Use After Free in FreeBSD
CVE-2017-1081
In FreeBSD before 11.0-STABLE, 11.0-RELEASE-p10, 10.3-STABLE, and 10.3-RELEASE-p19, ipfilter using "keep state" or "keep frags" options can cause a kernel panic when fed specially crafted packet fragments due to incorrect memory handling.
Vulnerability class: Use-After-Free
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: 0.027 (85.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.027 · change: +0.001
Affected products
- FreeBSD — versions 11.0, 10.3, prior to 11.0-RELEASE-p10 and 10.3-RELEASE-p19
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securitytracker.com/id/1038369 (VDB Entry, Third Party Advisory, vdb-entry)
- www.freebsd.org/security/advisories/FreeBSD-SA-17:04.ipfilter.asc (vendor-advisory, Vendor Advisory)
- www.securityfocus.com/bid/98089 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2017-1081?
- CVE-2017-1081 is a high-severity vulnerability in FreeBSD, classified under Use After Free. CVSS score: 7.5/10. Published 2018-04-10.
- How severe is CVE-2017-1081?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2017-1081 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.