CVE-2017-18882: 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 can occur via OpenGraph data.
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-2017-18882?
CVE-2017-18882 has a medium severity rating due to its potential for exploitation via cross-site scripting (XSS).
2
How do I fix CVE-2017-18882?
To fix CVE-2017-18882, you should upgrade Mattermost Server to version 4.3.0 or later, or the specified remedial versions 4.2.1 or 4.1.2.
3
What types of attacks can CVE-2017-18882 enable?
CVE-2017-18882 can enable attackers to execute malicious scripts in the context of a user's session through XSS attacks.
4
What versions of Mattermost are affected by CVE-2017-18882?
Mattermost Server versions prior to 4.3.0, 4.2.1, and 4.1.2 are affected by CVE-2017-18882.
5
Is there a workaround for CVE-2017-18882 if immediate patching isn’t possible?
There are no official workarounds for CVE-2017-18882; patching to a secure version is strongly recommended.