PT-2018-12714 · Openbsd · Openbsd

Michal Necasek + 1 · Published 2018-08-01 · Updated 2018-10-03 · CVE-2018-14775

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions OpenBSD versions 6.2 through 6.3

Description The issue is related to incorrect I/O port access control on the i386 architecture, which can cause a Local Denial of Service (system crash) due to the tss alloc function in sys/arch/i386/i386/gdt.c.

Recommendations For OpenBSD versions 6.2 and 6.3, consider applying a patch or fix that corrects the I/O port access control issue in the tss alloc function to prevent system crashes.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2018-14775

Affected Products

Openbsd

References · 7

• https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/020_ioport.patch.sig · Vendor Advisory
• https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/015_ioport.patch.sig · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-14775 · Vendor Advisory
• http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/arch/i386/i386/gdt.c · Vendor Advisory
• http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/arch/i386/i386/gdt.c.diff?r1=1.37&r2=1.37.8.1&f=h · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-14775 · Security Note
• http://securitytracker.com/id/1041550 · Note