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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
mitreCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 53%
VendorProductVersion
mattermostmattermost_server
𝑥
< 4.1.2
mattermostmattermost_server
4.2.0 ≤
𝑥
< 4.2.1
mattermostmattermost_server
4.3.0:rc1
mattermostmattermost_server
4.3.0:rc2
mattermostmattermost_server
4.3.0:rc3
mattermostmattermost_server
4.3.0:rc4
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://mattermost.com/security-updates/
https://mattermost.com/security-updates/