What is CVE-2017-18883?

CVE-2017-18883 is a critical-severity vulnerability in Mattermost Mattermost_server, classified under Insufficient Entropy. CVSS score: 9.1/10. Published 2020-06-19.

How severe is CVE-2017-18883?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Mattermost Mattermost_server

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.

EPSS: 0.011 (62.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Mattermost Mattermost_server — versions 4.3.0
N/a — versions n/a

Weakness classification (CWE)

CWE-331 — Insufficient Entropy

References

cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2017-18883?: CVE-2017-18883 is a critical-severity vulnerability in Mattermost Mattermost_server, classified under Insufficient Entropy. CVSS score: 9.1/10. Published 2020-06-19.
How severe is CVE-2017-18883?: Critical severity. CVSS v3 base score is 9.1 out of 10.