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)
EPSS: 0.042 (89.9th percentile) — read the EPSS interpretation.
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.
Affected products
- Freebsd — versions 11.2, FreeBSD 11.2 before 11.2-RELEASE-p5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secteam@freebsd.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- secteam@freebsd.org (x_refsource_FREEBSD, vendor-advisory, Third Party Advisory)
- secteam@freebsd.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
- secteam@freebsd.org (Third Party Advisory, x_refsource_MISC)
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.