CVE-2017-18906

Aliases:GHSA-fpcr-4rr5-hpcpGO-2026-4477
Advisory lineage Upstream: 0 Downstream: 1
Modified
Published: 19 Jun 2020, 19:18
Last modified:05 Aug 2024, 21:37

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
8.1 HIGH
v3.1 (nvd)
EPSS Score
0.21% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

19 Jun 2020, 19:18
Published
Vulnerability first disclosed
05 Aug 2024, 21:37
Last Modified
Vulnerability information updated

Description

An issue was discovered in Mattermost Server before 4.0.0, 3.10.2, and 3.9.2, when Single Sign-On OAuth2 is used. An attacker could claim somebody else's account.

CVSS Metrics

  • v3.1•HIGH•Score: 8.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
  • v2.0•MEDIUM•Score: 4.9AV:N/AC:M/Au:S/C:P/I:P/A:N

EPSS Trends

Current EPSS score: 0.21%• Percentile: 43%

Techniques & Countermeasures

  • CWE-287•Improper Authentication

    When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Affected Systems

  • github.com/mattermost•mattermost-server

    < 3.9.2-0.20170714134023-b17fca0d5ee7 | ≥ 3.10.0, < 3.10.2 | ≥ 3.10.0+incompatible, < 3.10.2+incompatible

  • mattermost•mattermost_server

    < 3.9.2 | ≥ 3.10.0, < 3.10.2

References (8)