CVE-2018-6923
In FreeBSD before 11.1-STABLE, 11.2-RELEASE-p2, 11.1-RELEASE-p13, ip fragment reassembly code is vulnerable to a denial of service due to excessive system resource consumption.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.01%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In FreeBSD before 11.1-STABLE, 11.2-RELEASE-p2, 11.1-RELEASE-p13, ip fragment reassembly code is vulnerable to a denial of service due to excessive system resource consumption. This issue can allow a remote attacker who is able to send an arbitrary ip fragments to cause the machine to consume excessive resources.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 4.01% probability · 90th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- freebsd/freebsd
- Source
- secteam@freebsd.org
EPSS 4.0% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/105336Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041505Third Party Advisory, VDB Entry
- https://www.freebsd.org/security/advisories/FreeBSD-SA-18:10.ip.ascMitigation, Vendor Advisory
- http://www.securityfocus.com/bid/105336Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041505Third Party Advisory, VDB Entry
- https://www.freebsd.org/security/advisories/FreeBSD-SA-18:10.ip.ascMitigation, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.