Information disclosure in FreeBSD
CVE-2018-6921
In FreeBSD before 11.1-STABLE(r332066) and 11.1-RELEASE-p10, due to insufficient initialization of memory copied to userland in the network subsystem, small amounts of kernel memory may be disclosed to userland processes. Unprivileged authenticated local users may be able to access small amounts of privileged kernel data.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (21.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: -0.000
Affected products
- FreeBSD — versions FreeBSD 11.x prior to 11.1-RELEASE-p10.
Weakness classification (CWE)
References
- security.FreeBSD.org/advisories/FreeBSD-EN-18:05.mem.asc (Vendor Advisory)
- www.securityfocus.com/bid/104118 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2018-6921?
- CVE-2018-6921 is a medium-severity vulnerability in FreeBSD, classified under Information Disclosure. CVSS score: 5.5/10. Published 2018-05-08.
- How severe is CVE-2018-6921?
- Medium severity. CVSS v3 base score is 5.5 out of 10.