CVE-2018-14775: Input Validation
First published: Wed Aug 01 2018(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Openbsd Openbsd | =6.2 | |
| Openbsd Openbsd | =6.3 |
Remedy
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
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Reference Links
- http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/arch/i386/i386/gdt.c
- 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
- http://www.securitytracker.com/id/1041550
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/020_ioport.patch.sig
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/015_ioport.patch.sig
Frequently Asked Questions
What is the vulnerability ID for this OpenBSD vulnerability?
The vulnerability ID for this OpenBSD vulnerability is CVE-2018-14775.
What is the severity of CVE-2018-14775?
CVE-2018-14775 has a severity level of medium with a score of 5.5.
Which versions of OpenBSD are affected by CVE-2018-14775?
OpenBSD versions 6.2 and 6.3 are affected by CVE-2018-14775.
What is the root cause of CVE-2018-14775?
CVE-2018-14775 is caused by incorrect I/O port access control on the i386 architecture in OpenBSD 6.2 and 6.3.
How can CVE-2018-14775 be exploited?
CVE-2018-14775 can be exploited by a local attacker to cause a denial of service, resulting in a system crash.
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