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CVE-2018-7540

Date: February 27, 2018

An issue was discovered in Xen through 4.10.x allowing x86 PV guest OS users to cause a denial of service (host OS CPU hang) via non-preemptable L3/L4 pagetable freeing.

Severity Score

6.5

Related Resources (13)

Url: https://lists.debian.org/debian-lts-announce/2018/03/msg00003.html

Url: http://www.securityfocus.com/bid/103174

Url: https://xenbits.xen.org/xsa/advisory-252.html

Url: https://www.debian.org/security/2018/dsa-4131

Url: http://www.securitytracker.com/id/1040773

Url: https://lists.debian.org/debian-lts-announce/2018/11/msg00013.html

Url: https://support.citrix.com/article/CTX232096

Url: https://access.redhat.com/security/cve/CVE-2018-7540

Url: https://nvd.nist.gov/vuln/detail/CVE-2018-7540

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2018-7540

Url: https://security.gentoo.org/glsa/201810-06

Url: https://support.citrix.com/article/CTX232655

Url: https://www.mend.io/vulnerability-database/CVE-2018-7540

Severity Score

6.5

Weakness Type (CWE)

Uncontrolled Resource Consumption ('Resource Exhaustion')

CWE-400

CVSS v3.1

Base Score:	6.5
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	LOW
Privileges Required (PR):	LOW
User Interaction (UI):	NONE
Scope (S):	CHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	HIGH

CVSS v2

Base Score:	4.9
Access Vector (AV):	LOCAL
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	COMPLETE
Additional information:

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