Integer overflow in Freebsd
CVE-2018-17158
In FreeBSD before 11.2-STABLE(r340854) and 11.2-RELEASE-p5, an integer overflow error can occur when handling the client address length field in an NFSv4 request. Unprivileged remote users with access to the NFS server can crash the system by sending a specially crafted NFSv4 request.
Vulnerability class: Integer Overflow
EPSS: 0.044 (90.3th 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-2018-17158?
- CVE-2018-17158 is a high-severity vulnerability in Freebsd, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2018-12-04.
- How severe is CVE-2018-17158?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2018-17158 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.