Resource exhaustion in FreeBSD
CVE-2018-17159
In FreeBSD before 11.2-STABLE(r340854) and 11.2-RELEASE-p5, the NFS server lacks a bounds check in the READDIRPLUS NFS request. Unprivileged remote users with access to the NFS server can cause a resource exhaustion by forcing the server to allocate an arbitrarily large memory allocation.
Vulnerability class: DoS (Denial of Service)
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: 0.042 · newest: 0.042 · change: 0.000
Affected products
- FreeBSD — versions 11.2, FreeBSD 11.2 before 11.2-RELEASE-p5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/106192 (VDB Entry, Third Party Advisory, vdb-entry)
- security.freebsd.org/advisories/FreeBSD-SA-18:13.nfs.asc (vendor-advisory, Third Party Advisory)
- www.securitytracker.com/id/1042164 (VDB Entry, Third Party Advisory, vdb-entry)
- secuniaresearch.flexerasoftware.com/secunia_research/2018-24/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2018-17159?
- CVE-2018-17159 is a high-severity vulnerability in FreeBSD, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2018-12-04.
- How severe is CVE-2018-17159?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2018-17159 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.