Vulnerability Details CVE-2018-6918
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.044
EPSS Ranking 88.4%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 7.8
References
- http://seclists.org/fulldisclosure/2019/Jun/6
- http://www.securityfocus.com/bid/103666
- http://www.securitytracker.com/id/1040628
- https://seclists.org/bugtraq/2019/May/77
- https://security.FreeBSD.org/advisories/FreeBSD-SA-18:05.ipsec.asc
- https://support.apple.com/kb/HT210090
- https://support.apple.com/kb/HT210091
- http://seclists.org/fulldisclosure/2019/Jun/6
- http://www.securityfocus.com/bid/103666
- http://www.securitytracker.com/id/1040628
- https://seclists.org/bugtraq/2019/May/77
- https://security.FreeBSD.org/advisories/FreeBSD-SA-18:05.ipsec.asc
- https://support.apple.com/kb/HT210090
- https://support.apple.com/kb/HT210091
Products affected by CVE-2018-6918
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cpe:2.3:o:freebsd:freebsd:10.0
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cpe:2.3:o:freebsd:freebsd:10.1
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cpe:2.3:o:freebsd:freebsd:10.2
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cpe:2.3:o:freebsd:freebsd:10.3
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cpe:2.3:o:freebsd:freebsd:11.0