Denial of service in FreeBSD

Published: 2018-08-15
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-6923
Exploitation vector Network
Public exploit N/A
Vulnerable software
Operating systems & Components / Operating system

Vendor FreeBSD Foundation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Resource exhaustion

EUVDB-ID: #VU14414

Risk: Medium


CVE-ID: CVE-2018-6923

CWE-ID: CWE-400 - Uncontrolled Resource Consumption ('Resource Exhaustion')

Exploit availability: No


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to an error when processing specially crafted input. A remote attacker can send a stream of specially crafted
fragments with a low packet rate, consume a large amount of CPU or all available mbuf clusters and cause the system to crash.


Install update from vendor's website.

Vulnerable software versions

FreeBSD: 5.3 - 11.1

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?