Vulnerability Details : 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 category: Input validationDenial of service
Products affected by CVE-2018-14775
- cpe:2.3:o:openbsd:openbsd:6.3:*:*:*:*:*:*:*
- cpe:2.3:o:openbsd:openbsd:6.2:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-14775
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-14775
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.9
|
MEDIUM | AV:L/AC:L/Au:N/C:N/I:N/A:C |
3.9
|
6.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2018-14775
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-14775
-
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/arch/i386/i386/gdt.c
CVS log for src/sys/arch/i386/i386/gdt.cIssue Tracking;Patch;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
src/sys/arch/i386/i386/gdt.c - diff - 1.37.8.1Patch;Vendor Advisory
-
http://www.securitytracker.com/id/1041550
OpenBSD IO Port Permissions Bug Lets Local Users Cause Denial of Service Conditions - SecurityTrackerThird Party Advisory;VDB Entry
-
https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/015_ioport.patch.sig
Patch;Vendor Advisory
-
https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/020_ioport.patch.sig
Patch;Vendor Advisory
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