Vulnerability in FreeBSD
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.042 (90.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.043 · newest: 0.042 · change: -0.001
Affected products
- FreeBSD — versions All supported versions of FreeBSD.
Weakness classification (CWE)
References
- www.securitytracker.com/id/1040628 (VDB Entry, Third Party Advisory, vdb-entry)
- security.FreeBSD.org/advisories/FreeBSD-SA-18:05.ipsec.asc (vendor-advisory, Vendor Advisory)
- www.securityfocus.com/bid/103666 (VDB Entry, Third Party Advisory, vdb-entry)
- support.apple.com/kb/HT210090
- seclists.org/bugtraq/2019/May/77 (mailing-list)
- seclists.org/fulldisclosure/2019/Jun/6 (mailing-list)
- support.apple.com/kb/HT210091
Frequently asked questions
- What is CVE-2018-6918?
- CVE-2018-6918 is a high-severity vulnerability in FreeBSD, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2018-04-04.
- How severe is CVE-2018-6918?
- High severity. CVSS v3 base score is 7.5 out of 10.