7.8

CVE-2018-6918: freebsd Infinite Loop

CVSS: 7.8v2.0HighModified
Published 04-04-2018Last modified 17-09-2024
Open JSON

Vulnerability summary

CVE-2018-6918 is a high (CVSS 7.8) Infinite Loop vulnerability in freebsd. EPSS estimates a 4.21% chance of exploitation in the next 30 days, higher than 90.9% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v2.0 (NVD)
EPSS score
4.21%
0%100%
Low · +0.26 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 04-04-2018
    PublishedVulnerability first disclosed.
  2. 17-09-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

4.21%

Chance of exploitation in the next 30 days

Percentile

91%

Versus all other CVEs

30-day change

+0.26 pp

From 3.94% on 21-09-2026

21-09-202621-10-2026
EPSS score
4.21%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Freebsd1 product
  • freebsdAll supported versions of FreeBSD. | ≥ 10.0, < 10.4 | ≥ 11.0, < 11.1

1 vendor · 1 product

References

7 links