Denial of service in FreeBSD



Published: 2018-08-15
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-6923
CWE-ID CWE-400
Exploitation vector Network
Public exploit N/A
Vulnerable software
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FreeBSD
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

CVSSv3.1:

CVE-ID: CVE-2018-6923

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

Exploit availability: No

Description

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FreeBSD: 5.3 - 11.1


CPE2.3 External links

http://www.freebsd.org/security/advisories/FreeBSD-SA-18:10.ip.asc

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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