CVE-2017-18894
First published: Fri Jun 19 2020(Updated: )
An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5, when used as an OAuth 2.0 service provider. Sometimes. resource-owner authorization is bypassed, allowing account takeover.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mattermost | <4.0.5 | |
| Mattermost | >=4.1.0<4.1.1 | |
| Mattermost | =4.2.0-rc1 | |
| Mattermost | =4.2.0-rc2 | |
| Mattermost | =4.2.0-rc3 | |
| Mattermost | =4.2.0-rc4 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2017-18894?
CVE-2017-18894 has a moderate severity rating due to the potential for account takeover through resource-owner authorization bypass.
How do I fix CVE-2017-18894?
To fix CVE-2017-18894, upgrade Mattermost Server to version 4.2.0 or later.
What versions of Mattermost Server are affected by CVE-2017-18894?
CVE-2017-18894 affects Mattermost Server versions prior to 4.2.0, including 4.0.5 and 4.1.0 to 4.1.1.
What type of vulnerability is CVE-2017-18894?
CVE-2017-18894 is an OAuth 2.0 authorization bypass vulnerability.
Can CVE-2017-18894 lead to data breaches?
Yes, CVE-2017-18894 can lead to account takeover, potentially allowing unauthorized access to user data.
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- version/mattermost/4.2.0-rc1
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