.1.2, 4.2.1, and earlier.
4
What kind of attack is associated with CVE-2017-18877?
CVE-2017-18877 is associated with Cross-Site Scripting (XSS) attacks targeting an OAuth 2.0 allow/deny page.
5
Is there a patch available for CVE-2017-18877?
Yes, a patch is available by upgrading to Mattermost Server version 4.3.0 or later.