Use After Free in FreeBSD
CVE-2018-6916
In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p7, 10.4-STABLE, 10.4-RELEASE-p7, and 10.3-RELEASE-p28, the kernel does not properly validate IPsec packets coming from a trusted host. Additionally, a use-after-free vulnerability exists in the IPsec AH handling code. This issue could cause a system crash or other unpredictable results.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.021 (80.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 80.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
- FreeBSD — versions 10.3, All supported versions of FreeBSD, 10.4
Weakness classification (CWE)
References
- www.securitytracker.com/id/1040460 (VDB Entry, Third Party Advisory, vdb-entry)
- www.freebsd.org/security/advisories/FreeBSD-SA-18:01.ipsec.asc (vendor-advisory, Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2018-6916?
- CVE-2018-6916 is a critical-severity vulnerability in FreeBSD, classified under Use After Free. CVSS score: 9.8/10. Published 2018-03-09.
- How severe is CVE-2018-6916?
- Critical severity. CVSS v3 base score is 9.8 out of 10.