High severity · published Apr 4, 2018
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…
7.5
CVSS
4.2%
EPSS
No
On KEV
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 vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.2% · higher than 91% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
Freebsd · Freebsd
10.0 before 10.4; 11.0 before 11.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-6918
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-6918
seclists.org
http://seclists.org/fulldisclosure/2019/Jun/6
Third Party Advisory
http://www.securityfocus.com/bid/103666
Third Party Advisory
http://www.securitytracker.com/id/1040628
seclists.org
https://seclists.org/bugtraq/2019/May/77
Vendor Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-18:05.ipsec.asc
support.apple.com
https://support.apple.com/kb/HT210090
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