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CVE
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CVE-2018-14678Date: (C)2018-08-03   (M)2024-03-26


An issue was discovered in the Linux kernel through 4.17.11, as used in Xen through 4.11.x. The xen_failsafe_callback entry point in arch/x86/entry/entry_64.S does not properly maintain RBX, which allows local users to cause a denial of service (uninitialized memory usage and system crash). Within Xen, 64-bit x86 PV Linux guest OS users can trigger a guest OS crash or possibly gain privileges.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 7.8CVSS Score : 7.2
Exploit Score: 1.8Exploit Score: 3.9
Impact Score: 5.9Impact Score: 10.0
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: LOCALAccess Vector: LOCAL
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: LOWAuthentication: NONE
User Interaction: NONEConfidentiality: COMPLETE
Scope: UNCHANGEDIntegrity: COMPLETE
Confidentiality: HIGHAvailability: COMPLETE
Integrity: HIGH 
Availability: HIGH 
  
Reference:
SECTRACK-1041397
BID-104924
DSA-4308
USN-3931-1
USN-3931-2
https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html
https://xenbits.xen.org/xsa/advisory-274.html

CWE    1
CWE-665
OVAL    22
oval:org.secpod.oval:def:114887
oval:org.secpod.oval:def:114886
oval:org.secpod.oval:def:114882
oval:org.secpod.oval:def:1502304
...

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