Vulnerability Details : CVE-2018-7542
An issue was discovered in Xen 4.8.x through 4.10.x allowing x86 PVH guest OS users to cause a denial of service (NULL pointer dereference and hypervisor crash) by leveraging the mishandling of configurations that lack a Local APIC.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2018-7542
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-7542
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 23 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-7542
| 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 | |
|
6.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
2.0
|
4.0
|
NIST |
CWE ids for CVE-2018-7542
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-7542
-
https://xenbits.xen.org/xsa/advisory-256.html
XSA-256 - Xen Security AdvisoriesVendor Advisory
-
https://security.gentoo.org/glsa/201810-06
Xen: Multiple vulnerabilities (GLSA 201810-06) — Gentoo security
-
https://www.debian.org/security/2018/dsa-4131
Debian -- Security Information -- DSA-4131-1 xenThird Party Advisory
-
http://www.securitytracker.com/id/1040776
Xen Local APIC Error Lets Local Users on a Guest System Cause Denial of Service Conditions on the Host System - SecurityTracker
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