Improper input validation in OpenBSD
CVE-2018-14775
tss_alloc in sys/arch/i386/i386/gdt.c in OpenBSD 6.2 and 6.3 has a Local Denial of Service (system crash) due to incorrect I/O port access control on the i386 architecture.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (25.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- OpenBSD — versions 6.2, 6.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/arch/i386/i386/gdt.c.diff (Patch, Vendor Advisory)
- ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/015_ioport.patch.sig (Patch, Vendor Advisory)
- ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/020_ioport.patch.sig (Patch, Vendor Advisory)
- www.securitytracker.com/id/1041550 (VDB Entry, Third Party Advisory, vdb-entry)
- cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/arch/i386/i386/gdt.c (Patch, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2018-14775?
- CVE-2018-14775 is a medium-severity vulnerability in OpenBSD, classified under Improper Input Validation. CVSS score: 5.5/10. Published 2018-08-01.
- How severe is CVE-2018-14775?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2018-14775 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.