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CRITICAL · 9.1

CVE-2017-18883

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2, when serving as an OAuth 2.0 Service Provider. There is low entropy for authorization data.

Vulnerability Description

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2, when serving as an OAuth 2.0 Service Provider. There is low entropy for authorization data.

CVSS Score

9.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE

Affected Products

VendorProductVersions
MattermostMattermost Server< 4.1.2

Related Weaknesses (CWE)

CWE-331

References

FAQ

What is CVE-2017-18883?

CVE-2017-18883 is a vulnerability with a CVSS score of 9.1 (CRITICAL). An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2, when serving as an OAuth 2.0 Service Provider. There is low entropy for authorization data.

How severe is CVE-2017-18883?

CVE-2017-18883 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2017-18883?

Check the references section above for vendor advisories and patch information. Affected products include: Mattermost Mattermost Server.