Is CVE-2017-18894 in the CISA KEV catalog?

No. CVE-2017-18894 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-18894?

CVE-2017-18894 has a CVSS v3 base score of 8.1 (HIGH).

What is the EPSS score for CVE-2017-18894?

CVE-2017-18894 has an EPSS score of 0.82% (53th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-18894?

Upgrade mattermost server to 4.1.1 or later.

CVE & CISA-KEV Catalog

CVE-2017-18894

HIGH

8.1

CVSS v3

NVD

Description

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5, when used as an OAuth 2.0 service provider. Sometimes. resource-owner authorization is bypassed, allowing account takeover.

CWE-732Incorrect Permission Assignment for Critical Resource

How to fix

Remediation Available

mattermost serverNVD

Affected:>= 4.1.0, < 4.1.1Fixed in:4.1.1CVE-2017-18894derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Exploit Intelligence

0.82%probability of exploitation in 30 days

53rdpercentile

Moderate risk: more likely to be exploited than 53% of all known CVEs.

References

Vendor Advisory1

mattermost.com

Related Vulnerabilities

Other CWE-732 (Incorrect Permission Assignment for Critical Resource) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2011-3923	Critical	9.8	89%	-	Fix
CVE-2018-15379	Critical	9.8	86%	-	-
CVE-2018-1000207	High	7.2	64%	-	-
CVE-2023-32986	High	8.8	63%	-	-
CVE-2021-44521	Critical	9.1	55%	-	Fix
CVE-2018-13374	Medium	4.3	38%	KEV + Ransom	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.