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CVE
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CVE-2017-12188Date: (C)2017-10-12   (M)2018-03-09


arch/x86/kvm/mmu.c in the Linux kernel through 4.13.5, when nested virtualisation is used, does not properly traverse guest pagetable entries to resolve a guest virtual address, which allows L1 guest OS users to execute arbitrary code on the host OS or cause a denial of service (incorrect index during page walking, and host OS crash), aka an "MMU potential stack buffer overrun."

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 7.8CVSS Score : 6.9
Exploit Score: 1.1Exploit Score: 3.4
Impact Score: 6.0Impact Score: 10.0
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: LOCALAccess Vector: LOCAL
Attack Complexity: HIGHAccess Complexity: MEDIUM
Privileges Required: LOWAuthentication: NONE
User Interaction: NONEConfidentiality: COMPLETE
Scope: CHANGEDIntegrity: COMPLETE
Confidentiality: HIGHAvailability: COMPLETE
Integrity: HIGH 
Availability: HIGH 
  
Reference:
BID-101267
https://bugzilla.redhat.com/show_bug.cgi?id=1500380
https://patchwork.kernel.org/patch/9996579/
https://patchwork.kernel.org/patch/9996587/

CWE    1
CWE-22
OVAL    8
oval:org.secpod.oval:def:703894
oval:org.secpod.oval:def:703897
oval:org.secpod.oval:def:703896
oval:org.secpod.oval:def:703898
...

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