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CVE-2018-19966

Good to know:

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Date: December 7, 2018

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because of an interpretation conflict for a union data structure associated with shadow paging. NOTE: this issue exists because of an incorrect fix for CVE-2017-15595.

Language: C

Severity Score

Related Resources (10)

https://xenbits.xen.org/xsa/advisory-280.html
https://www.debian.org/security/2019/dsa-4369
https://access.redhat.com/security/cve/CVE-2018-19966
https://lists.debian.org/debian-lts-announce/2019/10/msg00008.html
http://www.securityfocus.com/bid/106182
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/
https://nvd.nist.gov/vuln/detail/CVE-2018-19966
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2018-19966
https://www.mend.io/vulnerability-database/CVE-2018-19966

Severity Score

Weakness Type (CWE)

Interpretation Conflict

CWE-436

Permissions, Privileges, and Access Control

CWE-264

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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