Integer overflow in Freebsd
CVE-2018-6917
In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p9, 10.4-STABLE, 10.4-RELEASE-p8 and 10.3-RELEASE-p28, insufficient validation of user-provided font parameters can result in an integer overflow, leading to the use of arbitrary kernel memory as glyph data. Unprivileged users may be able to access privileged kernel data.
Vulnerability class: Integer Overflow
EPSS: 0.020 (79.1th 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:H/I:N/A:N.
Affected products
- Freebsd — versions All supported versions of FreeBSD.
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secteam@freebsd.org (x_refsource_FREEBSD, vendor-advisory, Vendor Advisory)
- secteam@freebsd.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- secteam@freebsd.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
Frequently asked questions
- What is CVE-2018-6917?
- CVE-2018-6917 is a high-severity vulnerability in Freebsd, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2018-04-04.
- How severe is CVE-2018-6917?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2018-6917 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.