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CVE-2018-7540Date: (C)2018-03-08   (M)2019-04-26


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.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 6.5CVSS Score : 4.9
Exploit Score: 2.0Exploit Score: 3.9
Impact Score: 4.0Impact Score: 6.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: LOCALAccess Vector: LOCAL
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: LOWAuthentication: NONE
User Interaction: NONEConfidentiality: NONE
Scope: CHANGEDIntegrity: NONE
Confidentiality: NONEAvailability: COMPLETE
Integrity: NONE 
Availability: HIGH 
  
Reference:
BID-103174
SECTRACK-1040773
DSA-4131
GLSA-201810-06
https://lists.debian.org/debian-lts-announce/2018/03/msg00003.html
https://lists.debian.org/debian-lts-announce/2018/11/msg00013.html
https://support.citrix.com/article/CTX232096
https://support.citrix.com/article/CTX232655
https://xenbits.xen.org/xsa/advisory-252.html

CPE    1
cpe:/o:debian:debian_linux:9.0
CWE    1
CWE-400
OVAL    17
oval:org.secpod.oval:def:1800948
oval:org.secpod.oval:def:114789
oval:org.secpod.oval:def:1800929
oval:org.secpod.oval:def:114329
...

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