Is CVE-2018-6918 in the CISA KEV catalog?

No. CVE-2018-6918 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-6918?

CVE-2018-6918 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2018-6918?

CVE-2018-6918 has an EPSS score of 4.38% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-6918?

Upgrade freebsd to 11.1 or later.

CVE & CISA-KEV Catalog

CVE-2018-6918

HIGHEPSS 90th pctl

7.5

CVSS v3

NVD

Description

In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p9, 10.4-STABLE, 10.4-RELEASE-p8 and 10.3-RELEASE-p28, the length field of the ipsec option header does not count the size of the option header itself, causing an infinite loop when the length is zero. This issue can allow a remote attacker who is able to send an arbitrary packet to cause the machine to crash.

CWE-835

How to fix

Remediation Available

freebsdNVD

Affected:>= 11.0, < 11.1Fixed in:11.1CVE-2018-6918derived 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 RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

4.38%probability of exploitation in 30 days

90thpercentile

High risk: more likely to be exploited than 90% of all known CVEs.

References

Vendor Advisory1

security.freebsd.org

Third-Party Advisory2

Other references4

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HTML

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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.