Vulnerability Details : CVE-2018-21263
An issue was discovered in Mattermost Server before 4.7.0, 4.6.2, and 4.5.2. An attacker could authenticate to a different user's account via a crafted SAML response.
Vulnerability category: BypassGain privilege
Products affected by CVE-2018-21263
- cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
- cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
- cpe:2.3:a:mattermost:mattermost_server:4.7.0:rc1:*:*:*:*:*:*
- cpe:2.3:a:mattermost:mattermost_server:4.7.0:rc2:*:*:*:*:*:*
- cpe:2.3:a:mattermost:mattermost_server:4.7.0:rc3:*:*:*:*:*:*
- cpe:2.3:a:mattermost:mattermost_server:4.7.0:rc4:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-21263
0.34%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 54 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-21263
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.5
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:P/A:P |
8.0
|
6.4
|
NIST | |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2018-21263
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-21263
-
https://mattermost.com/security-updates/
Security Updates - Mattermost - Open Source, On-Prem or Private Cloud MessagingVendor Advisory
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