Vulnerability Details : CVE-2018-14678
An issue was discovered in the Linux kernel through 4.17.11, as used in Xen through 4.11.x. The xen_failsafe_callback entry point in arch/x86/entry/entry_64.S does not properly maintain RBX, which allows local users to cause a denial of service (uninitialized memory usage and system crash). Within Xen, 64-bit x86 PV Linux guest OS users can trigger a guest OS crash or possibly gain privileges.
Vulnerability category: Denial of service
Products affected by CVE-2018-14678
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
- cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-14678
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-2018-14678
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.2
|
HIGH | AV:L/AC:L/Au:N/C:C/I:C/A:C |
3.9
|
10.0
|
NIST | |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2018-14678
-
The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-14678
-
https://xenbits.xen.org/xsa/advisory-274.html
XSA-274 - Xen Security AdvisoriesMitigation;Patch;Vendor Advisory
-
https://www.debian.org/security/2018/dsa-4308
Debian -- Security Information -- DSA-4308-1 linuxThird Party Advisory
-
https://usn.ubuntu.com/3931-1/
USN-3931-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html
[SECURITY] [DLA 1531-1] linux-4.9 security updateMailing List;Third Party Advisory
-
https://usn.ubuntu.com/3931-2/
USN-3931-2: Linux kernel (HWE) vulnerabilities | Ubuntu security noticesThird Party Advisory
-
http://www.securitytracker.com/id/1041397
Xen Failsafe Callback Initialization Error Lets Local Users on a Guest System Cause Denial of Service Conditions on the Guest System - SecurityTrackerThird Party Advisory;VDB Entry
-
http://www.securityfocus.com/bid/104924
Linux Kernel CVE-2018-14678 Local Denial of Service VulnerabilityThird Party Advisory;VDB Entry
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